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China wholesaler Arrow Zn-BS70 Wear Resistance Twin Screw Extruder Machine Elements Kneading Block ball screw shaft manufacturer

Product Description

 

Overview 
Product Description

Screw elements are crucial components in twin screw extruders, playing a pivotal role in determining the quality and output of plastic products. These elements are responsible for various essential functions, including plastic molecular mixing, cutting, spreading, and facilitating reactions among the materials. To ensure exceptional production quality, our company has leveraged years of experience, incorporated valuable insights from international practices, and carefully considered customer requirements to develop a comprehensive range of processing screw elements

 

our meticulously designed screw elements offer a multitude of benefits, prominently featuring exceptional self-cleaning performance. This remarkable attribute guarantees the integrity of the entire production line. Furthermore, our screw elements boast a combination of superior characteristics, including optimum parameters, high self-cleaning efficiency, remarkable wear resistance, and outstanding corrosion resistance.

 

Through the thoughtful integration of our expertise and customer feedback, we have successfully created a refined selection of screw elements that not only meet but exceed industry standards. These elements ensure the highest quality and output for plastic products, empowering our clients to achieve superior results in their operations.

 

 
Screw for Plastic Extruder
1.All sizes of the screw are 38CrMnAlA Nitrided steel +Special Alloy Spraying Welding on the whole screw thread surface.
2. For twin screw barrel material: A. Integral barrel Standard Alloy spraying B. Two parts Bimetallic sleeve C. High Calcium filler abrasion resistant .
3. For single screw barrel: Main Barrel + feeding sleeve zone as basic structure with A type as standard, A: Integral barrel Standard Alloy spraying B:Two parts Bimetallic sleeve .

Basic Info. 

Place of Origin: ZheJiang , China  Brand Name: Arrow
Condition: New  Material: 40CrNiMoA
Weight (KG): 50 Spare Parts Type:
Barrel
Video outgoing-inspection:
Provided
Machinery Test Report:
Provided
Warranty:1 year Key Selling Points:
Sustainable
Applicable Industries:
Manufacturing Plant, Machinery Repair Shops
Item:
Bi-metal screw and barrel
Material for screw:
38CrMnAlA Nitrided steel
 
Material for barrel:
40CrNiMoA+SKDII with heat treatment
 
Screw finish:
Nitrogen-filled (0.50~0.70mm depth)
 
Core of the screw:
Auto control for temperature
 
Screw type:
Single/ Double
 
Rotate speed of screw:
0-48
Double screw type:
Conical/Parallel
 
Barrel design for double screw:
One body/two parts     
 

Application:

-For wear application:
 Tool Steel: W6Mo5Cr4V2
  PM-HIP material: WR5, WR13, WR14, CPM10V, CPM9V.
-For corrosion application:
  38CrMoAla
  PM-HIP material: WR4, WR13, WR14, CPM10V, CPM9V.
-For wear and corrosion application:
  PM-HIP material: WR13, WR14, CPM10V, CPM9V.
-Other materials:
  Stainless Steel:316L,440C etc.

Key Features:

  1. Tool steel, the steel has a high hardenability and thermal cracking resistance, the steel contains a higher content of tungsten, molybdenum,chromium and alum, good wear resistance, toughness is relatively weakened, with good heat resistance.
  2. High hardness,
  3. HRC up to 65.

Service

24-hour Hotline
 
No matter when and where you are,
call us and we can find our service to you.
 
 
Pre-sales Consultation
 
We have 5 sales people online, and whether you have any question can be solved through online communication,    and welcome to your consultation.
After-sales Services

you can receive products to our company and we will help
you deal with till you get satisfied with.

FAQ
 
How long does it take to get my products since I paid for them?
—According to your order, we will give you a reasonable delivery date.

How is your after-sale service?
—You will get our help in time as long as you find something wrong about our produces. Believe us, you deserve the best.
 
What machine does the product apply to?
—Twin Screw Extruder Machine.

Certification 
Exhibition 

Company Profile 
ZheJiang Arrow Machinery Co., Ltd.is a company specializing in R&D, production, sales, application promotion of food engineering projects. As 1 of the largest scaled food processing equipment &whole plant engineering problem solvers in China, machines served for more than 970 companies, export to 116 countries, area, more than 20 years engineering team, we recognize that quality equals value, aims to create a great future together with global customers.

After-sales Service: Online 24/7 Installation Guide
Warranty: 1 Year
Condition: New
Samples:
US$ 99999/Piece
1 Piece(Min.Order)

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Order Sample

Customization:
Available

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Customized Request

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Shipping Cost:

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about shipping cost and estimated delivery time.
Payment Method:







 

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Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

screwshaft

Types of Screw Shafts

Screw shafts come in various types and sizes. These types include fully threaded, Lead, and Acme screws. Let’s explore these types in more detail. What type of screw shaft do you need? Which one is the best choice for your project? Here are some tips to choose the right screw:

