Center: Up to 6 in., 1750 rpm; 7 in. to 14 in., Up to 450 rpm
Builder Specification
| Mobil SHC 630 | Temperature Ambient Below : 15°F/-9.52°C |
| Mobil SHC 634 | Temperature Ambient Range : 15°F/-9.52°C - 60°F/15.68°C |
| Mobil SHC 634 | Temperature Ambient Range : 50°F/10.08°C - 125°F/52.08°C |