CAT 533-8246 Spherical Roller Bearing

CAT 533-8246 is a Caterpillar genuine single-row cylindrical roller bearing, suitable for the gearboxes and drive axles of wheel loaders, excavators, and other equipment. The following is precise original part information:

Core Technical Parameters
Item Details
Part Model: CAT 533-8246 (5338246) Single-row cylindrical roller bearing, weight approximately 0.85 kg (1.87 lb), suitable for low-to-medium speed, radial heavy-duty conditions

Core Material: Bearing steel (high carbon chromium bearing steel), cage is made of stamped steel plate, rollers are made of high-purity bearing steel, precision grade is P6, high rotational accuracy, suitable for heavy-duty operating environments

Key Dimensions: Inner diameter 65 mm (2.559 in), outer diameter 120 mm (4.724 in), width 23 mm (0.906 in), inner diameter tolerance P6, outer diameter tolerance P6, suitable for shaft diameter 65 mm (tolerance h6)

Structural Features Single-row, flangeless cylindrical roller bearing with an outer ring equipped with a grease nipple. The cage guides the rollers for smooth operation, suitable for radial loads and can withstand certain impact loads. Suitable for gearbox output shafts and differentials.

Compatible Machines: CAT 950G loader (gearbox axle 2), 320C excavator (travel drive axle), 140H grader (rear axle differential), etc.

Accessories: Compatible bearing housing 4N-0532, lock nut 8T-4127, seal 436-7781
Core Functions and Structural Features:

Radial Heavy-Duty Adaptability: The cylindrical roller structure can withstand large radial loads (dynamic load approximately 98 kN, static load approximately 125 kN), suitable for heavy-duty components such as gearboxes and drive axles, ensuring stable power transmission.

Convenient Lubrication: The outer ring is equipped with a grease nipple, allowing for regular grease replenishment, reducing friction and wear between the rollers and raceways, suitable for long-term operation under harsh conditions in construction machinery.

Secure Installation: The compact structure of the stamped steel plate cage ensures smooth roller operation after installation, suitable for low-to-medium speed (≤2000 rpm) conditions, reducing vibration and noise, and improving equipment smoothness.

Durable and Fatigue-Resistant: Made of high-carbon chromium bearing steel, quenched and tempered, with a surface hardness of HRC 60-64, exhibiting excellent fatigue resistance, suitable for the high-frequency, heavy-load working environment of engineering machinery.

Installation and Maintenance Points
Installation Specifications: Clean the journal and bearing housing bore, removing burrs and oil. Before installation, the bearing can be heated to 80-100℃ for hot installation, or cold-pressed in using a special press, ensuring the bearing end face fits snugly against the shaft shoulder.

Journal surface roughness Ra≤0.4 μm, hardness≥HRC 58. After installation, the bearing radial clearance should be 0.015-0.03 mm to ensure flexible operation.

After installation, inject an appropriate amount of grease. During trial operation, ensure there is no jamming or abnormal noise, and that the bearing temperature is normal with no abnormal temperature rise.

Maintenance Recommendations:

Replenish grease every 500 working hours. The amount replenished should be just enough to cause a small amount of grease to overflow from the seal; avoid excessive grease, which can lead to bearing overheating.

Regularly check the bearing’s operating noise and temperature. If any abnormalities are observed, stop the machine immediately for inspection to prevent bearing damage and equipment malfunction.