Product Description

Product description                                                                    

Product Name	Stainless Steel DIN Stud Bolt Fasteners Threaded Rod
Specification	According to customer’s demand
Material	Stainless steel, Brass, Copper, Aluminum, Carbon steel, Alloy steel etc.
Surface Treatment	Zn-plating, Ni-plating, Cr-plating, Tin-plating, copper-plating, The wreath oxygen resin spraying,The heat disposing, Hot-dip galvanizing, Black oxide coating, Painting, Powdering, Color zinc-plated, Blue black zinc-plated, Rust preventive oil, Titanium alloy galvanized, Silver plating,Plastic, Electroplating, Anodizing etc.
Applications	Automotive, Instrument, Electrical equipment, Household appliances, Furniture, Mechanical equipment, Daily living equipment, Electronic sports equipment, Light industry products,Sanitation machinery, Market/ Hotel equipment supplies etc.
Producing Equipment	CNC machine SHENGYU & SYX42..Other machines
Packaging	Inner plastic bag, outer carton box, and we can also pack products according to your requirements.
Delivery	15 Day to 25 Days, If urgent 10 days are acceptable
Main Markets	North America, South America, Eastern Europe , West Europe , North Europe, South Europe, South Asia, Africa African
About us	Our company was founded in October, 2000, specializing in the production of CNC/AUTO lathe, springs, shafts, screws, stamping parts and other metal parts. Our main production modes are designing and proofing based on customers’ drawings

Strict inspection during operation

1.We have specialized QC testers to check the products quality according to different customers.

2.We have IQC to check the dimensions and surface of the incoming material.

3.We have PQC to inspect full-course during the processing.

4.We have FQC to inspect all the plating products from outsides and make the 100% inspection before the shipments.
We are willing to provide with sample for quality and function testing. We are a certified firm with ISO 9001: 2008. Our products are excellent in quality and reasonable in price.

For more information about our company, please visit our website: 
 

Our after sales service policy

1.The new samples will be rebulid for customers if the old samples can not meet the requirements of the drawings or samples from the customers. 2.The qualitified products will be re-sent to the customers if there comes to 5% unqualitified goods in the mass production we send to the customers. 3.Our sales team will answer the complaints from the customers with 12 hours. To protect our customers’ profits is our factory’s main culture,and we are working together with our customers to make our after service better and better.

Company information                                                            

Shipping                                                                             

Our service                                                                             

Q1: What’s your business scope? 
A:Our business scope is stamping,lathe turning,CNC maching.CNC milling,spring,shaft,screw etc, Professional Assembly Parts Manufacture Custom.

 

Q2: Are you a manufacture or trading company?
A: We have been a Hardware Part Manufacturer since 2000.

Q3: Where is your factory located? How can I visit it? 
A: Our factory is located in HangZhou,ZheJiang , HangZhou is the Closest city from HangZhou and HangZhou,hongkong. 1 hour from HangZhou and HangZhou by car. 1.5 hours flight from Hong Kong ( 0.5 hour by boat+1 hour by car).

Q4: How to guarantee the same quality of samples and finished products ?
A: We have a strict and effective quality control system through the whole production processes including initial production check,medium-term production check and final random inspection.

Q5: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight. But if your products are customized, we could not offer the sample for free charge.

Contact People
If you have another question, pls feel free to contact us as below~
Contact Person: MirHangZhou Liu
 
 
 
 
 
 
 
 

 

Lead Screws and Clamp Style Collars

If you have a lead screw, you’re probably interested in learning about the Acme thread on this type of shaft. You might also be interested in finding out about the Clamp style collars and Ball screw nut. But before you buy a new screw, make sure you understand what the terminology means. Here are some examples of screw shafts:

Acme thread

The standard ACME thread on a screw shaft is made of a metal that is resistant to corrosion and wear. It is used in a variety of applications. An Acme thread is available in a variety of sizes and styles. General purpose Acme threads are not designed to handle external radial loads and are supported by a shaft bearing and linear guide. Their design is intended to minimize the risk of flank wedging, which can cause friction forces and wear. The Centralizing Acme thread standard caters to applications without radial support and allows the thread to come into contact before its flanks are exposed to radial loads.
The ACME thread was first developed in 1894 for machine tools. While the acme lead screw is still the most popular screw in the US, European machines use the Trapezoidal Thread (Metric Acme). The acme thread is a stronger and more resilient alternative to square threads. It is also easier to cut than square threads and can be cut by using a single-point threading die.
Similarly to the internal threads, the metric versions of Acme are similar to their American counterparts. The only difference is that the metric threads are generally wider and are used more frequently in industrial settings. However, the metric-based screw threads are more common than their American counterparts worldwide. In addition, the Acme thread on screw shafts is used most often on external gears. But there is still a small minority of screw shafts that are made with a metric thread.
ACME screws provide a variety of advantages to users, including self-lubrication and reduced wear and tear. They are also ideal for vertical applications, where a reduced frictional force is required. In addition, ACME screws are highly resistant to back-drive and minimize the risk of backlash. Furthermore, they can be easily checked with readily available thread gauges. So, if you’re looking for a quality ACME screw for your next industrial project, look no further than ACME.

