CAT 003-7500 CUP

CAT 003-7500 is a Caterpillar genuine bearing outer ring (pure original factory information, no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 003-7500 (0037500) Outer Ring

Part Type: Double row self-aligning roller bearing outer ring, compatible with bearings with tapered bore inner rings, used to carry radial loads, suitable for shaft and bearing housing misalignment conditions

Material: Alloy structural steel (42CrMo), tempered and surface hardened

Key Dimensions: Inner diameter 215.00 mm (m6), outer diameter 280.00 mm, width 51.00 mm, chamfer 2×45°

Structural Features: Outer ring with spherical raceway, no seal ring, non-separable, transition fit with bearing housing (H7)

Surface Treatment: Raceway ultra-precision ground, outer cylindrical grinding, surface hardness HRC 60–64

Match Requirements: Fit tolerance with bearing housing H7, forming a standard rolling pair with the inner ring and rollers.
Operating temperature: -40℃ ～ +120℃
Rated load: Radial rated dynamic load of the compatible bearing is 208 kN, and the radial rated static load is 245 kN.
Weight: 3.85 kg
Compatible models and assemblies:
Excavators: CAT 323D2, 326D2, 329D2 (slewing bearing, travel gearbox input shaft bearing)
Loaders: CAT 950M, 962M, 966M (gearbox second shaft, drive axle differential bearing)
Matching parts: 003-7500 outer ring, 002-7343 bearing inner ring, roller assembly, cage, adapter sleeve
Installation and fitting points: Clean the bearing housing bore and outer ring, deburr and remove rust. The bearing housing bore roughness Ra≤1.6μm, dimensional tolerance H7.

For cold mounting, use a press to smoothly press the outer ring in; do not strike. For hot mounting, heat the outer ring to 80-100℃ and then quickly install it into the bearing housing.

Post-installation inspection: The coaxiality between the outer ring and the bearing housing should be ≤0.05 mm, the end face runout ≤0.03 mm, and there should be no deformation or scratches.

After assembly with the inner ring and rollers, ensure the radial clearance conforms to group C3 (0.032–0.055 mm).