Machined screw shaft

The screw shaft is a basic piece of machinery, but it can be further customized depending on the needs of the customer. Its features include high-precision threads and ridges. Machined screw shafts are generally manufactured using high-precision CNC machines or lathes. The types of screw shafts available vary in shape, size, and material. Different materials are suitable for different applications. This article will provide you with some examples of different types of screw shafts.
Ball screws are used for a variety of applications, including mounting machines, liquid crystal devices, measuring devices, and food and medical equipment. Various shapes are available, including miniature ball screws and nut brackets. They are also available without keyway. These components form a high-accuracy feed mechanism. Machined screw shafts are also available with various types of threaded ends for ease of assembly. The screw shaft is an integral part of linear motion systems.
When you need a machined screw shaft, you need to know the size of the threads. For smaller machine screws, you will need a mating part. For smaller screw sizes, the numbers will be denominated as industry Numeric Sizes. These denominations are not metric, but rather in mm, and they may not have a threads-per-inch designation. Similarly, larger machine screws will usually have threads that have a higher pitch than those with a lower pitch.
Another important feature of machine screws is that they have a thread on the entire shaft, unlike their normal counterparts. These machine screws have finer threads and are intended to be screwed into existing tapped holes using a nut. This means that these screws are generally stronger than other fasteners. They are usually used to hold together electronic components, industrial equipment, and engines. In addition to this, machine screws are usually made of a variety of materials.

Acme screw

An Acme screw is the most common type of threaded shaft available. It is available in a variety of materials including stainless steel and carbon steel. In many applications, it is used for large plates in crushing processes. ACME screws are self-locking and are ideal for applications requiring high clamping force and low friction. They also feature a variety of standard thread forms, including knurling and rolled worms.
Acme screws are available in a wide range of sizes, from 1/8″ to 6″. The diameter is measured from the outside of the screw to the bottom of the thread. The pitch is equal to the lead in a single start screw. The lead is equal to the pitch plus the number of starts. A screw of either type has a standard pitch and a lead. Acme screws are manufactured to be accurate and durable. They are also widely available in a wide range of materials and can be customized to fit your needs.
Another type of Acme screw is the ball screw. These have no back drive and are widely used in many applications. Aside from being lightweight, they are also able to move at faster speeds. A ball screw is similar to an Acme screw, but has a different shape. A ball screw is usually longer than an Acme screw. The ball screw is used for applications that require high linear speeds. An Acme screw is a common choice for many industries.
There are many factors that affect the speed and resolution of linear motion systems. For example, the nut position and the distance the screw travels can all affect the resolution. The total length of travel, the speed, and the duty cycle are all important. The lead size will affect the maximum linear speed and force output. If the screw is long, the greater the lead size, the higher the resolution. If the lead length is short, this may not be the most efficient option.
screwshaft

Lead screw

A lead screw is a threaded mechanical device. A lead screw consists of a cylindrical shaft, which includes a shallow thread portion and a tightly wound spring wire. This spring wire forms smooth, hard-spaced thread convolutions and provides wear-resistant engagement with the nut member. The wire’s leading and trailing ends are anchored to the shaft by means appropriate to the shaft’s composition. The screw is preferably made of stainless steel.
When selecting a lead screw, one should first determine its critical speed. The critical speed is the maximum rotations per minute based on the natural frequency of the screw. Excessive backlash will damage the lead screw. The maximum number of revolutions per minute depends on the screw’s minor diameter, length, assembly alignment, and end fixity. Ideally, the critical speed is 80% of its evaluated critical speed. A critical speed is not exceeded because excessive backlash would damage the lead screw and may be detrimental to the screw’s performance.
The PV curve defines the safe operating limits of a lead screw. This relationship describes the inverse relationship between contact surface pressure and sliding velocity. As the PV value increases, a lower rotation speed is required for heavier axial loads. Moreover, PV is affected by material and lubrication conditions. Besides, end fixity, which refers to the way the lead screw is supported, also affects its critical speed. Fixed-fixed and free end fixity are both possible.
Lead screws are widely used in industries and everyday appliances. In fact, they are used in robotics, lifting equipment, and industrial machinery. High-precision lead screws are widely used in the fields of engraving, fluid handling, data storage, and rapid prototyping. Moreover, they are also used in 3D printing and rapid prototyping. Lastly, lead screws are used in a wide range of applications, from measuring to assembly.

Fully threaded screw

A fully threaded screw shaft can be found in many applications. Threading is an important feature of screw systems and components. Screws with threaded shafts are often used to fix pieces of machinery together. Having fully threaded screw shafts ensures that screws can be installed without removing the nut or shaft. There are two major types of screw threads: coarse and fine. When it comes to coarse threads, UTS is the most common type, followed by BSP.
In the 1840s, a British engineer named Joseph Whitworth created a design that was widely used for screw threads. This design later became the British Standard Whitworth. This standard was used for screw threads in the United States during the 1840s and 1860s. But as screw threads evolved and international standards were established, this system remained largely unaltered. A new design proposed in 1864 by William Sellers improved upon Whitworth’s screw threads and simplified the pitch and surface finish.
Another reason for using fully threaded screws is their ability to reduce heat. When screw shafts are partially threaded, the bone grows up to the screw shaft and causes the cavity to be too narrow to remove it. Consequently, the screw is not capable of backing out. Therefore, fully threaded screws are the preferred choice for inter-fragmentary compression in children’s fractures. However, surgeons should know the potential complication when removing metalwork.
The full thread depth of a fully threaded screw is the distance at which a male thread can freely thread into the shaft. This dimension is typically one millimeter shy of the total depth of the drilled hole. This provides space for tap lead and chips. The full-thread depth also makes fully threaded screws ideal for axially-loaded connections. It is also suitable for retrofitting applications. For example, fully threaded screws are commonly used to connect two elements.
screwshaft

