CAT 583-3208 120.65mm Inner Diameter Cone Bearing

CAT 583-3208 is a Caterpillar genuine YM series tapered roller bearing inner ring (tapered sleeve), suitable for final drive and drive axle tapered roller bearing assemblies in heavy equipment such as excavators and loaders. It is used in conjunction with the corresponding outer ring (cup sleeve) to bear radial and bidirectional axial loads, ensuring stable operation of the transmission system. The following are key information.

Core Technical Parameters

Item Details
Part Model: CAT 583-3208 (YM Series Tapered Roller Bearing Inner Ring, Single Unit)
Material: GCr15 chromium bearing steel, hardened to HRC 60-64, raceway precision ground, surface roughness Ra≤0.4μm, wear-resistant and fatigue-resistant

Key Dimensions: Inner diameter approx. 80mm, outer diameter approx. 115mm, width approx. 28mm, cone angle 10°-15°, suitable for 80mm shaft diameter, paired with outer ring for installation

Single Weight: Approx. 1.18kg (2.60 lbs)

Compatible Models: Final drive gearboxes, drive axle differentials, wheel-end tapered roller bearing assemblies for CAT 320D/323D excavators, 950H/966H loaders, etc.

Performance Characteristics: Suitable for -40℃ to + Operating at 120℃, rated dynamic load ≥78kN, rated static load ≥92kN, impact and vibration resistant, suitable for heavy-duty continuous operation.

Structure and Core Functions:

Matching and Load Bearing: Forms a tapered roller bearing assembly with the corresponding outer ring (cup sleeve), simultaneously bearing radial loads and bidirectional axial loads of heavy equipment, suitable for complex stress conditions in transmission systems.

Positioning and Guiding: The tapered raceway guides the rollers to roll in an orderly manner, ensuring rotational accuracy, reducing friction loss, improving transmission efficiency, and preventing axial movement of components.

Wear-Resistant and Durable: Made of hardened chromium steel and precision-ground raceways, possessing high hardness and low roughness, extending the service life of the bearing assembly, suitable for harsh working conditions.

Assembly and Fit: Standardized tapered design allows for adjustment of the inner ring and shaft clearance, optimizing bearing preload and ensuring operational stability.

Compatible Machine Models and Application Scenarios

Compatible Equipment: Final drive gearboxes, drive axle differentials, and wheel end supports for CAT 320D and 323D excavators, 950H and 966H loaders, etc.

Core Application: As a core component of tapered roller bearings, paired with the outer ring, it provides radial and axial load support for the rotating shaft of the transmission system, suitable for heavy-duty and vibration-impact conditions, ensuring stable equipment movement and operation.