ACT4WN Reich OEM Drive Coupler

The ACT4WN Reich Arcusaflex Drive Coupler is an OEM coupling from the Reich ACT series, size class 4 with a flanged hub on one side and a standard keyway bore on the other. This mid-range coupling serves portable compressors and industrial equipment where the driving and driven shafts require different connection interfaces.

The flanged hub side connects to engine flywheel housings or SAE adapter plates, while the keyed bore side mounts to the compressor or pump shaft. ACT4 couplers handle equipment in the 75-200 HP range, providing effective torsional damping for engines and motors powering mid-range industrial machinery.

The two hub sides are not interchangeable – verify correct orientation during installation. Follow the equipment manufacturer’s alignment and torque specifications.

Stark Industrial Products stocks ACT4 Arcusaflex couplers in multiple hub configurations.