Carbon Steel Punching Pin Shaft

Product introduction

The flat-head punched pin is a connection and fixing component with exquisite structure, safety and reliability. Its design feature is that both ends are flat and the shaft body is machined with radial through holes. This design allows it to achieve hinged and positioned components while providing a convenient locking channel to effectively prevent axial movement. This product mainly plays two major functions in applications: first, as a hinge pin, connecting two components with through holes, so that they can rotate freely around the center of the pin shaft, and is widely used in connecting rod mechanisms, hydraulic cylinders, crawler links, etc.; second, as a positioning pin, used to fix the relative position of two or more components, withstand shear force, and ensure assembly accuracy. Its core advantage is extremely high security. The flat head design avoids possible interference and safety hazards caused by the protruding head, making the appearance of the device neater. The through hole on the shaft body can be used with cotter pins, circlips or R-type clamps to achieve simple and reliable axial locking, preventing the pin from accidentally falling off under vibration or swing conditions, greatly improving the reliability and safety of equipment operation.

 

Product features

1. Safe and reliable axial locking: This is its core advantage. The through hole in the shaft body can be used with a cotter pin, R-clip or circlip to form a simple, mechanical axial locking. This locking method is very strong and can effectively prevent the pin from accidentally falling out of the mounting hole under vibration or alternating loads, greatly improving the safety and reliability of the equipment.

 

2. Compact structure and high safety: The flat head design makes both ends of the pin flush with the surface of the connecting piece without any protruding parts. This avoids the risk of hooking caused by rotating parts, reduces equipment interference, makes the overall structure more compact and tidy in appearance, and also improves operator safety.

 

3. Easy to install and disassemble: The flat head design is easy to install by hammering or use spacers for ejection and disassembly. With standard locking parts (such as cotter pins), the assembly and disassembly process is very simple, without the need for special tools, which facilitates on-site maintenance and quick inspection of the equipment.

 

4. Diverse functions and flexible applications: it can be used as a hinge pin to connect components and allow their relative rotation (such as connecting rods and rocker arms); it can also be used as a positioning pin to accurately fix the relative position of components and mainly bear shear force.

 

5. High strength and durability: It is usually made of high-quality carbon steel or alloy steel and undergoes heat treatment (such as quenching and tempering) to improve surface hardness and core toughness. It has good wear resistance and shear resistance and can withstand high loads and frequent rotations.

 

Product application

1. Construction machinery and heavy vehicles: It is the core connector of crawler links, hydraulic cylinder piston rods and earrings, connecting rod mechanisms, buckets and other working devices. Its flat head design avoids interference, and the locking method of drilling holes and cotter pins can effectively resist severe vibration and impact, prevent the pin from falling off, and ensure the safety of the equipment.

 

2. Agricultural machinery: widely used in movable connection points of tractor suspension systems, plows, harvesters and other equipment. Its structure can adapt to the harsh working conditions of farmland, has relatively good resistance to mud and water intrusion, and is easy to maintain and replace quickly in the field.

 

3. Industrial automation and conveying equipment: In the link connection of the conveyor chain, the fixation of conveyor rollers, and the joint connection of the robot arm, it not only serves as the rotation center, but also achieves safe fixation through locking parts to ensure long-term operation stability.

 

4. Mold and tooling fixture: Used as a positioning pin, through its precise outer diameter and punching design (can be attached with a drawing thread), it can achieve rapid and precise alignment and fixation of the mold template and withstand shear force.

 

5. Other general machinery: Any situation where two parts need to swing or rotate relative to each other and must prevent axial movement, such as valve connecting rods, heavy door hinges, packaging machinery, etc., flat-head punched pins are the first choice for economical, reliable and safe solutions.

 

FAQ

Q: What are the core advantages of flat-head drilled pins?

A: Its core advantages lie in "safe and reliable axial locking" and "compact and safe structure". Installing a cotter pin or R-type clamp through the through hole on the shaft body can form a strong mechanical anti-falling structure. At the same time, the flat head design avoids convex parts, reduces the risk of interference, and improves equipment safety and aesthetics.

 

Q: What locking parts is it usually used with? How to choose?

A: Mainly used with the following standard locking parts: Cotter pin: the most commonly used, reliable locking, low cost, but it is a one-time use.

R-type pin (elastic pin): more convenient to install and disassemble, reusable, suitable for occasions with limited space. Circling ring (retaining ring for hole): The circlip groove needs to be processed on the pin shaft, which is suitable for occasions where the axial space is precise and frequent disassembly is required.

 

Q: What is the difference between it and ordinary cylindrical pins and elastic pins?

A: Compared with ordinary cylindrical pins: Ordinary cylindrical pins are mainly fixed by interference fit and are used for positioning. There is no special design to prevent axial movement. The flat-head punched pin actively prevents it from falling off through the locking piece, and is mainly used for hinges and shearing. Compared with elastic pins: The elastic pin itself is fixed by elastic expansion and has a certain ability to resist falling off, but its shear resistance is usually lower than that of a solid flat-head punched pin. Flat-head drilled pins have more advantages in heavy-load and high-shear force applications.

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