The ACT4.1SN Reich Arcusaflex Drive Coupler is an OEM coupling from the Reich ACT series, size class 4.1. This coupling serves portable compressors and industrial equipment in the mid power range, providing torsional vibration isolation between the engine and driven component.
ACT4.1 couplers are specified in equipment where the torque demands fall between the ACT4 and ACT5 size classes. The elastomeric element absorbs engine firing-pulse vibration, protecting compressor airends, pump bearings, and downstream rotating components from vibratory fatigue during continuous operation.
The ACT4.1SN is a direct replacement for equipment originally fitted with this coupling. Install per the equipment manufacturer’s alignment specifications and verify smooth operation after startup.
In stock at Stark Industrial Products for compressor and equipment maintenance.



















