CAT 512-6466 CUP-RLR BRG-GD

CAT 512-6466 YM (5126466) is a Caterpillar genuine tapered roller bearing outer ring, suitable for hydraulic pumps, small transmission systems, etc. The following is purely accurate information (without additional description):

Core Parameters and Information

Item Details
Part Model: CAT 512-6466 YM Tapered Roller Bearing Outer Ring

Part Type: Tapered roller bearing outer ring (cup-shaped outer ring), used with the inner ring and roller assembly, bearing radial + bidirectional axial combined loads, used for hydraulic pump/gearbox input shaft support

Material: Bearing steel (chromium-molybdenum alloy steel), surface carburized and quenched, hardness HRC60-64, outer ring raceway precision IT5 grade, suitable for inner ring tapered surface fit and roller rolling

Key Dimensions: Inner diameter 62.00 mm, outer diameter 88.90 mm, width 15.88 mm, cone angle 10°15′, outer ring small end diameter 73.03 mm, outer ring large end diameter 82.55 mm, raceway radius of curvature 7.14 mm

Structural Features: Integral, non-separable outer ring with locating flange; raceway tapered, adapting to the tapered contact between the inner ring and rollers, used for interference fit positioning of the housing.

Compatible Structures: Suitable for small hydraulic pump spindles and gearbox input shaft bearing housings; can be matched with 512 series inner rings (e.g., 512-6465) to form a complete tapered roller bearing.

Applicable Operating Conditions: Medium to low speed (≤1800 r/min), medium to light load; suitable for hydraulic/transmission systems with -25℃ to 110℃, grease lubrication, and impact vibration; rated dynamic load 48 kN, rated static load 55 kN.

Compatible Models:
CAT 301.7CR/302.7D mini excavators (hydraulic main pump/pilot pump bearing housing)
CAT C1.5/C2.4 Engine-Mount Hydraulic Pump (Input Shaft Support Outer Ring)

CAT 242D Skid Steer Loader (Gearbox Input Shaft Tapered Roller Bearing Outer Ring)

CAT 303.5E2 Mini Excavator (Swing Motor Gearbox Bearing Housing)

Installation and Fitting Points:
The outer ring and bearing housing are interference fit (interference 0.010-0.020 mm), closely fitting the tapered surface of the inner ring to ensure load transmission and rotational accuracy.

Use a dedicated pressing tool to vertically press the bearing into the housing; do not strike the outer ring end face. After installation, the outer ring end face should fit snugly against the housing positioning step without misalignment.

Before installation, clean the outer ring raceway and bearing housing bore, checking for cracks in the outer ring and no peeling/pitting on the raceway, ensuring dimensions meet tolerance standards.

After assembly with the inner ring and roller assembly, axial movement is limited by the end cap/circlip, and radial positioning is achieved by the bearing housing bore. After assembly, the assembly rotates freely without jamming, with axial movement ≤0.03 mm.

After installation, adjust the bearing preload according to the manual to ensure the preload meets the standard, avoiding excessive or insufficient clearance that could lead to premature wear or overheating.