CAT 465-8981 BEARING-RLR-GD

CAT 465-8981 (4658981) is a Caterpillar genuine YM series cylindrical roller bearing inner ring, suitable for heavy-duty transmission components such as gearboxes and final drives. The following is purely precise information (without additional description): Cat®…

Core Parameters and Information

Item Details
Part Model: CAT 465-8981 YM Cylindrical Roller Bearing Inner Ring

Part Type: Single-flange cylindrical roller bearing inner ring, compatible with NU/NJ series cylindrical roller bearings, bearing radial loads, used in gearboxes, differentials, and final drives

Material: Chromium-molybdenum alloy steel (SAE 52100), integrally hardened, hardness HRC60-64, raceway surface roughness Ra≤0.4μm, core hardness HRC30-45

Key Dimensions: Inner diameter 76.20mm (3.0000in), raceway diameter 95.25mm (3.7500in), width… 44.45mm (1.7500in), flange height 5.56mm, chamfer 1.0×45°, fit tolerance k6

Structural Features: Single flange positioning, compatible with separable cylindrical roller bearings, used with 465-8982 outer ring and 465-8983 roller cage, rated dynamic load 85kN, rated static load 120kN, operating temperature -40℃ to 120℃

Compatible Structures: Inner ring of gearbox second shaft bearing, inner ring of final drive planetary carrier bearing, installation interference 0.015-0.025mm

Applicable Working Conditions: Heavy-duty transmission parts, speed ≤3000rpm, radial load ≤60kN, suitable for impact loads, suitable for oil lubrication conditions

Compatible Models and Assemblies:

Loaders: CAT 950M, 962M, 980M (gearbox second shaft bearing assembly)
Bulldozers: CAT D6N, D7E (Final Drive Planetary Carrier Bearing Assembly)
Graders: CAT 140M, 160M (Differential Bearing Assembly)
Compatible Assemblies: 950M Gearbox Second Shaft Bearing Assembly, D6N Final Drive Planetary Carrier Bearing Assembly
Installation and Fitting Points:
The shaft diameter should be clean and free of burrs. Heated installation (oil temperature 80-100℃) or cold-pressed installation is recommended. Interference fit should be 0.015-0.025mm. Do not strike the retaining edge to avoid damaging the raceway.

Before installation, check the raceway for pitting and scratches. Inner diameter roundness ≤ 0.005mm, end face runout ≤ 0.01mm.

After assembly, the inner ring should not rotate relative to the shaft, and the coaxiality with the outer ring should be ≤ 0.01mm. Operation should be smooth and free of jamming or abnormal noise.

For disassembly, use a puller to remove the inner ring. Do not pry the retaining edge. When replacing, replace the inner ring + outer ring + roller cage as a complete set to ensure fitting accuracy.