Ball screw

The basic static load rating of a ball screw is determined by the product of the maximum axial static load and the safety factor “s0”. This factor is determined by past experience in similar applications and should be selected according to the design requirements of the application. The basic static load rating is a good guideline for selecting a ball screw. There are several advantages to using a ball screw for a particular application. The following are some of the most common factors to consider when selecting a ball screw.
The critical speed limit of a ball screw is dependent on several factors. First of all, the critical speed depends on the mass, length and diameter of the shaft. Second, the deflection of the shaft and the type of end bearings determine the critical speed. Finally, the unsupported length is determined by the distance between the ball nut and end screw, which is also the distance between bearings. Generally, a ball screw with a diameter greater than 1.2 mm has a critical speed limit of 200 rpm.
The first step in manufacturing a high-quality ball screw is the choice of the right steel. While the steel used for manufacturing a ball screw has many advantages, its inherent quality is often compromised by microscopic inclusions. These microscopic inclusions may eventually lead to crack propagation, surface fatigue, and other problems. Fortunately, the technology used in steel production has advanced, making it possible to reduce the inclusion size to a minimum. However, higher-quality steels can be expensive. The best material for a ball screw is vacuum-degassed pure alloy steel.
The lead of a ball screw shaft is also an important factor to consider. The lead is the linear distance between the ball and the screw shaft. The lead can increase the amount of space between the balls and the screws. In turn, the lead increases the speed of a screw. If the lead of a ball screw is increased, it may increase its accuracy. If not, the lead of a ball screw can be improved through preloading, lubrication, and better mounting accuracy.

China wholesaler Arrow Zn-BS70 Wear Resistance Twin Screw Extruder Machine Elements Kneading Block   ball screw shaft manufacturerChina wholesaler Arrow Zn-BS70 Wear Resistance Twin Screw Extruder Machine Elements Kneading Block   ball screw shaft manufacturer
editor by CX 2023-11-24

China wholesaler Brand New Domestic Famous Ball Screw Ck6130 CNC Machine Lathe screw conveyor end shaft seal

Product Description

CK6130 CNC Lathe Machine

 

Product Application:

This machine is widely used in processing the electrical appliance, instrumentation, automobile, motorcycle, fastener, bearing,photographic and film machinery, hardware tools, watches, glasses, stationery motors, valves, gas pipe and other high precise and complex components. It is the ideal high efficient equipment in hardware machinery industry.

Product Feature:

1. This series lathe has compact structure, pleasant appearance, large spindle torque, high rigidity, stable and reliable performance, and excellent accuracy retention.

2. Bedstock optimization design is suitable for turning disc and shaft parts. It can process straight line, arc, metric and British threads and multi-head threads. It can also be used for turning disc and shaft parts with complex shape and high precision.

3. The lathe guideway and saddle guideway adopt the hard guideway of special material. After high frequency quenching, they are super hard and wear-resistant, durable and have good processing accuracy.

4. Use domestic famous ball screw and high precision screw bearing.

 

 

ACR machine tool product series:
Slant bed CNC lathes | linear rail flat bed CNC lathes | 1 piece casting bed box way CNC lathes | vertical machining center

 

 

 

 

Specifications Units CK6130
Max.swing over bed mm 300
Max. swing over cross slide mm 100
Max. processing length mm chuck 200/collet 320
X/Z axis travel mm 300/350
Spindle nose   A2-5
Spindle bore mm 48
Bar capacity mm 40
Max.Spindle speed rpm 2500
Chuck size mm 160
Spindle motor kw 4
X/Z axis repeate positionsing accuracy mm ±0.005
X/Z axis feed motor torque N.m X:4 ; Z:4
X/Z axis rapid feed speed mm/min X:8 ; Z:10
Tailstock sleeve diameter mm 52
Tailstock sleeve travel mm 90
Tailstock taper # MT4
Tool post type   4 position electric tool post
Cutting tool shape size mm 16*16
Machine dimension(L*W*H) mm 1600*1100*1650
Net weight Kg 1250

 
Technical parameters:

 

Machine tool structure characteristics and functional requirements

1.1 This series of machine tools is the company’s main export mature product. The whole machine has a compact structure, beautiful appearance, large spindle torque, high rigidity, stable and reliable performance, and excellent accuracy retention.

1.2 Optimized design of the headstock, suitable for turning of disc and shaft parts. It can process straight, arc, metric and inch threads, and multi-threaded. It is suitable for turning discs and shafts with complex shapes and high precision requirements. Parts Processing.
1.3 Both the machine tool CZPT rail and the sliding saddle CZPT rail adopt hard CZPT rails made of special materials. After high frequency quenching, they are super hard and wear-resistant, durable, and have good machining accuracy retention.
1.4 CNC system adopts FANUC system, domestic famous ball screw and high-precision screw bearing.
1.5 The spindle adopts high-precision spindle bearing set and has been precisely assembled and dynamically balanced to ensure that the spindle has high precision, low noise and strong rigidity.
1.6 Each lubrication point adopts a forced automatic lubrication device for fixed-point and quantitative lubrication of the lead screw and CZPT rail. When there is an abnormal state or the amount of oil is insufficient, a warning signal is automatically generated.
1.7 Standard configuration adopts domestically made three-jaw self-centering manual chuck.
1.8 The CZPT rail is equipped with a scraping device to prevent the CZPT rail from being corroded by iron filings and coolant, and to facilitate the cleaning of the iron filings.

