CAT 462-4651 BEARING-ROLL

CAT 462-4651 is a single-row cylindrical roller bearing specifically designed for Caterpillar drive axle differentials and transmission shafts. It features a flanged inner ring and a separable outer ring, primarily bearing radial loads. Suitable for medium-to-high speed and medium-to-heavy load conditions, it boasts high rigidity, low friction, and easy installation. The following are the core parameters:

Core Parameters
Item Details
Basic Attributes
Model 462-4651, Single-row cylindrical roller bearing (NU type, single flanged inner ring, separable outer ring), bearing pure radial loads, suitable for linear speeds ≤15m/s, used in drive axle differentials, transmission shafts, and driveshaft support components.

Compatible Models
Cat 950, 962 loaders, D6, D7 bulldozers, 770, 772 mining dump trucks, compatible with C13, C15 engine transmission systems. Two bearings are required per differential end of each machine.

Material and Manufacturing Process
Inner Ring / The outer ring is made of high-carbon chromium bearing steel (GCr15SiMn), integrally hardened (HRC 60-64); the cage is made of phenolic resin/stamped brass, and the rollers are made of GCr15 with surface strengthening treatment; operating temperature -30℃ to +120℃, oil lubrication required (viscosity ISO VG 46-68).

Key Dimensions: Outer diameter 146.05mm (5.75in), inner diameter 88.90mm (3.5in), width 38.10mm (1.5in), roller diameter 9.525mm, quantity 12, weight approx. 1.2kg, shaft clearance 0.02-0.04mm.

Functional Parameters: Radial rated dynamic load 120kN, radial rated static load 150kN, limiting speed 6000rpm (oil lubrication), interference fit mounting (shaft tolerance m6, hole tolerance H7), compatible with journal surface roughness. Ra≤0.8μm

Compatible Parts: Adapts to differential housing 462-4652, gear shaft 462-4653. Installation requires a special puller. It is recommended to use with gear oil. Replace the drive axle filter element regularly.

Alternative Models: Can replace older cylindrical roller bearings such as 310-6158 and 141-5951.

Installation and Maintenance Points:
Preparation before installation: Clean the mounting hole and journal surface, removing burrs, oil, and metal debris; check that the bearing rollers are intact and undamaged, and the cage is undamaged; measure the journal diameter and mounting hole diameter to ensure the interference fit is within specifications; the journal surface must be hardened (HRC≥58) and the surface roughness must meet requirements.

Installation Steps: Heat the bearing inner ring to 80-100℃ (hot mounting method), or use a special press to smoothly press it into the journal (pressing force ≤20kN). Do not strike the bearing inner or outer rings. Install the outer ring, ensuring the shaft and bearing coaxiality is ≤0.03mm. Install the differential housing or transmission components, tightening the fixing bolts to the specified torque (e.g., differential end cover bolt torque 80-100N・m).

Maintenance and Replacement: Check the bearing’s operating condition every 3000 hours, listening for abnormal noises and measuring the temperature. Check for metal debris in the oil each time you change the drive axle oil. Replace the bearing immediately if the bearing rollers are worn, the cage is damaged, or the radial clearance exceeds the limit.