CAT 032-9057 BEARING

CAT 032-9057 is a Caterpillar genuine single-row deep groove ball bearing (pure original factory information, no additional description), compatible with 032-8972 locating ring and 032-8014 elastic retaining ring, used in the transmission system and travel mechanism shaft of excavators/loaders and other equipment, bearing radial loads, and compatible with 031-4772/031-4773 retainers and 030-3328 bushings.

Core Parameters and Information

Item Details
Part Model: CAT 032-9057 (0329057) Single Row Deep Groove Ball Bearing

Part Type: Radial Deep Groove Ball Bearing, primarily bearing radial loads, capable of withstanding small amounts of bidirectional axial loads

Material: Bearing steel (GCr15), quenched and tempered, hardness HRC60-64, elastic modulus 208 GPa, tensile strength ≥1800 MPa

Key Dimensions: Inner diameter 52 mm, outer diameter 65 mm, width 9 mm, ball diameter 4.762 mm, number of balls 16, cage outer diameter 57.5 mm, inner ring width 9 mm, outer ring width 9 mm

Structural Features: Outer ring with retaining groove + retaining ring, stamped steel plate cage on both sides, no sealing ring (open type)

Surface Treatment: Inner ring, outer ring, and rolling elements are bright quenched, without additional coating; rust resistance depends on the working environment

Match: Inner ring and shaft diameter 52 mm Interference fit (interference 0.01-0.03 mm), clearance fit between outer ring and housing (clearance 0.01-0.02 mm)

Working performance: Rated radial dynamic load 12.5 kN, rated radial static load 8.2 kN, limiting speed 10000 r/min (grease lubrication), operating temperature -40℃ ～ +120℃

Weight: 0.05 kg (single piece)

Compatible models and assemblies:

Compatible parts: CAT 032-8972 locating ring, CAT 032-8014 elastic retaining ring, CAT 031-4772/031-4773 retainer, CAT 030-3328 bushing

Compatible equipment: CAT 515/525 wheeled timber harvester, D7E/D7E LGP bulldozer, 583T/587T Pipe Laying Machine Transmission System and Traveling Mechanism Shaft System

Supporting Parts: 032-9057 Bearing, 032-8972 Locating Ring, 032-8014 Elastic Retaining Ring, 031-4772/031-4773 Fixing Device, 030-3328 Bushing

Installation and Maintenance Points

Before installation, clean the journal and bearing housing bore, ensuring no burrs or rust remain. Apply a small amount of lubricating grease (lithium-based grease, NLGI 2).

Heat the inner ring using the hot fitting method (oil temperature 80-100℃) and then fit it onto the journal. After cooling, ensure the inner ring and shaft are interference-fitted, guaranteeing the inner ring end face fits snugly against the shaft shoulder.

Install the 032-8972 locating ring and 032-4888 end cap, then install the 032-8014 elastic retaining ring, ensuring the retaining ring is firmly seated in the shaft groove and the bearing does not move axially.

After installation, check that the radial clearance is 0.01-0.02 mm, the axial runout is ≤0.05 mm, and the rotation is smooth and without jamming.

Maintenance: Check every 1000 working hours. Replace the bearing if abnormal noise, increased vibration, or wear (radial clearance >0.1 mm) occurs. Simultaneously check the condition of the journal and mating parts.