The 35820281 Ingersoll Rand OEM Coupler is a metallic-style drive coupling used in Ingersoll Rand DM-series rotary blasthole drilling rigs including the DM-45, DM-50, and DM-L. This heavy-duty coupling connects the engine or power module to the rotary head drive system, handling the high-torque loads and severe vibration inherent in drilling operations.
Ingersoll Rand drilling rigs like the DM-series operate in some of the most demanding conditions in mining and quarry environments – constant dust exposure, extreme temperatures, high rotational loads, and continuous impact from rock contact. The drive coupler in these machines must withstand forces far beyond what typical compressor couplers see. A worn or failing coupler in a drill rig can lead to costly downtime, damaged driveline components, or unsafe operating conditions.
Part number 35820281 is the OEM-specified replacement for the factory-installed coupling. It matches the original dimensional specifications, material grade, and load rating. During installation, follow the rig manufacturer’s alignment procedure exactly – drilling rig couplers are less forgiving of misalignment than lighter-duty applications. Inspect all mating hardware and replace any worn fasteners.
Stark Industrial Products supplies OEM drilling rig couplers with fast shipping to mine sites and heavy equipment shops.

















