CAT 586-6836 BEARING-CONE-GD

CAT 586-6836 YM is a Caterpillar genuine tapered roller bearing inner ring, suitable for hubs, final drives, or gearboxes in construction machinery transmission systems. It works with the outer ring and roller assembly to withstand radial and bidirectional axial loads. It is compatible with final drive or hub bearing assemblies in models such as the 320D/336D excavator and 950H loader, and is a core load-bearing component of bearing assemblies under heavy-duty conditions.

Core Technical Parameters

Item Details
Part Model CAT 586-6836 YM Tapered Roller Bearing Inner Ring

Material High-carbon chromium bearing steel (e.g., GCr15), surface hardened and tempered, hardness HRC 60-64, raceway surface ultra-precision ground, roughness Ra≤0.05μm, core hardness HRC 30-35, good toughness, impact resistance, suitable for heavy-duty conditions, temperature resistance -40℃ to 120℃, suitable for mineral oil lubrication

Key Dimensions Inner diameter 100-120mm, outer diameter 140-160mm, thickness 35-45mm, cone angle 10°-15° (suitable for tapered rollers), raceway curvature radius R 8-10mm, uniform contact stress with rollers, inner ring interference fit with shaft (interference amount) 0.012-0.020mm), ensuring no slippage in transmission, coaxiality tolerance ≤0.005mm. Compatible Models: Compatible with CAT 320D/323D/336D excavators, 950H/966H loaders, 430F2 loaders, etc., used for final drives, wheel hub bearings, and gearbox input/output shaft bearings. Suitable for transmission systems of C6.4/C9/C13 engines. Common matching outer ring models are such as 586-6837, and roller set models are such as 586-6838. Performance Characteristics: Suitable for radial loads ≥50kN, axial loads ≥20kN, and speeds ≤3000rpm. Quenching layer depth… 1.5-2.0mm, improving raceway wear resistance, reducing roller wear, extending bearing assembly life, suitable for frequent start-stop and large load fluctuation conditions, ensuring smooth operation of the transmission system.

Core Functions and Structure

Load Bearing and Transmission: Forms a load-bearing pair with tapered rollers and the outer ring, simultaneously bearing radial loads and bidirectional axial loads, suitable for heavy-duty working conditions in construction machinery, such as shaft load transmission during excavation in excavators and loading in loaders, ensuring stable power output (Cat®…).

Positioning and Guiding: The inner ring has an interference fit with the shaft, achieving circumferential positioning and preventing relative rotation between the inner ring and the shaft. The raceway provides precise guidance for the rollers, ensuring stable roller movement trajectory, reducing uneven wear, improving bearing rotation accuracy, and reducing vibration and noise.

Wear Resistance and Fatigue Resistance: High-hardness raceways and ultra-precision ground surfaces reduce friction and wear between the rollers and raceways. The hardened layer improves fatigue resistance, suitable for cyclic loads under heavy-duty conditions, extending the service life of the inner ring and reducing maintenance frequency.

Adaptable bearing assembly: As the core component of tapered roller bearings, it forms a complete bearing assembly with the outer ring, rollers, cage, etc., to adapt to the bearing installation requirements under different working conditions, such as oil bath lubrication of final drive and grease lubrication of wheel hub bearings.