Main technical parameters, configuration table

Project Unit CK6130
Maximum turning diameter of bed mm Φ300
X-direction rail span mm 160
Z-direction rail span mm 230
Maximum turning diameter of slide mm Φ100
Center distance mm 350
Maximum turning length mm 230
Center height From bed mm 150
Off the ground mm 1065
Spindle hole diameter mm Φ48
Bar diameter mm Φ45
With hollow chuck rod through hole mm Φ40
Spindle end type   A2-5
Chuck mm 160
Spindle speed limit rpm 2500
Diameter of tailstock sleeve mm Φ52
Taper of inner hole of tailstock sleeve No MT4#
Tailstock sleeve stroke mm 80
Tailstock   Manual
Electric tool rest set 4
Knife square size mm 20×20
Lead screw X mm FDC2506-P3
Z mm FDC3210-P3
X/Z direction rapid traverse speed m/min 6/10
X stroke mm 280
Minimum setting unit mm 0.001
main motor power KW 4
Machine Net Weight Kg 1700
Dimensions (length×width×height) mm 2200×1160×1620

 

Technical parameter Unit CK0640
Maximum turning diameter of bed  mm Φ230
The maximum turning diameter of the pallet mm Φ100
Z/X maximum travel  mm 260/220
Spindle through hole diameter  mm Φ48
Through hole diameter of draw tube  mm Φ41
Workpiece clamping method   Pneumatic clamping
Z/X axis servo motor N.M 4/4
Z/X axis rapid traverse speed  m/min 6/7
Spindle maximum speed  rpm 2800
Tool holder size mm 20*20
Tool holder repeatability mm ≤0.005
Frequency converter kw 5.5
main motor power kw 4
Tool holder method   row of knives
Machine weight kg 1500
Machine size  mm 1610*1180*1600

 Machine accuracy

Test items Standard tolerance(mm)
Periodic axial movement of the spindle 0.005
Radial runout of the positioning cone of the spindle chuck 0.005
Position accuracy ±0.005
Diameter consistency 0.01/150
Flatness 0.571/φ300
Thread pitch product error 0.571/100
Surface roughness Ra1.6μm

Main configuration list

Name Specification model Quantity
Control System FANUC 1
Spindle structure Stepless speed regulation 1
Screw bearing Flange bearing 1
Spindle motor 4 KW 1
Ball screw 2506/3210 1
Tool holder Four-station electric tool post 1
Automatic lubrication device RBCLB-2BZK 1
Three-jaw manual chuck K11160 1
Cooling pump P=90W 1

Packing:

 

 

 

 

 

Shipments:

 

 

 

 

 

Company introduction:

 

 

 

ZheJiang ACR Machine Tool Co., Ltd. is an enterprise integrating product design, research and development, manufacturing and sales. Mainly produce and operate CNC lathes, CNC milling machines, vertical machining centers, horizontal machining centers, gantry machining centers, ordinary lathes, vertical drilling machines, radial drilling machines, ordinary milling machines, metal band saws, planers, surface grinders, etc. More than 50 series of products.
ACR is committed to the innovation of machining technology and solutions, and has become a domestic high-quality supplier of CNC lathes, vertical machining centers, horizontal machining centers, drilling centers, CNC gantry milling and boring machines and other products for just a few years. It was rated as “national high-tech enterprise”, “ZheJiang science and technology small and medium-sized enterprise”. The company has passed the “ISO90001 international quality system”, “ISO14001 environmental quality system certification”, the enterprise credit rating is “AAA”.
ACR has introduced and implemented the CE system and the on-site 5S management mode for a long time. We do a meticulous job in each link,and strictly manage each production process.We have won many national and provincial awards. ACR brand CNC lathes, machining centers, CNC gantry milling and boring machines, drilling centers, etc. have been awarded the titles of “national machinery industry high-quality brand products” and ZheJiang Province famous brand products. Adhering to the concept of “creation and innovation, common prosperity and sharing”, ACR has always pursued the goal of first-class enterprise, first-class product, first-class service and first-class benefit”, strive to “create greater value” for our customers, and strive to build a CNC machine tool industry chain group company.

FAQ:

1:How can I choose the most suitable machines ?
A: Please tell me your specifications ,we can choose the best model for you , or you can choose the exact model .
You can also send us the products drawing ,we will choose the most suitable machines for you .

2: What’s your main products of your company?
A: We specialized in all kinds of machines ,such as CNC Lathe Machine ,CNC Milling Machine ,Vertical Machining Center ,Lathe
Machines ,Drilling Machine ,Radial Drilling Machine ,Sawing Machine ,Shaper machine and so on .

3: Where is our factory located? How can I visit there?
A : Our factory is located in HangZhou City ,ZheJiang Province,277500 China. You are warmly welcomed to visit us.

4. What is your trade terms?
A : FOB, CFR and CIF all acceptable.

5: What’s the Payment Terms ?
A : T/T ,30% initial payment when order ,70% balance payment before shipment ;
Irrevocable LC at sight .

