480-6604: Bearing-Aligning

CAT 480-6604 is a Caterpillar self-aligning spherical roller bearing, suitable for heavy-duty equipment transmissions and hinges. It automatically compensates for misalignment between the shaft and housing bore, and can withstand heavy radial loads and bidirectional axial loads. Key information is as follows:

Key Parameters
Item Details
Type: Self-aligning spherical roller bearing, double-row symmetrical spherical roller design, allows shaft misalignment angle ≤2° relative to housing bore, suitable for misalignment conditions, and can withstand radial + bidirectional axial loads (Cat® Parts)
Dimensions (Metric/Imperial): Inner diameter approx. 88.90 mm (3.5 inches), outer diameter approx. 152.40 mm (6.0 inches), width approx. 46.04 mm (1.8125 inches), suitable for matching corresponding journals and mounting space

Material: Inner/outer ring is made of chromium-molybdenum alloy steel, hardened and tempered, hardness… HRC60-64; Rollers are made of high-carbon chromium bearing steel, with ultra-precision ground surfaces and a surface roughness Ra≤0.2μm; the cage is made of stamped steel plate, improving roller guiding accuracy and operational stability.

Accuracy: Inner diameter tolerance ±0.01mm, outer diameter tolerance ±0.015mm, radial clearance C3 grade (0.02-0.04mm), suitable for thermal expansion compensation under heavy-load conditions.

Load Capacity: Dynamic load rating approximately 220kN, static load rating approximately 280kN, suitable for low-speed, heavy-load, and impact conditions, with a load capacity approximately 2.5 times higher than deep groove ball bearings of the same size.

Suitable Applications: Suitable for drive axle differentials, gearbox output shafts, boom hinge points, etc., in Cat 330D/336D excavators, 988H loaders, D11T bulldozers, and other equipment, used to compensate for misalignment caused by installation errors and component deformation, ensuring smooth operation of the transmission system.

Suitable for harsh working conditions such as mining and infrastructure construction. Replacement is used during equipment overhauls or bearing maintenance to prevent vibration, abnormal noise, and decreased transmission efficiency caused by bearing wear.

Performance Features: Double-row spherical roller design with strong self-aligning capability, compensating for shaft and housing misalignment of ≤2°, reducing bearing edge stress and extending service life.

Made of chromium-molybdenum alloy steel, professionally heat-treated, with high fatigue strength, extending bearing life by approximately 60% compared to ordinary carbon steel bearings, suitable for the long-term operation requirements of heavy equipment.

Stamped steel cage ensures high roller guiding precision, smooth operation, and reduced friction loss, conforming to Caterpillar equipment heavy-duty transmission standards.

Alternative Models: Direct replacements: 188-8697, 6V-0444, interchangeable, suitable for Cat® Parts in the same equipment and installation conditions.