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Valve Seat Grinder VR90(3M9390A)
3M9390A Valve grinder is specially designed for automobile repairing factories and agricultural machinery repairing centers. It is compact and light weight, with simple construction and easy operation. It is necessary equipment for automobile repairing service.
| Model | Unit | VR90/3M9390A |
| Max. dia. of valves to be ground | mm | 90 |
| Dia. of valve stems to be gripped (standard) | mm | 6 ~ 16 |
| Dia. of valve stems to be gripped (special) | mm | 4 ~ 7 |
| Dia. of valve stems to be gripped (special) | mm | 14~ 18 |
| Angles of valves to be ground | ° | 25 ~ 60 |
| Longitudinal movement of geared head | mm | 120 |
| Transverse movement of grinding wheel head | mm | 95 |
| Max. cutting depth of ground valve | mm | 0.025 |
| Grinding wheel spindle speed | rpm | 4500 |
| Geared head spindle speed | rpm | 125 |
| Motor for grinding wheel head | ||
| Model | YC-Y7122 | |
| Power | kw | 0.37 |
| Voltage | v | 220 |
| Frequency | Hz | 50/60 |
| Speed | rpm | 2800 |