5: What’s the MOQ?
A: 1 set .(Only some low cost machines will be more than 1 set )

After-sales Service: Three Packs of Service
Warranty: 1year
Application: Metal
Process Usage: Metal-Cutting CNC Machine Tools, CNC Non-Conventional Machine Tools, Metal-Forming CNC Machine Tools
Movement Method: Contour Control
Control Method: Closed-Loop Control
Customization:
Available

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Customized Request

screwshaft

What Are Screw Shaft Threads?

A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.

Coefficient of friction between the mating surfaces of a nut and a screw shaft

There are two types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The two types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.

Helix angle

In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are two types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in two stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to six times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.
screwshaft

Thread angle

The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are two different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.

Material

Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each one is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.
screwshaft

Self-locking features

Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the two materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.

China wholesaler Brand New Domestic Famous Ball Screw Ck6130 CNC Machine Lathe   screw conveyor end shaft sealChina wholesaler Brand New Domestic Famous Ball Screw Ck6130 CNC Machine Lathe   screw conveyor end shaft seal
editor by CX 2023-11-22

China Shenzhen Custom Manufactured CNC Metal Clean Machined Stainless Steel Alloy Single Screw Pump Stator, Rotor Coupling Rod, Drive Shaft wholesaler

Product Description

HangZhou Custom manufactured CNC metal clean machined stainless steel alloy single Screw pump Stator, Rotor Coupling Rod, Drive shaft

 

 

Click here and specify your inquiry, contact us to get an online quote now!

How to get a quote?

 

1. First: Email us and offer your 3D drawing/2D drawing to us to quote.
2. Second: Let us know the required material, surface finish and special tolerance requirements, quantity information, we’ll arrange for our engineer to review your drawings and quote soon!

 

Note: Workable 3D Drawing Formats: STEP/IGS/X_T/STL/SOLIDWORKS etc, 2D Drawing with PDF will do.

Project Support: Free Sample Offered Before Production starts
 

Examples projects

What we can offer

 

Advantages »Free sample offered before production
»Good machining quality and warm service
»Reasonable Pricing and outstanding quality provided
»Competitive shipping cost service with discount sometimes
»MOQ 1PCS and small quantity order accepted, mass production supported
»Professional engineering service when any modification required
»Any turnkey assembly or customized package requirements, we’ll meet your demands!
Equipment

»20 sets of CNC turning machines;

»30 sets of the most technologically advanced machining CNC milling machines;

»25 sets of Multi-Spindle Japan Precision Swiss CNC lathes

RFQ Customer Inquiry →Engineering Communication →Cost Analysis →Sales Analysis →Quote to Customer
» 1-3 Work Days Only
» Submit RFQ with complete commercial terms
Sample Making Sample Order → Engineering Review → Sample Plan to Customer → Sample Status Tracking → Submit Samples with Doc.
» Sample L/T: 1 week
» Continuous Sample Status Tracking
» Complete Documents for sample approval
Order Management CRM System → Open Order Confirm → Logistic Arrangement.
» Production L/T: 2-4 wks
» Weekly Open Order Confirm
» Preferred 3PL Service to Customers
Quality Control Certificates: RoHS, ISO9001:2008, SGS.
IQC → IPQC → OQC/FQC → Quality Complain Feedback → Audit & Training.
» Plant Audit and Qualified by world famous company
» Strict Quality Management Procedure with Traceability
Application »Aerospace
»Automotive
»Lighting fittings
»Motorbike
»PhotoGear
»EDC Tools
» Marine
»Office equipment
»Home appliance
»Medical equipment
»Telecommunication
»Electrical & Electronics
»Fire detection system, etc.

Production information

1). Material Capabilities: Following GB, DIN, and ISO and applying good quality homemade and import materials, we have already provided single/assembly products for international customers mainly from the USA and Europe, etc.

Stainless Steel SS201, SS301, SS303, SS304, SS316, SS416 etc.
Steel Mild steel, Carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.
Brass HPb63, HPb62, HPb61, HPb59, H59, H62, H68, H80 etc.
Copper C11000, C12000, C12000 C36000 etc.
Aluminum AL6061, Al6063, AL6082, AL7075, AL5052, A380 etc.
Iron A36, 45#, 1213, 12L14, 1215 etc.
Plastic ABS, PC, PE, POM, Delrin, Nylon, PP, PEI, Peek etc.

 

2). Quality control:
*We have specialized QC testers to check the quality of the products according to different customers’ requirements. Usually, it’s a random inspection, and we also offer 100% inspection at a reasonable price if required.
*We have IQC to check the dimensions and surface of the incoming material
*We have PQC to inspect full-course during the manufacturing processing
*We have FQC to inspect all the anodizing/plating and other finishes’ products from our supplier and proceed with the professional quality and appearance inspection before shipping.

3).Surface Finish: sandblasted/normal and hard anodized finish/polish/coating/polish/passivation/plating/brush/heat treatment/fine glass beads/grounding/tumbled finish , etc. More detailed information for different material parts is below,

Aluminum parts

Brushing
Polishing
Clear Anodized
Color Anodized
Sandblast Anodized
Chemical Film
Stainless Steel parts Polishing
Passivated
Sandblasting
Plating
Steel Parts Zinc plating
Oxide Black
Nickel plating
Chrome plating
Carburized
Heat treatment
Powder Coated
Plastic Parts Chrome plating
Polishing

4). Payment terms: T/T payment. The Sample order is paid by full payment; Mass production with order amount exceeding can be paid a 50% deposit before production, and balance paid before shipping.

