ACT4SN Reich OEM Drive Coupler

The ACT4SN Reich Arcusaflex Drive Coupler is an OEM coupling from the Reich ACT series, size class 4. This mid-range coupling serves portable air compressors, industrial pump drives, and engine-driven equipment where effective torsional damping is required between the power source and driven machine.

ACT4 couplers handle the torque demands of equipment in the 75-200 HP range. The elastomeric element absorbs diesel engine firing-pulse vibration before it reaches the compressor airend, pump, or generator, protecting bearings, seals, and rotating components from vibratory fatigue. In field service applications where machines run hard across variable loads and conditions, coupler condition directly affects equipment reliability.

The ACT4SN is a direct replacement for equipment originally fitted with this coupling. Verify the exact Arcusaflex model number before ordering, as ACT and ACH series have different torque ratings and are not interchangeable. Install per the equipment manufacturer’s alignment specifications.

Stark Industrial Products stocks ACT4-class Arcusaflex couplers for compressor and industrial equipment service.