| Specification | VR90 |
| Max. dia. of valves to be ground | 90mm |
| Dia. of valve stems to be gripped (standard) | 6 ~ 16mm |
| Dia. of valve stems to be gripped (special) | 4 ~ 7mm |
| Dia. of valve stems to be gripped (special) | 14~ 18mm |
| Angles of valves to be ground | 25 ~ 60° |
| Longitudinal movement of geared head | 120mm |
| Transverse movement of grinding wheel head | 95mm |
| Max. cutting depth of ground valve | 0.025mm |
| Grinding wheel spindle speed | 4500rpm |
| Geared head spindle speed | 125rpm |