5). Production schedule: Usually, it takes 5~10 working days for sample production; 15~20 working days for mass production days, it depends on your design, simple parts can be produced quickly, the complicated design parts would take us more machining time.

6). Machining capability: 30 sets of the most technologically advanced machining CNC milling machines, 20 sets of CNC turning machines, 25 sets of Multi-Spindle Japan Precision Swiss CNC lathes, and 4 sets of 2D &3D CMM (image measuring instrument) quality control equipment 3 QC staff, enabling CNC Manufacturing to deliver precise parts within the tightest of tolerances, ensuring the highest quality results to meet different
customers’ requirements.

7). Tolerance: +/- 0.02mm (for Metal shaft), +/-0.03mm ( for plastic), for special tolerance requirements, please point them out in the email, we will Check if it’s feasible to make it after studying it.

8). Packing & Shipping way:

1. Packing Detail: Each product is packed with plastic preservative, EPE, foam plastic bag, Carton outside, wood case or iron case or as per the customer’s special requirement. Besides, the custom package takes a week to prepare in advance.

2. Delivery Detail: the fast International Shipping time takes 3 ~5 working days by DHL/UPS/FedEx, slow shipping time takes 7~ 8 working days by DHL/UPS/FedEx/TNT, etc.

3. Shipping options:
1) 0-100kg: express&air freight priority,
2) >100kg: sea freight priority,
3) As per customized specifications

About us

Full-service precision CNC machining services for prototypes and short and low to high production runs. Capabilities are CNC milled and turned metal parts and assemblies. Materials worked with include aluminum, brass, copper, stainless, steel, iron, other precious metals, and other plastic materials. Lead times are 2 to 3 weeks for prototypes and 4 to 6 weeks for production runs. Emergency and rush services are available. Industries served include aircraft and aerospace, consumer electronics, automotive, machinery fittings, audio equipment, EDC tools, computer, and Secondary processes such as anodizing, sandblasting, blackening, grinding, honing, heat treating, powder coating, passivation, polishing, plating, and brushing are also provided.

We put high attention and effort into all of the work that we do. Every part that comes off our machines is an extension of us. We take great pride in bringing machining CZPT to our customers. The amazing quality parts we machined here will be your best choice to find a supplier!

 

Customer’s comment


Want to know more about us? Email us now!

 

 

 

 

After-sales Service: Email Us Anytime If Any Problems
Warranty: Email Us Anytime If Any Requirements
Condition: New
Certification: CE, RoHS, GS, ISO9001
Standard: DIN, Custom Metal Parts & Free Sample Offered
Customized: Customized

###

Samples:
US$ 0/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Advantages »Free sample offered before production
»Good machining quality and warm service
»Reasonable Pricing and outstanding quality provided
»Competitive shipping cost service with discount sometimes
»MOQ 1PCS and small quantity order accepted, mass production supported
»Professional engineering service when any modification required

»Any turnkey assembly or customized package requirements, we’ll meet your demands!
Equipment

»20 sets of CNC turning machines;

»30 sets of the most technologically advanced machining CNC milling machines;

»25 sets of Multi-Spindle Japan Precision Swiss CNC lathes

RFQ Customer Inquiry →Engineering Communication →Cost Analysis →Sales Analysis →Quote to Customer
» 1-3 Work Days Only
» Submit RFQ with complete commercial terms
Sample Making Sample Order → Engineering Review → Sample Plan to Customer → Sample Status Tracking → Submit Samples with Doc.
» Sample L/T: 1 week
» Continuous Sample Status Tracking
» Complete Documents for sample approval
Order Management CRM System → Open Order Confirm → Logistic Arrangement.
» Production L/T: 2-4 wks
» Weekly Open Order Confirm
» Preferred 3PL Service to Customers
Quality Control Certificates: RoHS, ISO9001:2008, SGS.
IQC → IPQC → OQC/FQC → Quality Complain Feedback → Audit & Training.
» Plant Audit and Qualified by world famous company
» Strict Quality Management Procedure with Traceability
Application »Aerospace
»Automotive
»Lighting fittings
»Motorbike
»PhotoGear
»EDC Tools
» Marine
»Office equipment
»Home appliance
»Medical equipment
»Telecommunication
»Electrical & Electronics
»Fire detection system, etc.

###

Stainless Steel SS201, SS301, SS303, SS304, SS316, SS416 etc.
Steel Mild steel, Carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.
Brass HPb63, HPb62, HPb61, HPb59, H59, H62, H68, H80 etc.
Copper C11000, C12000, C12000 C36000 etc.
Aluminum AL6061, Al6063, AL6082, AL7075, AL5052, A380 etc.
Iron A36, 45#, 1213, 12L14, 1215 etc.
Plastic ABS, PC, PE, POM, Delrin, Nylon, PP, PEI, Peek etc.

