The ACT3SN Reich Arcusaflex Drive Coupler is an OEM coupling from the Reich ACT series, size class 3.
ACT3SN couplers are specified in portable air compressors and light industrial equipment where the coupling connects an engine flywheel or a specialized drive flange to a standard keyed shaft.
During replacement, note the orientation of the original coupling – the “S” and “N” sides are not interchangeable. Verify that both hub bores and mounting methods match the original before installation. Follow the equipment manufacturer’s alignment and torque specifications.
Available from Stark Industrial Products for compressor and industrial equipment service.

















