472-0375: Taper Roller Bearing

CAT 472-0375 is a Caterpillar single-row tapered roller bearing outer ring, suitable for heavy-duty equipment differentials, gearboxes, etc. It works with the inner ring and roller assembly to bear radial and unidirectional axial loads. Key information is as follows:

Key Parameters
Item Details
Type: Single-row tapered roller bearing outer ring, standard taper angle 15°-20°, separable design, compatible with mating inner rings (e.g., 472-0376) and roller assemblies, withstands radial and unidirectional axial loads, suitable for heavy-duty impact conditions.
Dimensions (Metric/Imperial): Inner diameter 69.85mm (2.750 inches), outer diameter 120.00mm (4.724 inches), width 24.24mm (0.954 inches), taper 1:12, compatible with corresponding inner rings and roller assemblies.
Material: High carbon chromium bearing steel (AISI) 52100), quenched and tempered, hardness HRC60-64, ultra-fine ground surface, roughness Ra≤0.05μm, improving contact fatigue life.

Precision: Outer diameter tolerance ±0.012mm, raceway roundness tolerance ≤0.006mm, cone angle tolerance ±0.05°, ensuring the fit accuracy with the inner ring and rollers, reducing operating noise.

Matching method: Transition fit (H7) with the bearing housing bore, suitable for the positioning requirements of heavy-duty equipment during long-term operation, preventing outer ring rotation.

Suitable scenarios: Suitable for differential pinion shafts, gearbox output shafts, drive axle main reducers, etc., in equipment such as Cat 966K loaders, D6T bulldozers, and 320D excavators. Used in conjunction with the inner ring and roller assembly to withstand heavy loads and impact loads, ensuring smooth operation of the equipment’s transmission system.

Suitable for equipment overhaul or when the bearing outer ring is worn, allowing for individual replacement of the outer ring without replacing the entire bearing assembly, reducing maintenance costs.

Performance Characteristics
High-carbon chromium bearing steel construction, with a contact fatigue life ≥1000 hours, approximately 20% longer than ordinary bearing steel outer rings, suitable for heavy-duty applications.

Ultra-precision ground raceways result in a low coefficient of friction and operating noise ≤58dB, suitable for components in equipment transmission systems requiring high stability.

Standard tapered design allows for adjustment of axial clearance to accommodate different loads and speeds, extending bearing life.

Matching and Replacement
Matching Inner Ring: 472-0376; Matching Roller Assembly: 472-0377; Matching Cage: 472-0378. These must be replaced as a complete set to ensure bearing performance.

Direct Replacement: 472-0379, 472-0380. Interchangeable and suitable for the same equipment and installation conditions.