Steel 5120 hard chrome plated piston pin
The piston pin is made of steel 5120, quenched and tempered to HRC 33-38, then plated with hard chrome.
We need to grind the piston pins twice, before and after the hard chrome plating, in order to meet the tight tolerance on the OD.
Part specifications
| Material | Steel AISI 5120 (GB Cr20) |
| Size (mm) | OD 35 x Length 130 |
| Tolerance for key dimension (mm) | 0/-0.007mm on the OD |
| Roughness | Ra0.16-0.32 um |
| Coating: | Hard chrome plating 0.08-0.12mm thick |
| Processes | CNC turning, centerless grinding |
