China high quality Custom Hot Die Forging/ Cold Die Forging Spare Parts Used in Auto Parts/Construction Machinery/Agricultural Machinery/Electronics/Vehicle/Truck/Train/Valve with Hot selling

Product Description

Product Description

Customize available when get drawing or sample
*High-tech and complex-shaped aluminum alloy&copper cold forging and warm forging parts.
*Super long aluminum alloy&copper cold forged and warm forged shaft, pipe and tube (maximum length: 700mm). 
*Large end and super thin special section aluminum alloy&copper cold forged and warm forged part (like IPAD crust, the thinnest can be0.6mm).
*High-precision aluminum alloy&copper cold forged and warm forged parts, no secondary machining after heat treatment.
*Cold forged and warm forged parts of Special kinds of aluminum alloy or copper (Such as 2571, 2A12, 7075, 7A09, 5082, 5052, etc.).
*High-precision 3D aluminum alloy&copper cold forged and warm forged parts.
*High tensile strength and yield strength aluminum alloy&copper cold forged and warm forged parts.
*High-speed aluminum alloy&copper cold forging with high efficiency and low cost.                                              
*High-tech aluminum alloy&copper forged heat sink.
 CNC Machining
*We are manufacturer has provided customized services for more than 10 years.we focus on customer needs and customer satisfaction.
*Provide 2D&3D drawing for modifying.
*Competitive price with good quality
*Customized size and specification/OEM & ODM by customer design 
*Good appearance working 
*Complex and Precision CNC Parts
Surface Treatment Technology
Grinding, grinding, polishing, sand blasting, wire drawing, passivation, anodizing, electrophoresis, powder spraying, paint baking are completed in one-stop factory, with more guaranteed quality and more competitive price.

*Color Anodizing, such as black, blue, red, gold, stainless steel, etc;
*Two-tone anodizing;
*Hard anodizing;
*Color anodizing with strong fastness, such as car skylight, solar frame, etc;
*Forging parts colorful anodizing,with even and beautiful surface.
*High precision anodizing,in the tolerance of 5mu;
*High brightness mirror anodizing;
*Anodizing in difficult aluminum alloy such as 2571, 2A12, 4032, 7075 with beautiful color and without material grain;
*Micro-arc oxidation;
*One package 1 factory service for all grinding, polishing, sandblasting, wire drawing, passivation, anodizing, electrophoresis, powder spraying, paint baking with assured quality and more competitive price.

Electrophoresis /Powder spraying /Stoving varnish
*Material: alloy, copper, stainless steel, iron, etc;
*Colors: black, white, blue, gold, red etc.Matt or light effect;
*Property requirement: anti-salted property,strong fastness,anti-aging and wear-proof.
*Surface is “zero defect” with smooth and even surface, no particles and marks.

Related Products


Our products applied in the field of
Automotive,Electronics,Machinery,Agriculture machinery,Appliances industries,Motorcycles,Bicycles,Communications,Sports equipment,Medical equipment etc.

Company Profile

E&I was founded in ZheJiang in2011. E&I is a Chinese manufacturer specialize in High-tech aluminum and copper forging,machining, surface treatment, anodising… 1 package service.
After ten years of development, the factory has grown into one of the largest china forging factory which is integrated with forging,machining,heat treatment and surface treatment and anodising… 1 package service. We have passed IATF16949 certification of international quality management system. Our products are exported to USA,Japan,Germany,Canada,Italy,Britain,etc.
E&I has always adhered to high-end quality ,and strives for excellence. In addition to the ZheJiang  factory,we have established another new HangZhoufactory located in ZheJiang  province,  it covers about 13,000 square meters building area.
Rregarding the detailed information of our factory, welcome you to contact with us, thank you!

Our Team & Company Show
E&I persistent in strong R&D capacity and innovation ability.
We have professional and united technical team&QC team&service team.

Partial Product Equipments

We firmly believe the E&I will bring more excellent metal forging and precision forming solution to more industries in the future.

100T/200T/300T/500T/1000T/2000T/3000T ZheJiang WETORI forging press

CNC Machining Center

Automatic Anodizing line

Partial Equipments of Testing & inspection


Logistics transportation

->Standard package/Carton or Pallet/As per customized specification.


Q: Are you a trading company or manufacturer?
A: We are manufacturer.
Q:You have several factories of your own
A: At present, we have 2 factories of our own,ZheJiang factory and HangZhou factory
Q: How to get the quote?
A: Please sent your 2D&3D drawings(PDF,STP.IGS, us by email and tell us the material,
Surface treatment and quantities,then we will quote to you within 24 hours.
Q: Can you produce according to the samples?
A: Yes,we can produce by you samples.
Q: How long is your delivery time?
A: 30-45 days depends on the order quantities and product process.The lead time is the general production period without the transportation time. 
Q: Do you test all your goods before delivery?
A: Yes,we have 100% test before delivery.
Q: How do you make our business long-term and good relationship?
A: 1,we keep good quality and competitive price to ensure our customers benefit;
    2,We respect every customer as our friend and we sincerely do business and make friends with them,no matter where they come from.
All parts are custom made according to customer’s drawings or samples.If you have any parts to be made, please feel free to send your kind drawings/samples to us.Technical drawings including material mark, Product weight, Purchase quantity.The comprehensive information will help us quickly calculate the accurate and reasonable price for you.



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.

China high quality Custom Hot Die Forging/ Cold Die Forging Spare Parts Used in Auto Parts/Construction Machinery/Agricultural Machinery/Electronics/Vehicle/Truck/Train/Valve     with Hot sellingChina high quality Custom Hot Die Forging/ Cold Die Forging Spare Parts Used in Auto Parts/Construction Machinery/Agricultural Machinery/Electronics/Vehicle/Truck/Train/Valve     with Hot selling


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