Overview – BEARING SHELLS (CRANKSHAFT THRUST SHELLS) C3944163 Series
If you run Cummins crankshaft main and thrust bearing service, the Cummins BEARING SHELLS (CRANKSHAFT THRUST SHELLS) C3944163 and its series variants give you flexible sourcing without compromising fit.
Parts Characteristics
A set of crankshaft bearing shells, including the thrust halves that control fore-and-aft play of the crank. The shells carry the rotating load on a thin, hardened surface and the thrust faces stop the crank walking under clutch and load forces, so their condition sets the engine’s internal clearance.
Applicable Models & Applications
Used in Cummins engine overhauls specifying this bearing and thrust size. Confirm the bearing grade and thrust width against your crank specification – the same engine can call for different clearance grades.
Maintenance & Replacement
Measure crank clearance rather than fitting bearings by guess. The correct grade is decided by the journal size after grinding, and fitting the wrong clearance shells either knocks or starves the journal – both end in a spun bearing.
Never mix bearing grades within one engine. Running one tighter shell among loose ones loads that journal alone, and it is the one that fails first under load.
Clean the journals and oil passages thoroughly before the bottom end goes together. A single grit particle trapped under a shell scores the journal on the first start and undoes the whole overhaul.
Torque the main caps in sequence and to specification, and re-check thrust end-float. A cap pulled up unevenly distorts the bore and the new shell never seats true.
Price Reference (USD)
For planning purposes, allocate USD 15 to USD 60 per BEARING SHELLS (CRANKSHAFT THRUST SHELLS) C3944163, excluding local import duties.
Value & Service
We supply brand-new bearing and thrust shells to the grade your crank calls for, so the bottom end goes back together to specification.
This BEARING SHELLS (CRANKSHAFT THRUST SHELLS) is supplied alongside the following series references: C3978822, C3978824. Any of these can be quoted on request.
Ordering the Cummins BEARING SHELLS (CRANKSHAFT THRUST SHELLS) C3944163 from Racer Machinery means dealing with a specialist who understands Engine Parts and cross-references every part number for you.
