CAT 583-4748 BEARING-OUTER-GD

CAT 583-4748 YM is a Caterpillar genuine tapered roller bearing outer ring (outer ring bearing ring), commonly used in the drive axles, gearboxes, or final drive components of loaders, bulldozers, and other equipment. It is compatible with CAT 950G/966G loaders, D6R/D7R bulldozers, and other models. Working in conjunction with the inner ring and roller assembly, it bears radial and unidirectional axial loads, ensuring bearing operational accuracy and lifespan.

Core Technical Parameters

Item Details
Part Model: CAT 583-4748 YM Tapered Roller Bearing Outer Ring, suitable for corresponding bearing assemblies. No official direct replacement model; aftermarket reference: 5834748.

Material: Bearing steel chromium-molybdenum alloy (AISI 52100), quenched and tempered, hardness HRC 60-64, surface precision ground, raceway roughness Ra≤0.4μm, core hardness HRC 30-45, possessing high wear resistance and fatigue strength, suitable for heavy-duty applications.

Key Dimensions: Inner diameter 150mm, outer diameter 180mm, width 25mm, raceway cone angle 12°, flange thickness 5mm. Suitable for corresponding bearing roller diameter and length. Dimensional accuracy conforms to ISO 3006 standard P6 grade, radial runout ≤0.015mm.

Compatible Models: CAT 950G/966G loaders, D6R/D7R This product is used in bulldozers and 420F backhoe loaders, specifically for the outer ring of the tapered roller bearing in the drive axle main reducer, gearbox output shaft, and final drive. It is used in conjunction with the corresponding inner ring and roller assembly.

Performance Characteristics: The bearing steel is impact-resistant and wear-resistant. Precision-ground raceways ensure smooth roller rolling, making it suitable for heavy-load and vibration conditions. It bears radial and unidirectional axial loads, preventing relative sliding between the bearing outer ring and the bearing housing, and ensuring the coaxiality and operational accuracy of transmission components.

Core Functions and Structure:

Load Bearing and Transmission: As the core component of the tapered roller bearing, the raceway contacts the rollers, evenly transmitting radial and unidirectional axial loads during equipment operation to the bearing housing. It is suitable for heavy-load conditions and avoids damage to parts caused by localized stress concentration.

Positioning and Guiding: The interference fit between the outer ring and the bearing housing achieves circumferential and axial positioning of the bearing outer ring on the bearing housing, preventing relative rotation between the outer ring and the bearing housing during operation. It also provides precise guidance for the rollers, ensuring bearing operational accuracy and reducing vibration and noise.

Wear Protection: High-hardness, high-precision raceways reduce friction and wear between the rollers and the outer ring, extending the overall bearing life, adapting to the long-term high-frequency operation requirements of equipment, and reducing maintenance costs.

Installation and Maintenance Points
Installation Specifications: Clean the outer ring raceway and bearing housing surface, removing oil, metal filings, and burrs. Check that the outer ring is free of cracks and deformation, the raceway is free of peeling and scratches, and the bearing housing dimensions meet tolerance requirements (interference 0.01-0.03mm).

Pressure Press Installation: Use a special press to smoothly press the outer ring into the bearing housing. Do not strike the outer ring end face to avoid damaging the raceway. After pressure pressing, check that the outer ring end face is flush with the bearing housing end face, without any misalignment.

After installation, check the fit between the outer ring and the bearing housing. Ensure there is no looseness or misalignment, and that rotation is smooth and without jamming, ensuring normal bearing operation.

Maintenance Recommendations:

Inspect every 2000 working hours: Check for wear and peeling on the outer ring raceway, and for rust and scoring on the bearing housing. If the outer ring raceway is damaged or the bearing housing is loose, replace the outer ring and repair the bearing housing immediately. Replace the corresponding roller assembly and grease.

When replacing, prioritize genuine 583-4748 YM bearing rings. Non-genuine parts may contain more material impurities or have insufficient dimensional accuracy, which can easily lead to abnormal bearing operation, increased vibration, and equipment failure.