Description
CAT 586-6826 Cone Tapered Roller Bearing
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The CAT 586-6826 is a Caterpillar genuine YM-marked tapered roller bearing inner ring (BEARING INNER RACE-CONE ROLLER), used in conjunction with the 586-6840 outer ring and roller assembly. It is suitable for heavy-duty rotating components such as final drives and differentials in heavy machinery, providing precise guidance and load transfer, and is suitable for high-frequency vibration and shock conditions in Cat® applications… The following are key information.
Core Technical Parameters
Item Details
Part Model: CAT 586-6826 (YM region compatible tapered roller bearing inner ring, single piece)
Material: High carbon chromium bearing steel (GCr15), quenching hardness HRC60-64, raceway ultra-precision ground, surface rust-proof treatment, fatigue life ≥10000 working hours
Key Dimensions: Inner diameter approx. 120mm, outer diameter approx. 180mm, width approx. 45mm, inner ring raceway cone angle approx. 10°, compatible with 586-6840 outer rings, line contact with rollers
Single Weight: Approx. 3.8kg (8.4 lbs)
Compatible Models: Final drive planetary carrier bearings, differential main reducer 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℃, raceway surface roughness Ra≤0.08μm, resistant to vibration and alternating loads.
Structure and Core Functions
Load Transfer and Guidance: Tapered raceways make line contact with the rollers, efficiently transferring radial and bidirectional axial loads, adapting to heavy-duty composite forces. The cage precisely positions the rollers, avoiding skewed friction and reducing transmission losses.
Shaft Diameter Matching and Positioning: The inner ring has an interference fit with the shaft (0.01-0.03mm), ensuring no radial runout during operation, guaranteeing the coaxiality of transmission components, and preventing abnormal noise and wear.
Heavy-Duty Adaptation Optimization: The YM-marked version is optimized for specific regional operating conditions, with higher raceway precision and surface quality, suitable for dusty, muddy, and high-temperature environments, extending the overall bearing life.
Suitable Scenarios and Installation/Maintenance Points
Suitable Scenarios: Compatible with 586-6840 outer rings, used in heavy-duty rotating parts of final drives, differentials, and gearboxes in large loaders, mining trucks, bulldozers, etc., suitable for harsh working conditions such as mining and infrastructure projects.
Installation Specifications: Clean the journal and inner ring surfaces, ensuring they are free of burrs, oil, and rust; heat-fit (inner ring heated to 80-90℃) or cold-press into the shaft. Do not forcefully strike to avoid damaging the raceway.
When assembling with roller assemblies, ensure good raceway fit. Add CAT 5K-8591 grease according to the equipment manual, filling to 1/3-1/2 Cat®… of the bearing cavity.
Maintenance Recommendations: Check bearing temperature (≤80℃) and noise every 500 working hours. If abnormal, disassemble and inspect for raceway wear and peeling, replacing the bearing promptly.
Regularly inspect the seals to prevent grease leakage and contaminant entry. Replenish or replace the grease every 2000 working hours. Take rust prevention measures when storing for extended periods.
