Hardened and chrome-plated steel pins

What are hardened and chrome-plated pins?

A pin is a component that connects moving parts of a machine – e.g., a bucket of an excavator to the arm, a cylinder to the boom, or individual elements of a working system. For a pin to effectively transfer large loads and operate in harsh conditions, it must meet several important requirements:

• high core hardness – ensures resistance to shearing and deformation under load,
• hardened, chrome-plated surface – increases resistance to wear and corrosion,
• precision of workmanship – precise dimensional tolerances minimize play in the connection,
• smooth surface – reduces friction and facilitates lubrication, extending the lifespan of both the pin and the bushing.

The combination of hardening and chrome plating is a standard used in working elements of construction machines – hardening ensures mechanical strength, while the chrome layer protects the surface from corrosion and accelerated wear.

Pins, chrome rods, and piston rods – what’s the difference?

In BIMEX Gdańsk's offer, you will find not only ready-made pins but also chrome rods in various diameters and lengths, which can be used, among other things, for the production or regeneration of hydraulic cylinder rods. A piston rod is a moving element of a cylinder that – like a pin – must feature a hard, chrome-plated surface, resistant to scratches and corrosion, as it directly contacts seals and operates in the extension and retraction cycle of the piston.

Advantages of steel pins from BIMEX Gdańsk

1. High resistance to loads and wear
Hardening of the core ensures that pins maintain appropriate hardness and strength even under high dynamic loads typical for excavators, loaders, or construction machines.

2. Chrome-plated surface – less wear and corrosion
The chrome layer reduces friction in the pin-bushing connection, resulting in less wear of both components and a longer lifespan of the entire working system.

3. Precise dimensions tailored to the machine
Precision of workmanship is essential – too much play accelerates wear of the sockets, while too little complicates installation and operation of the system.

4. Wide range of applications
Steel pins are used not only in excavators but also in:

• wheeled and tracked loaders,
• backhoe loaders,
• agricultural machines,
• trailers and semi-trailers,
• forestry and industrial machines,
• suspension systems and working equipment,
• hydraulic cylinders – as chrome rods for the production or regeneration of piston rods.

5. Favorable price without sacrificing quality
At BIMEX Gdańsk, we focus on solutions that combine solid workmanship with a reasonable price.

When should a pin be replaced?

Signs that a pin needs replacement usually include:

• visible play in the machine's working connections,
• unusual knocking or vibrations during the operation of the equipment,
• traces of grease leakage or accelerated wear of the bushing,
• visible scratches, dents, or losses on the surface of the pin.

Steel pins – buy at BIMEX Gdańsk

If you are looking for a pin tailored to a specific machine or need help selecting the right dimensions, please contact our team at BIMEX Gdańsk.