Chrome-plated shafts are precision cylindrical rods that have undergone electroplating.  Typically made from 45# steel, they are coated with a layer of hard chrome, possessing high hardness, wear resistance, corrosion resistance, and a bright finish. They are widely used in automation machinery, linear bearing guide rails, hydraulic and pneumatic piston rods, and other applications, primarily for guiding linear motion.

Main Features and Applications:

High hardness: The chrome layer has a hardness of over 62 HRC, enhancing wear resistance.

Corrosion resistance: The chrome layer effectively prevents rust and oxidation.

High precision: The smooth surface, when used with linear bearings, achieves precise linear guidance.

Wide range of applications: Guide rods for automation equipment, robots, printing machinery, packaging machinery, hydraulic cylinders, etc.

Also known as: Chrome-plated rod, linear shaft, hard shaft, piston rod.

Chrome Plating Process and Principle:

A layer of chrome is deposited on the shaft base material (such as 45# steel) through an electrochemical method, forming a substantial hard chrome layer.

The hard chrome plating layer is thicker than decorative chrome plating, aiming to improve wear resistance and restore dimensions.

Difference from Optical Axis:

The term "shaft" here does not refer to the "optical axis" in optical instruments (an imaginary straight line indicating the path of light).

Instead, it refers to a "bright shaft," a linear guide shaft with a bright and smooth surface that has been precision machined and chrome-plated.