22351720 Ingersoll Rand OEM Coupling

The 22351720 Ingersoll Rand Drive Coupler is an OEM elastomeric flexible coupling used as the engine-to-airend connection on Ingersoll Rand and Doosan P185 portable diesel air compressors. 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 and compensating for the angular and parallel shaft misalignment that develops during normal operation, thermal expansion, and machine settling on uneven jobsite ground.

Compressor model applications for the 22351720 include the Ingersoll Rand P185 and the Doosan-branded P185 portable diesel compressor built on the shared Ingersoll Rand and Doosan portable platform, as well as the JD 185 John Deere-engine configuration of the same 185 CFM portable class. These 185-class portable compressors are workhorses across construction sites, sandblasting operations, pipeline service, concrete drilling, and rental fleet inventories where compressor uptime drives jobsite economics and rental revenue.

The elastomeric coupling element isolates the airend bearings, shaft seals, and downstream drivetrain components from the cyclical torsional spikes that diesel engines generate during normal combustion. Without proper coupler condition, these uncontrolled torsional loads pass directly into the airend assembly and accelerate wear on every rotating component downstream of the connection. Replacing the coupler at scheduled service intervals protects the substantial investment in the airend, the diesel engine, and the assembled portable compressor package.

When to replace the 22351720: 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, deformation or set in the element profile, and metallic debris around the coupling guard. A failed coupler that goes unreplaced will quickly cascade into airend bearing damage that runs far more expensive than the coupler itself, plus the lost rental hours during the emergency repair.

The 22351720 is a direct OEM replacement requiring no modification to the engine, airend, or mounting hardware. Install per the Ingersoll Rand or Doosan service manual with verification of shaft alignment, key fit, and proper torque on the mounting bolts before returning the unit to service.

Direct OEM Ingersoll Rand replacement — not an aftermarket equivalent. 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.