###

Aluminum parts

Brushing
Polishing
Clear Anodized
Color Anodized
Sandblast Anodized
Chemical Film
Stainless Steel parts Polishing
Passivated
Sandblasting
Plating
Steel Parts Zinc plating
Oxide Black
Nickel plating
Chrome plating
Carburized
Heat treatment
Powder Coated
Plastic Parts Chrome plating
Polishing
After-sales Service: Email Us Anytime If Any Problems
Warranty: Email Us Anytime If Any Requirements
Condition: New
Certification: CE, RoHS, GS, ISO9001
Standard: DIN, Custom Metal Parts & Free Sample Offered
Customized: Customized

###

Samples:
US$ 0/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Advantages »Free sample offered before production
»Good machining quality and warm service
»Reasonable Pricing and outstanding quality provided
»Competitive shipping cost service with discount sometimes
»MOQ 1PCS and small quantity order accepted, mass production supported
»Professional engineering service when any modification required

»Any turnkey assembly or customized package requirements, we’ll meet your demands!
Equipment

»20 sets of CNC turning machines;

»30 sets of the most technologically advanced machining CNC milling machines;

»25 sets of Multi-Spindle Japan Precision Swiss CNC lathes

RFQ Customer Inquiry →Engineering Communication →Cost Analysis →Sales Analysis →Quote to Customer
» 1-3 Work Days Only
» Submit RFQ with complete commercial terms
Sample Making Sample Order → Engineering Review → Sample Plan to Customer → Sample Status Tracking → Submit Samples with Doc.
» Sample L/T: 1 week
» Continuous Sample Status Tracking
» Complete Documents for sample approval
Order Management CRM System → Open Order Confirm → Logistic Arrangement.
» Production L/T: 2-4 wks
» Weekly Open Order Confirm
» Preferred 3PL Service to Customers
Quality Control Certificates: RoHS, ISO9001:2008, SGS.
IQC → IPQC → OQC/FQC → Quality Complain Feedback → Audit & Training.
» Plant Audit and Qualified by world famous company
» Strict Quality Management Procedure with Traceability
Application »Aerospace
»Automotive
»Lighting fittings
»Motorbike
»PhotoGear
»EDC Tools
» Marine
»Office equipment
»Home appliance
»Medical equipment
»Telecommunication
»Electrical & Electronics
»Fire detection system, etc.

###

Stainless Steel SS201, SS301, SS303, SS304, SS316, SS416 etc.
Steel Mild steel, Carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.
Brass HPb63, HPb62, HPb61, HPb59, H59, H62, H68, H80 etc.
Copper C11000, C12000, C12000 C36000 etc.
Aluminum AL6061, Al6063, AL6082, AL7075, AL5052, A380 etc.
Iron A36, 45#, 1213, 12L14, 1215 etc.
Plastic ABS, PC, PE, POM, Delrin, Nylon, PP, PEI, Peek etc.

###

Aluminum parts

Brushing
Polishing
Clear Anodized
Color Anodized
Sandblast Anodized
Chemical Film
Stainless Steel parts Polishing
Passivated
Sandblasting
Plating
Steel Parts Zinc plating
Oxide Black
Nickel plating
Chrome plating
Carburized
Heat treatment
Powder Coated
Plastic Parts Chrome plating
Polishing

Screws and Screw Shafts

A screw is a mechanical device that holds objects together. Screws are usually forged or machined. They are also used in screw jacks and press-fitted vises. Their self-locking properties make them a popular choice in many different industries. Here are some of the benefits of screws and how they work. Also read about their self-locking properties. The following information will help you choose the right screw for your application.

Machined screw shaft

A machined screw shaft can be made of various materials, depending on the application. Screw shafts can be made from stainless steel, brass, bronze, titanium, or iron. Most manufacturers use high-precision CNC machines or lathes to manufacture these products. These products come in many sizes and shapes, and they have varying applications. Different materials are used for different sizes and shapes. Here are some examples of what you can use these screws for:
Screws are widely used in many applications. One of the most common uses is in holding objects together. This type of fastener is used in screw jacks, vises, and screw presses. The thread pitch of a screw can vary. Generally, a smaller pitch results in greater mechanical advantage. Hence, a machined screw shaft should be sized appropriately. This ensures that your product will last for a long time.
A machined screw shaft should be compatible with various threading systems. In general, the ASME system is used for threaded parts. The threaded hole occupies most of the shaft. The thread of the bolt occupy either part of the shaft, or the entire one. There are also alternatives to bolts, including riveting, rolling pins, and pinned shafts. These alternatives are not widely used today, but they are useful for certain niche applications.
If you are using a ball screw, you can choose to anneal the screw shaft. To anneal the screw shaft, use a water-soaked rag as a heat barrier. You can choose from two different options, depending on your application. One option is to cover the screw shaft with a dust-proof enclosure. Alternatively, you can install a protective heat barrier over the screw shaft. You can also choose to cover the screw shaft with a dust-proof machine.
If you need a smaller size, you can choose a smaller screw. It may be smaller than a quarter of an inch, but it may still be compatible with another part. The smaller ones, however, will often have a corresponding mating part. These parts are typically denominated by their ANSI numerical size designation, which does not indicate threads-per-inch. There is an industry standard for screw sizes that is a little easier to understand.
screwshaft

