ACH4NN Reich Arcusaflex Drive Coupler

The ACH4NN Reich Arcusaflex Drive Coupler is an OEM coupling from the Reich ACH series, size class 4. This mid-range Arcusaflex coupling serves industrial compressors, generators, and pump drives where moderate to heavy torsional damping is required between the engine or motor and the driven equipment.

The ACH4 size class sits in the middle of the Arcusaflex ACH range, handling more torque than the ACH3 but less than the larger ACH5 and above. This is one of the more specified Arcusaflex sizes for mid-range portable compressors and stationary industrial equipment in the 50-150 HP power range.

The ACH4NN is a direct replacement for equipment originally fitted with this coupling. Clean and inspect both shafts, verify keyway condition, and follow the equipment manufacturer’s alignment procedure during installation.

Stark Industrial Products stocks ACH-series Arcusaflex couplers across all common size classes.