Bearings and bushings carry the rotating and sliding loads throughout the engine and its driven equipment, separated from the surfaces they support by a film of oil only microns thick. This group covers main and connecting rod shells, camshaft bearings, thrust washers, small-end and rocker bushings, and rolling element bearings in pumps, alternators and fan drives. CAT supplies main and rod bearings in standard and undersize grades to suit crankshafts that have been reground. Plain bearings depend on a pressurised oil film, so premature failure almost always traces back to lubrication rather than the bearing itself; inspecting a failed shell usually identifies the cause before the replacement is fitted.
AMS Parts supplies a wide range of bearings & bushings components for CAT engines used in power generation, marine, and industrial applications. Browse the full range below, or contact us for specific requirements.
Browse our range of Bearings & Bushings parts below. Use the search bar above to find a specific part number, or request a quote.
They identify the size grade — standard or a specific undersize. The grade must match the journal dimension after any regrinding, so check before fitting.
Premature failure points to a cause rather than the part. Oil contamination, low pressure, incorrect assembly clearance, or a journal outside specification are the usual findings.
No. Shells take a set in service and the overlay wears. New shells are fitted whenever a bearing cap is disturbed.