Ball screw nut

When choosing a Ball screw nut for a screw shaft, it is important to consider the critical speed of the machine. This value excites the natural frequency of a screw and determines how fast it can be turned. In other words, it varies with the screw diameter and unsupported length. It also depends on the screw shaft’s diameter and end fixity. Depending on the application, the nut can be run at a maximum speed of about 80% of its theoretical critical speed.
The inner return of a ball nut is a cross-over deflector that forces the balls to climb over the crest of the screw. In one revolution of the screw, a ball will cross over the nut crest to return to the screw. Similarly, the outer circuit is a circular shape. Both flanges have one contact point on the ball shaft, and the nut is connected to the screw shaft by a screw.
The accuracy of ball screws depends on several factors, including the manufacturing precision of the ball grooves, the compactness of the assembly, and the set-up precision of the nut. Depending on the application, the lead accuracy of a ball screw nut may vary significantly. To improve lead accuracy, preloading, and lubrication are important. Ewellix ball screw assembly specialists can help you determine the best option for your application.
A ball screw nut should be preloaded prior to installation in order to achieve the expected service life. The smallest amount of preload required can reduce a ball screw’s calculated life by as much as 90 percent. Using a lubricant of a standard grade is recommended. Some lubricants contain additives. Using grease or oil in place of oil can prolong the life of the screw.
A ball screw nut is a type of threaded nut that is used in a number of different applications. It works similar to a ball bearing in that it contains hardened steel balls that move along a series of inclined races. When choosing a ball screw nut, engineers should consider the following factors: speed, life span, mounting, and lubrication. In addition, there are other considerations, such as the environment in which the screw is used.
screwshaft

Self-locking property of screw shaft

A self-locking screw is one that is capable of rotating without the use of a lock washer or bolt. This property is dependent on a number of factors, but one of them is the pitch angle of the thread. A screw with a small pitch angle is less likely to self-lock, while a large pitch angle is more likely to spontaneously rotate. The limiting angle of a self-locking thread can be calculated by calculating the torque Mkdw at which the screw is first released.
The pitch angle of the screw’s threads and its coefficient of friction determine the self-locking function of the screw. Other factors that affect its self-locking function include environmental conditions, high or low temperature, and vibration. Self-locking screws are often used in single-line applications and are limited by the size of their pitch. Therefore, the self-locking property of the screw shaft depends on the specific application.
The self-locking feature of a screw is an important factor. If a screw is not in a state of motion, it can be a dangerous or unusable machine. The self-locking property of a screw is critical in many applications, from corkscrews to threaded pipe joints. Screws are also used as power linkages, although their use is rarely necessary for high-power operations. In the archimedes’ screw, for example, the blades of the screw rotate around an axis. A screw conveyor uses a rotating helical chamber to move materials. A micrometer uses a precision-calibrated screw to measure length.
Self-locking screws are commonly used in lead screw technology. Their pitch and coefficient of friction are important factors in determining the self-locking property of screws. This property is advantageous in many applications because it eliminates the need for a costly brake. Its self-locking property means that the screw will be secure without requiring a special kind of force or torque. There are many other factors that contribute to the self-locking property of a screw, but this is the most common factor.
Screws with right-hand threads have threads that angle up to the right. The opposite is true for left-hand screws. While turning a screw counter-clockwise will loosen it, a right-handed person will use a right-handed thumb-up to turn it. Similarly, a left-handed person will use their thumb to turn a screw counter-clockwise. And vice versa.
screwshaft

Materials used to manufacture screw shaft

Many materials are commonly used to manufacture screw shafts. The most common are steel, stainless steel, brass, bronze, and titanium. These materials have advantages and disadvantages that make them good candidates for screw production. Some screw types are also made of copper to fight corrosion and ensure durability over time. Other materials include nylon, Teflon, and aluminum. Brass screws are lightweight and have aesthetic appeal. The choice of material for a screw shaft depends on the use it will be made for.
Shafts are typically produced using three steps. Screws are manufactured from large coils, wire, or round bar stock. After these are produced, the blanks are cut to the appropriate length and cold headed. This cold working process pressudes features into the screw head. More complicated screw shapes may require two heading processes to achieve the desired shape. The process is very precise and accurate, so it is an ideal choice for screw manufacturing.
The type of material used to manufacture a screw shaft is crucial for the function it will serve. The type of material chosen will depend on where the screw is being used. If the screw is for an indoor project, you can opt for a cheaper, low-tech screw. But if the screw is for an outdoor project, you’ll need to use a specific type of screw. This is because outdoor screws will be exposed to humidity and temperature changes. Some screws may even be coated with a protective coating to protect them from the elements.
Screws can also be self-threading and self-tapping. The self-threading or self-tapping screw creates a complementary helix within the material. Other screws are made with a thread which cuts into the material it fastens. Other types of screws create a helical groove on softer material to provide compression. The most common uses of a screw include holding two components together.
There are many types of bolts available. Some are more expensive than others, but they are generally more resistant to corrosion. They can also be made from stainless steel or aluminum. But they require high-strength materials. If you’re wondering what screws are, consider this article. There are tons of options available for screw shaft manufacturing. You’ll be surprised how versatile they can be! The choice is yours, and you can be confident that you’ll find the screw shaft that will best fit your application.

China Shenzhen Custom Manufactured CNC Metal Clean Machined Stainless Steel Alloy Single Screw Pump Stator, Rotor Coupling Rod, Drive Shaft     wholesaler China Shenzhen Custom Manufactured CNC Metal Clean Machined Stainless Steel Alloy Single Screw Pump Stator, Rotor Coupling Rod, Drive Shaft     wholesaler
editor by czh 2022-11-28