CAT 586-7419 BEARING-CONE-GD

CAT 586-7419 YM is a Caterpillar genuine tapered roller bearing inner race (commonly known as a “tapered sleeve”), used in double-row tapered roller bearings. It is suitable for heavy-duty transmission components such as drive axles and final drives, and is used in conjunction with the outer ring and roller assembly to withstand radial and bidirectional axial loads. The following is precise original part information:

Core Technical Parameters
Item Details
Part Model: CAT 586-7419 (5867419) YM Tapered Roller Bearing Inner Race (Single Inner Race, Not an Assembly), weighing approximately 1.2 kg (2.65 lb), suitable for double-row tapered roller bearings, used in conjunction with the outer ring and roller cage assembly.

Core Material: High-carbon chromium bearing steel (52100/SUJ2), integrally hardened, hardness HRC 60-64, raceway surface precision ground, roughness Ra≤0.4 μm, excellent wear resistance and fatigue resistance.

Key Dimensions Inner diameter 100 mm (3.937 in), outer diameter 135 mm (5.315 in), inner ring width 32 mm (1.260 in), fillet radius 2 mm, cone angle 15°, suitable shaft diameter tolerance H7, outer ring fit tolerance h6.
Compatible bearing assemblies: Matches CAT double row tapered roller bearing assemblies (such as 439-7584, etc.), with inner ring and roller line contact to ensure even load distribution and stable operation under heavy load conditions.
Compatible machine types: CAT 336D2/349D2 excavators (drive axle main reducer), 980K/988K loaders (differential half shaft), 140M graders (final drive planetary carrier), and other heavy-duty construction machinery.
Supporting parts: Suitable for bearing outer ring 439-7585, roller assembly 586-7418, lock nut. 6V-7853, Adjusting Shim 8T-4127 Core Functions and Structural Features:

Heavy-duty Bearing Adaptability: The tapered raceway design forms line contact with the rollers, enabling the transmission and bearing of radial and bidirectional axial heavy loads. Suitable for composite load conditions such as drive axles and differentials, ensuring precise positioning and stable support of the transmission system.

High-Precision Fit: The inner ring’s inner diameter is interference-fitted with the shaft (H7 tolerance), and the outer diameter precisely fits the rollers, controlling radial clearance to 0.02-0.04 mm, reducing vibration and noise, improving operational accuracy, and adapting to stable transmission under heavy loads.

Wear Resistance and Fatigue Resistance: High-carbon chromium bearing steel is integrally hardened, and the raceway is precision ground, reducing frictional loss between the rollers and the raceway. Suitable for low-to-medium speed and high-frequency impact conditions, extending the service life of the bearing assembly.

Easy Installation: Rounded corners at both ends facilitate hot-fitting with shaft and roller assemblies, preventing assembly scratches. Suitable for batch repair and replacement processes, improving operational efficiency.