153-5540 21 mm Diameter Piston Pin
Cat® 21 mm Diameter Piston Pin
Description
A piston pin, also called a piston pin or wrist pin, is an important part in internal combustion engines that connects the piston and connecting rod. It acts as a pivot point, allowing the piston to move up and down in the cylinder bore while maintaining its connection to the connecting rod.
Attributes
- Minimizes friction and wear between pistons
- Ensures efficient power transmission without excessive energy loss
- Hardened to a Rockwell C hardness of 58~65 HRC, which gives it resistance to deformation and wear
Applications
The piston pin is used to enable the reciprocating motion of the piston to transmit power.
Specifications
| Material | Alloy Steel |
|---|
Compatible Equipment
- Compactors: CB1.8, CB1.7, CC-34B, CB-14
- Mini Excavators: 301.5, 302CR, 301.7CR
- Excavators: 301.8, 301.6








