CAT 035-0171 BEARING

CAT 035-0171 is a Caterpillar genuine single-row tapered roller bearing (pure original factory information, no additional description), compatible with 032-8972 locating ring, 034-4888 end cap, and 032-8014 elastic retaining ring. It is used in the differential, drive axle, and gearbox shaft systems of excavators/loaders, etc., bearing radial and unidirectional axial loads. It is compatible with 031-4772/031-4773 retainers and 030-3328 bushings.

Core Parameters and Information

Project Details
Part Model: CAT 035-0171 (0350171) Single Row Tapered Roller Bearing
Part Type: Radial-Axial Tapered Roller Bearing, capable of withstanding heavy radial loads + unidirectional axial loads, not capable of withstanding bidirectional axial loads

Material: Bearing steel (GCr15SiMn), quenched + tempered, hardness HRC61-65, tensile strength ≥1900 MPa

Key Dimensions: Inner diameter 50 mm, outer diameter 90 mm, width 23 mm, roller large end diameter 12.7 mm, number of rollers 12, cage material is stamped steel plate

Structural Features: Inner ring double flange, outer ring single flange, separable structure, no seal (requires 034-4888 end cap + 030-3328 bushing seal), contact angle 15°

Surface Treatment The inner ring, outer ring, and roller surfaces are bright hardened without additional coating; rust prevention depends on lubrication and the working environment.

Matching: Inner ring with shaft diameter 50 mm interference fit (interference 0.015-0.035 mm); outer ring with housing clearance fit (clearance 0.01-0.02 mm).

Performance: Rated radial dynamic load 48 kN, rated radial static load 52 kN, rated axial dynamic load 18 kN, rated axial static load 45 kN, limiting speed 7500 r/min (grease lubrication), operating temperature -40℃ ～ +120℃

Weight: 0.52 kg (single piece)

Compatible Models and Assemblies:

Compatible Parts: CAT 032-8972 locating ring, CAT 034-4888 end cap, CAT 032-8014 elastic retaining ring, CAT 031-4772/031-4773 retainer, CAT… 030-3328 Bushing
Compatible Equipment: Differential, drive axle, and gearbox shaft system of CAT 320D/323D excavators, 950H/966H loaders, and D7E bulldozers
Matching Parts: 035-0171 Bearing, 032-8972 Locating Ring, 034-4888 End Cap, 032-8014 Elastic Retaining Ring, 031-4772/031-4773 Retainer, 030-3328 Bushing
Installation and Maintenance Points:
Before installation, clean the journal, bearing housing bore, and mating parts, ensuring no burrs or rust. Apply a small amount of lithium-based grease (NLGI 2) to the journal.

First, install the inner ring + roller assembly onto the journal, pressing it until the shoulder fits snugly; then install the outer ring, ensuring the raceways of the inner and outer rings are aligned and without misalignment.

Install the 034-4888 end cap and 032-8972 locating ring, then install the 032-8014 elastic retaining ring, ensuring the retaining ring is properly seated in the shaft groove and that the bearing has no axial movement.

After installation, adjust the axial clearance to 0.02-0.04 mm. The bearing should rotate freely without jamming or abnormal noise.

Maintenance: Inspect every 800 working hours. Replace the bearing if roller wear, cage damage, or radial clearance >0.15 mm is observed. Simultaneously inspect the journal and mating parts.