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P4021Z, P4022Z and P4023Z are graphite-bearing tin bronze sintered bearing materials per ISO 5755. Carbon present as free graphite provides superior solid lubrication for emergency running and boundary lubrication conditions.
| Element | Content |
|---|---|
| Cu | Balance |
| Sn | 9–11% |
| C | 0.5–2.0% |
| Other | < 2% |
| Property | Value |
|---|---|
| Density | 6.0–7.5 g/cm³ |
| Radial Crushing Strength K | 100–170 N/mm² |
| Oil Content | ≥ 12% (min.) |
Comparable Standards: DIN SINT-A51 / B51 / C51.
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