1604-0761-00 Atlas Copco OEM Coupling

The 1604-0761-00 Atlas Copco Drive Coupler is an OEM elastomeric drive coupler used as the engine-to-airend connection on Atlas Copco XAS-series portable diesel air compressors and related industrial compressor packages. This coupler transmits full operational torque from the diesel engine flywheel to the rotary screw airend input shaft while absorbing the cyclical firing-pulse vibration produced by the diesel engine.

Atlas Copco XAS portable compressor model applications for the 1604-0761-00 include XAS 67, XAS 77, XAS 87, XAS 97, XAS 98, XAS 130, XAS 150, XAS 170, XAS 175, XAS 185, and the XAS 58-7 platform. The same coupler is specified across Atlas Copco U-series compressors including U130, U175, and U190, as well as Mixman D4 and Mixman D5 industrial units that share the Atlas Copco portable drive architecture. The coupling is also used in Brinkmann Estrich Boy concrete screed pumps (EC-450, DC-450, and DC-550) that incorporate Atlas Copco compressor packages as their air supply.

The elastomeric element compensates for the angular and parallel shaft misalignment that develops during normal operation, thermal expansion, and machine settling on uneven jobsite ground. This vibration isolation protects the airend bearings, shaft seals, and downstream drivetrain components from accelerated wear caused by uncontrolled torsional spikes passing through the drivetrain.

When to replace the 1604-0761-00: Symptoms of coupler failure include elevated vibration during loaded operation, audible knocking or rumbling from the bell housing area at startup or under load, visible cracking or hardening of the rubber element during inspection, and metallic debris around the coupling guard. A failed coupler that goes unreplaced will cascade into airend bearing damage that costs far more than the coupling itself.

Direct OEM Atlas Copco replacement requiring no modification. Install per the Atlas Copco service manual with verification of shaft alignment, key fit, and torque specification. Available from Stark Industrial Products with same-day shipping on in-stock orders and 24/7 phone support at (903) 768-1111 to confirm compressor model fitment before you order.