Timing Pulley |
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| Precision Grade | JIS Grade N5 (jis B 1702-1: 1998) JIS Grade 1 (JIS B 1702:1976) |
Core hardness | HB300320 |
| Surface hardness | HRC 5560 | ||
| Gear teeth | Standard full depth | Surface treatment | |
| Pressure angle | 20 | Surface finish | Ground |
| Material | SCM415 / Aluminiam | Datum reference surface | |
| Heat treatment | overall carburizing | for gear grinding | Bore |