BJ-1333-42 Ingersoll Rand OEM Drive Coupler

The BJ-1333-42 Ingersoll Rand OEM Drive Coupler is a Lord BJ-series coupling for IR portable air compressor platforms. The BJ-1333 coupling family serves several IR portable models, with each variant matched to a specific compressor configuration.

Lord BJ couplers use a bonded elastomeric element designed for engine-driven equipment. The BJ-1333-42 absorbs the diesel engine’s firing-pulse vibration before it reaches the compressor airend, extending the service life of bearings and mechanical seals that are sensitive to vibratory loads. In rental fleet service where IR portables accumulate high hours quickly, maintaining coupler integrity prevents the cascading failures that start with unchecked vibration.

The BJ-1333-42 is a direct OEM replacement. Verify the exact BJ part number, as other BJ-1333 variants have different stiffness characteristics. Install per IR’s alignment procedure.

In stock at Stark Industrial Products for IR portable compressor maintenance.