All gear ratios in the MAS gear unit product line and all drive and flange options are possible, including solid shaft with flange and hollow shaft with shrink disc. The gear units feature impact-resistant hollow-shaft or shrink-disc covers.
The ATEX 95 certified adapters for motors with frame size from 71 to 225 allow motors with IEC B5 mounting to be attached to modular Watt gear units without modification. For frame sizes from 100 to 225, torque transfer between the motor and the gear unit is handled by form-fitting, zero-backlash claw couplings, with vibration and shock effectively dampened by an elastic coupling spider.
The motors can be used for equipment group I category M2 and equipment group II in zone 1/21 and 2/22 explosion hazard areas.