China wholesaler Arrow 38crmoala Screw Barrel Zn-BS82 and Twin Screw Element Barrel Shaft Barrel Screw 1/4 shaft collar with set screw

Product Description

Product Introduction

 We have got ISO9001:2000 certification and the durability of our extrusion dies exceeds the similar products about 50%. Moreover, our excellent R&D staff guarantee that we can make any kind of extrusion die according to customer requirements. The high tech of die manufacture assist building a good reputation for our company. Also, we are well known in this field both home and abroad.


1.Can be quick assembling as die plates with straight pins.
2.Scientific cavity design and polished channel to ensure smooth extrusion and higher extrusion speed.
3. High quality hard chrome plating 3Cr17 nimo / Din.
4. Experienced technicians and precision equipments ensure the tolerance accuracy of the mould.
5.Scientific designed extrusion channel.,

Our extrusion die is widely used in producing aluminum profiles, which is used in the food industry, the packaging industry, construction field and decoration, ships and pressure vessels, high-speed rail, aviation component products, such as easy-to-pull tanks , chemical storage containers, partition houses, mobile rooms, offshore pipelines, aircraft skeleton, window profiles, door profiles, profiles for curtain wall, the profiles for solar etc.The more commonly used specifications include 6061 and 6063 series.

Basic Info. 

item value Marketing Type Hot
Type Extrusion Making Machine Condition New
Screw Design Double-screw/Counter-rotating Parallel Twin-screw Screw Material 40CrMoTi
Screw Speed (rpm) 30rpm Showroom Location None
Place of Origin ZheJiang China  Brand Name Arrow
Weight 30KG Warranty 1 Year
Key Selling Points Competitive Price Applicable Industries Pet Food Industries; puff Snack industries; Aquatic Feed Industries
Marketing Type Ordinary Product Video outgoing-inspection Provided
Machinery Test Report Provided Warranty of core components 1 Year
Core Components Other Product Name Dies for Extruded Machine
Raw material Flour;Corn; Wheat; Oat Grains etc.  Keywords Extrusion die
Final product Diameters Pipes Feature High Production Efficiency

Process Characteristics of Aluminum Extrusion Molding


1. During the extrusion process, the extruded metal can obtain a more intense and uniform triaxial compression stress state in the deformation area than the rolling forging, which can give full play to the plasticity of the processed metal itself;

2. Extrusion molding can not only produce bar, tube, type, and line products with simple section shape but also produce profiles and pipes with complex section shape;

3. The flexibility of extrusion molding is large. Only the extrusion tools such as molds need to be replaced to produce products with different shapes, specifications, and varieties on 1 equipment.

4. High precision of extrusion products, good surface quality of products, and improve the utilization rate and yield of metal materials;

5. The extrusion process has a good effect on the mechanical properties of the metal;

6. The short technological process, convenient production, single extrusion or larger overall structure parts with a larger area than hot die forging or molding and rolling, low equipment investment, low mold cost, and high economic efficiency;

7. Aluminum alloy has good extrusion characteristics and is especially suitable for extrusion processing. It can be processed through various extrusion processes and various die structures.

8. Processing methods commonly used include: turning by NC lathe, milling by CNC (computer numerical control) machine , grinding by CNC machine, drilling, wire cutting, EDM electrical-discharge machining.



After-sale Service
After-Sale Service

1 After each die test, if there is any feedback on any problem, we will provide the mold correction plan or suggestion within 48 hours.
2 For customers who has given orders regularly, the sales manager will bring technical staff to visit every 6 months to understand and summarize the main problems in the use of molds, and give feedbacks to the designers for later promotion and improvement.
3 For customers whose purchase volume reaches a certain scale, the company can send die corrector to the customer site for a period of time to carry out mold system correction and maintenance.

Company profile
ZheJiang Arrow Machinery Co., 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.

1.What’s the order process?
1)Inquiry—provide us size or picture of the products.
2)Quotation—official quotation from with all clear specifications from our professional team.
3)Marking Sample — confirm all quotation details and the final sample.
4)Shipping—by sea or by air.
2.How do you ship the products?
By Sea .
3.What is the average delivery time?
One set usually takes about 25-30days depending on product type. Bulk order usually takes about 35-60 days.
4.What the material of the mould?
We use 3cr17 for the total mould.

AfterSale Serv

Shipping Cost:

Estimated freight per unit.

To be negotiated
After-sales Service: Online 24/7 Installation Guide
Warranty: 1 Year
Material: Stainless Steel
US$ 99999/Piece
1 Piece(Min.Order)


Order Sample



Customized Request


Screw Shaft Types

A screw shaft is a cylindrical part that turns. Depending on its size, it is able to drive many different types of devices. The following information outlines the different types of screws, including their sizes, material, function, and applications. To help you select the right screw shaft, consider the following factors:


A screw can come in a variety of shapes and sizes, ranging from a quarter to a quarter-inch in diameter. A screw is a cylindrical shaft with an inclined plane wrapped around it, and its main function is to fasten objects together by translating torque into a linear force. This article will discuss the dimensions of screws and how to determine the size of a screw. It is important to note that screw sizes can be large and small depending on the purpose.
The diameter of a screw is the diameter of its shaft, and it must match the inner diameter of its nuts and washers. Screws of a certain diameter are also called machine screws, and they can be larger or smaller. Screw diameters are measured on the shaft underneath the screw head. The American Society of Mechanical Engineers (ASME) standardized screw diameters in 3/50-inch to 16 (3/8-inch) inches, and more recently, sizes were added in U.S. fractions of an inch. While shaft and head diameters are standardized, screw length may vary from job to job.
In the case of the 2.3-mm screw group, the construct strength was not improved by the 1.2-mm group. The smaller screw size did not increase the strength of the construct. Further, ABS material did not improve the construct strength. Thus, the size of screw shaft is an important consideration in model design. And remember that the more complex your model is, the larger it will be. A screw of a given size will have a similar failure rate as a screw of a different diameter.
Although different screw sizes are widely used, the differences in screw size were not statistically significant. Although there are some limitations, screws of different sizes are generally sufficient for fixation of a metacarpal shaft fracture. However, further clinical studies are needed to compare screw sizes for fracture union rates. So, if you are unsure of what size of screw shaft you need for your case, make sure to check the metric chart and ensure you use the right one.


