The ACH5.1NT Reich Arcusaflex Drive Coupler is a heavy-duty OEM coupling from the Reich ACH series, size class 5.1. ACH couplers provide higher torque capacity than the standard-duty ACT series at the same nominal size, making them the correct choice for equipment with heavier driveline loads.
The ACH5.1 serves industrial compressors, generator sets, and heavy equipment where the torque and vibration demands exceed ACT-series ratings. The elastomeric element provides effective torsional damping for large diesel engines and high-horsepower electric motor drives, protecting downstream rotating components from vibratory fatigue.
The ACH5.1NT is a direct replacement for equipment originally specified with this coupling. Do not substitute with an ACT5 variant, as the torque ratings differ between ACT and ACH series. Install per the equipment manufacturer’s alignment procedure.
Stark Industrial Products stocks ACH5.1 Arcusaflex couplers for heavy industrial applications.









