Products Description

Cylindrical pins are a common type of mechanical fastener that is usually used to locate, connect or secure two or more mechanical parts. Cylindrical pins may undergo some surface treatments, such as galvanization and chrome plating. Galvanized Cylindrical Pins are effective in preventing rust in general environments. Chrome-plated cylindrical pins, on the other hand, have better abrasion resistance and bright appearance, and are suitable for some occasions that require high appearance and abrasion resistance.

Product Features

Solid construction with high rigidity.

High positioning accuracy, suitable for precision assembly.

Lacks elasticity and cannot compensate for assembly errors.

Limited disassembly cycles; repeated disassembly may cause loose fits.

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Parameter

Standard	DIN7
Name	Cylindrical pin
Material	carbon steel and alloy steel, etc.
Grade	Grade 4.8, Grade 5.8, Grade 8.8
Nominal Diameter	M2-M48
Surface treatment	ZP,YZ
Alias	Locating pin, Fixed pin

Automotive Industry

The automotive industry demands high reliability, with cylindrical pins commonly used for positioning in non-high-vibration areas. In the connection between the engine block and cylinder head, the cylindrical pin is used for positioning to ensure the sealing performance and correct assembly position between the two. In the connection between the piston and connecting rod, the cylindrical pin determines the relative position of the piston pin hole and the connecting rod small head hole, ensures the precision of the reciprocating motion of the piston in the cylinder, and has an important impact on the power output and operational stability of the engine.

Primary Applications:

Engine component positioning: e.g., auxiliary positioning for valve mechanisms and timing systems.
Chassis component connections: e.g., control arm bushing positioning and stabilizer bar attachments.
Interior structure positioning: e.g., seat frame and door lock mechanism partial positioning points.
Electronic control system mounting: e.g., sensor bracket positioning.

Note: Spring pins are more commonly used in high-vibration areas within the automotive industry.

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Machinery Manufacturing Industry

This represents the primary application domain for cylindrical pins. In excavators, loaders and other equipment, cylindrical pins are used to connect and position various mechanical arms, bucket rods and other components. Its high-precision positioning function ensures the accurate movement of mechanical parts in the working process and improves the operational precision of the equipment. At the same time, when subjected to the huge force in the process of digging and loading, the cylindrical pin can effectively transfer the force and ensure the stability of the connection of components.

Main Applications:

Shaft and hub positioning/fixing: Prevents relative rotation in components like gears, pulleys, and couplings.
Precision positioning of mechanisms: Used for positioning in automated equipment, robotic joints, and machine tool attachments.
Connecting linkages, rocker arms, and similar structures: Providing reliable rotational pivot points.
Preventing component displacement: Securing part positions in structures with minimal vibration.

Typical equipment:

CNC machine tools, automated production lines, textile machinery, printing machinery, food processing equipment

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