The material of a screw shaft plays an important role in the overall performance of a screw. Axial and central forces act to apply torque to the screw, while external forces, such as friction, exert a bending moment. The torsional moments are reflected in the torque, and this causes the screw to rotate at a higher rate than necessary. To ensure the longevity of the screw, the material of the screw shaft should be able to handle the bending moment, while the diameter of the shaft should be small enough to avoid causing damage.
Screws are made from different metals, such as steel, brass, titanium, and bronze. Manufacturers often apply a top coating of chromium, brass, or zinc to improve corrosion resistance. Screws made of aluminum are not durable and are prone to rusting due to exposure to weather conditions. The majority of screw shafts are self-locking. They are suited for many applications, including threaded fasteners, C-clamps, and vises.
Screws that are fabricated with conical sections typically feature reduced open cross-sectional areas at the discharge point. This is a key design parameter of conical screw shafts. In fact, reductions of up to 72% are common across a variety of applications. If the screw is designed to have a hard-iron hanger bearing, it must be hardened. If the screw shaft is not hardened, it will require an additional lubricant.
Another consideration is the threads. Screw shafts are typically made of high-precision threads and ridges. These are manufactured on lathes and CNC machines. Different shapes require different materials. Materials for the screw shaft vary. There are many different sizes and shapes available, and each one has its own application. In addition to helical and conical screw shafts, different materials are also available. When choosing material, the best one depends on the application.
The life of the screw depends on its size, load, and design. In general, the material of the screw shaft, nut body, and balls and rollers determine its fatigue life. This affects the overall life of the screw. To determine whether a specific screw has a longer or shorter life, the manufacturer must consider these factors, as well as the application requirements. The material should be clean and free of imperfections. It should be smooth and free of cracks or flaking, which may result in premature failure.


The function of a screw shaft is to facilitate the rotation of a screw. Screws have several thread forms, including single-start, double-start and multi-start. Each form has its own advantages and disadvantages. In this article we’ll explore each of them in detail. The function of a screw shaft can vary based on its design, but the following are common types. Here are some examples of screw shaft types and their purposes.
The screw’s torque enables it to lift objects. It can be used in conjunction with a bolt and nut to lift a load. Screws are also used to secure objects together. You can use them in screw presses, vises, and screw jacks. But their primary function is to hold objects together. Listed below are some of their main functions. When used to lift heavy loads, they can provide the required force to secure an object.
Screws can be classified into two types: square and round. Square threads are more efficient than round ones because they apply 0deg of angle to the nut. Square threads are also stronger than round threads and are often used in high-load applications. They’re generally cheaper to manufacture and are more difficult to break. And unlike square threads, which have a 0deg thread angle, these threads can’t be broken easily with a screwdriver.
A screw’s head is made of a series of spiral-like structures that extend from a cylindrical part to a tip. This portion of the screw is called the shank and is made of the smallest area. The shank is the portion that applies more force to the object. As the shaft extends from the head, it becomes thinner and narrow, forming a pointed tip. The head is the most important part of the screw, so it needs to be strong to perform its function.
The diameter of the screw shaft is measured in millimeters. The M8 screw has a thread pitch of 1.25 mm. Generally, the size of the screw shaft is indicated by the major and minor diameter. These dimensions are appended with a multiplication sign (M8x1).


The design of screws, including their size and shape, determines their critical rotating speeds. These speeds depend on the threaded part of the screw, the helix angle, and the geometry of the contact surfaces. When applied to a screw, these limits are referred to as “permissible speed limits.” These maximum speeds are meant for short periods of time and optimized running conditions. Continuous operation at these speeds can reduce the calculated life of a nut mechanism.
The main materials used to manufacture screws and screw shafts include steel, stainless steel, titanium, bronze, and brass. Screws may be coated for corrosion resistance, or they may be made of aluminium. Some materials can be threaded, including Teflon and nylon. Screw threads can even be molded into glass or porcelain. For the most part, steel and stainless steel are the most common materials for screw shafts. Depending on the purpose, a screw will be made of a material that is suitable for the application.
In addition to being used in fasteners, screw shafts are used in micrometers, drillers, conveyor belts, and helicopter blades. There are numerous applications of screw shafts, from weighing scales to measuring lengths. If you’re in the market for a screw, make sure to check out these applications. You’ll be happy you did! They can help you get the job done faster. So, don’t delay your next project.
If you’re interested in learning about screw sizing, then it’s important to know the axial and moment loads that your screws will experience. By following the laws of mechanics and knowing the load you can calculate the nominal life of your screw. You can also consider the effect of misalignment, uneven loading, and shocks on your screw. These will all affect the life of your screw. Then, you can select the right screw.

China wholesaler Arrow 38crmoala Screw Barrel Zn-BS82 and Twin Screw Element Barrel Shaft Barrel Screw   1/4 shaft collar with set screwChina wholesaler Arrow 38crmoala Screw Barrel Zn-BS82 and Twin Screw Element Barrel Shaft Barrel Screw   1/4 shaft collar with set screw
editor by CX 2023-09-05