CAT 586-6840 BEARING-CUP-GD

CAT 586-6840 is a Caterpillar genuine YM-marked tapered roller bearing outer ring (BEARING OUTER RING-CONE ROLLER). It is suitable for heavy-duty rotating components such as final drives, differentials, or gearboxes in heavy machinery. It provides rigid support for the bearing inner ring and rolling elements, withstands radial and bidirectional axial loads, and is suitable for high-frequency vibration and shock conditions, ensuring stable operation of the transmission system. The following are key information.

Core Technical Parameters

Item Details
Part Model: CAT 586-6840 (YM region compatible tapered roller bearing outer ring, single piece)
Material: High carbon chromium bearing steel (GCr15), quenching hardness HRC60-64, surface treated with ultra-precision grinding and rust prevention, fatigue life ≥10000 working hours
Key Dimensions: Inner diameter approx. 180mm, outer diameter approx. 250mm, width approx. 45mm, outer ring raceway cone angle approx. 10°, flange thickness ≥5mm, compatible with corresponding tapered roller bearing inner ring and roller assembly
Single Weight: Approx. 6.2kg (13.7 lbs)
Compatible Machines: Final drive planetary carrier bearings, differential main reducer bearings, and gearbox second shaft support bearings for CAT 992K/994K loaders, 777G mining trucks, D11T bulldozers, etc.
Performance Characteristics Rated radial load ≥320kN, allowable speed ≤2000rpm, operating temperature -40℃ to +120℃, suitable for heavy-duty, vibration and shock conditions, raceway surface roughness Ra≤0.08μm, reducing rolling friction loss.

Structure and Core Functions

Rigid Support and Load Transfer: High-carbon chromium bearing steel, quenched, possesses high hardness and wear resistance, providing stable support for the inner ring and rollers, evenly transferring radial and bidirectional axial loads to the bearing housing, preventing deformation or cracking caused by localized stress concentration (Cat®…).

Raceway Guiding and Friction Reduction: Precision-machined tapered raceways and flanges guide the rollers to roll stably, reducing friction and wear. When used with grease, it reduces transmission system energy consumption and improves mechanical efficiency.

Positioning and Anti-migration: The outer ring and bearing housing have an interference fit (0.02-0.05mm), ensuring no radial movement of the bearing during operation, guaranteeing the coaxiality of transmission components, and preventing abnormal noise and wear.

Suitable for heavy-duty conditions: The YM marking version is optimized for heavy-duty conditions in specific areas, with higher raceway precision and surface quality, making it suitable for harsh environments such as dust, mud, and high temperatures, and extending the overall service life of the bearing.