CAT 586-7646 BEARING-CUP-GD

CAT 586-7646 (5867646) YM is a Caterpillar original single-row tapered roller bearing outer ring (bearing housing ring), suitable for gearbox/drive axle differential side bearings. The following is purely precise information (no additional description): Cat®…

Core Parameters and Information

Item Details
Part Model: CAT 586-7646 YM Single-row Tapered Roller Bearing Outer Ring (Bearing Housing Ring)

Part Type: Tapered roller bearing outer ring, suitable for inner ring + roller assembly of the same model, withstands radial + unidirectional axial loads, suitable for gearbox/drive axle differential shaft systems, outer ring with locating groove, separable design

Material: Chromium bearing steel GCr15, quenching hardness HRC60-64, ultra-fine ground surface (Ra≤0.1μm), raceway contact fatigue strength ≥1500MPa

Key Dimensions: Inner diameter 95.25mm (3.7500in), outer diameter… 146.05mm (5.7500in), width 29.37mm (1.1563in), cone angle 10°, locating groove width 5.0mm, depth 1.5mm, chamfer 1.5×45°

Structural Features: Separable outer ring, raceway with conical surface, forming line contact with the inner ring rollers, suitable for grease lubrication, limiting speed 4800rpm, rated dynamic load 85.0kN, rated static load 102.0kN, clearance class C3

Compatible Structures: Loader/excavator gearbox second shaft bearing seat ring, drive axle differential side bearing outer ring, used with 586-7645 inner ring + roller assembly

Applicable Working Conditions: Medium-high speed, medium-heavy load rotating shaft systems of construction machinery gearboxes/drive axles, suitable for continuous impact and variable load conditions, oil temperature -30℃ to 120℃

Compatible Models and Assemblies:

Excavator: CAT 320, 323 (320 gearbox second shaft bearing assembly, 323 drive axle differential side bearing assembly)

Loaders: CAT 950, 962 (950 gearbox intermediate shaft bearing assembly, 962 drive axle differential bearing assembly)

Compatible Assemblies: 320 gearbox second shaft bearing assembly, 950 gearbox intermediate shaft bearing assembly, 323 drive axle differential side bearing assembly

Installation and Fitting Points: The outer ring should have a transition fit with the seat bore (clearance 0.005-0.015mm). Use a special pressing tool for cold pressing installation. Do not strike to prevent raceway deformation and surface scratches.

Before installation, clean the seat bore and outer ring raceway, ensuring they are free of burrs, oil, and rust. Inspect the outer ring for cracks, pitting, and peeling, and ensure the locating groove is intact.

After installation, radial runout should be ≤0.02mm, and axial clearance after assembly with the inner ring and rollers should be 0.05-0.10mm. Operation should be smooth without jamming or abnormal noise. The amount of grease added should be 1/3-1/2 of the bearing cavity volume (NLGI Grade 2 lithium-based grease).

Disassembly should be done using a dedicated puller, applying force evenly to avoid damaging the bearing seat. Before reuse, check the raceway wear (replace if >0.10mm).