The ACT3NN Reich Arcusaflex Drive Coupler is an OEM coupling from the Reich ACT product line. The ACT series is the standard-duty Arcusaflex range, widely used across portable compressors, pumps, and general industrial equipment. Size class 3 with “NN” keyway bores is one of the most common Arcusaflex configurations in the compressor service industry.
ACT-series couplings differ from ACH-series in their torque rating and construction weight for the same nominal size – ACT couplings are optimized for lighter-duty applications while ACH couplings handle heavier loads. The ACT3NN serves equipment in the smaller portable compressor and light industrial range, where effective vibration damping is needed without the bulk and cost of a heavy-duty coupling.
This coupling is a direct replacement for equipment originally fitted with the ACT3NN. Verify the Arcusaflex model number exactly, as the ACT and ACH series are not interchangeable within the same size class.
In stock at Stark Industrial Products for compressor and industrial equipment service teams.

