Lead screw coatings

The properties of lead screw materials affect their efficiency. These materials have high anti-corrosion, thermal resistance, and self-lubrication properties, which eliminates the need for lubrication. These coating materials include polytetrafluoroethylene (PFE), polyether ether ketone (PEK), and Vespel. Other desirable properties include high tensile strength, corrosion resistance, and rigidity.
The most common materials for lead screws are carbon steel, stainless steel, and aluminum. Lead screw coatings can be PTFE-based to withstand harsh environments and remove oil and grease. In addition to preventing corrosion, lead screw coatings improve the life of polymer parts. Lead screw assembly manufacturers offer a variety of customization options for their lead screw, including custom-molded nuts, thread forms, and nut bodies.
Lead screws are typically measured in rpm, or revolutions per minute. The PV curve represents the inverse relationship between contact surface pressure and sliding velocity. This value is affected by the material used in the construction of the screw, lubrication conditions, and end fixity. The critical speed of lead screws is determined by their length and minor diameter. End fixity refers to the support for the screw and affects its rigidity and critical speed.
The primary purpose of lead screws is to enable smooth movement. To achieve this, lead screws are usually preloaded with axial load, enabling consistent contact between a screw’s filets and nuts. Lead screws are often used in linear motion control systems and feature a large area of sliding contact between male and female threads. Lead screws can be manually operated or mortised and are available in a variety of sizes and materials. The materials used for lead screws include stainless steel and bronze, which are often protected by a PTFE type coating.
These screws are made of various materials, including stainless steel, bronze, and various plastics. They are also made to meet specific requirements for environmental conditions. In addition to lead screws, they can be made of stainless steel, aluminum, and carbon steel. Surface coatings can improve the screw’s corrosion resistance, while making it more wear resistant in tough environments. A screw that is coated with PTFE will maintain its anti-corrosion properties even in tough environments.

Clamp style collars

The screw shaft clamp style collar is a basic machine component, which is attached to the shaft via multiple screws. These collars act as mechanical stops, load bearing faces, or load transfer points. Their simple design makes them easy to install. This article will discuss the pros and cons of this style of collar. Let’s look at what you need to know before choosing a screw shaft clamp style collar. Here are some things to keep in mind.
Clamp-style shaft collars are a versatile mounting option for shafts. They have a recessed screw that fully engages the thread for secure locking. Screw shaft clamp collars come in different styles and can be used in both drive and power transmission applications. Listed below are the main differences between these 2 styles of collars. They are compatible with all types of shafts and are able to handle axial loads of up to 5500 pounds.
Clamp-style shaft collars are designed to prevent the screw from accidentally damaging the shaft when tightened. They can be tightened with a set screw to counteract the initial clamping force and prevent the shaft from coming loose. However, when tightening the screw, you should use a torque wrench. Using a set screw to tighten a screw shaft collar can cause it to warp and reduce the surface area that contacts the shaft.
Another key advantage to Clamp-style shaft collars is that they are easy to install. Clamp-style collars are available in one-piece and two-piece designs. These collars lock around the shaft and are easy to remove and install. They are ideal for virtually any shaft and can be installed without removing any components. This type of collar is also recommended for those who work on machines with sensitive components. However, be aware that the higher the OD, the more difficult it is to install and remove the collar.
Screw shaft clamp style collars are usually one-piece. A two-piece collar is easier to install than a one-piece one. The two-piece collars provide a more effective clamping force, as they use the full seating torque. Two-piece collars have the added benefit of being easy to install because they require no tools to install. You can disassemble one-piece collars before installing a two-piece collar.

Ball screw nut

The proper installation of a ball screw nut requires that the nut be installed on the center of the screw shaft. The return tubes of the ball nut must be oriented upward so that the ball nut will not overtravel. The adjusting nut must be tightened against a spacer or spring washer, then the nut is placed on the screw shaft. The nut should be rotated several times in both directions to ensure that it is centered.
Ball screw nuts are typically manufactured with a wide range of preloads. Large preloads are used to increase the rigidity of a ball screw assembly and prevent backlash, the lost motion caused by a clearance between the ball and nut. Using a large amount of preload can lead to excessive heat generation. The most common preload for ball screw nuts is 1 to 3%. This is usually more than enough to prevent backlash, but a higher preload will increase torque requirements.
The diameter of a ball screw is measured from its center, called the ball circle diameter. This diameter represents the distance a ball will travel during 1 rotation of the screw shaft. A smaller diameter means that there are fewer balls to carry the load. Larger leads mean longer travels per revolution and higher speeds. However, this type of screw cannot carry a greater load capacity. Increasing the length of the ball nut is not practical, due to manufacturing constraints.
The most important component of a ball screw is a ball bearing. This prevents excessive friction between the ball and the nut, which is common in lead-screw and nut combinations. Some ball screws feature preloaded balls, which avoid “wiggle” between the nut and the ball. This is particularly desirable in applications with rapidly changing loads. When this is not possible, the ball screw will experience significant backlash.
A ball screw nut can be either single or multiple circuits. Single or multiple-circuit ball nuts can be configured with 1 or 2 independent closed paths. Multi-circuit ball nuts have 2 or more circuits, making them more suitable for heavier loads. Depending on the application, a ball screw nut can be used for small clearance assemblies and compact sizes. In some cases, end caps and deflectors may be used to feed the balls back to their original position.