CAT 154-0389 Crankshaft Bearing Cap

CAT 154-0389 C is a Caterpillar genuine heavy-duty self-aligning roller bearing assembly, commonly used in the hinged parts of the transmission or working devices of loaders and excavators. It can withstand heavy radial loads and bidirectional axial loads, and is suitable for certain misalignment conditions. The following are the key information.

Core Technical Parameters

Item Details
Part Model: CAT 154-0389 C (Self-aligning roller bearing assembly, including inner and outer rings, cage, rollers, and seals)

Material: Outer ring/Inner ring: High carbon chromium bearing steel (1.5% chromium content), Rollers: Chromium-manganese-silicon alloy, Cage: Stamped steel plate/Brass, Seals: Nitrile rubber (NBR), Suitable for -40℃ to +120℃ operating conditions

Key Dimensions: Inner diameter 60 mm (2.362 in), Outer diameter 130 mm (5.118 in), Width 31 mm (1.220 in), Chamfer 2 mm, Rated speed 3600 rpm (grease lubrication)/4800 rpm (oil lubrication)

Load Capacity: Basic rated radial load 92.5 kN, basic rated axial load 35.2 kN, permissible radial load at limiting speed 42 kN, static radial load 185 kN

Unit Weight: Approx. 1.8 kg (3.97 lbs)

Lubrication and Sealing: Double-sided contact seal, compatible with lithium-based grease (NLGI 2), recommended lubrication interval 250-500 hours, suitable for dusty and vibrating conditions.

Structure and Core Functions:

Self-aligning design: Rollers and raceways have spherical contact, allowing for 2°-3° misalignment, compensating for installation errors or shaft deflection, reducing edge stress, suitable for dynamic conditions at articulated joints.

Heavy-duty adaptability: Symmetrical roller structure, capable of withstanding bidirectional axial loads, suitable for frequently changing load components such as loader booms and excavator sticks, resisting impact and vibration.

Sealing protection: Double-sided NBR contact seal effectively prevents dust and mud intrusion, reduces grease leakage, and extends bearing life.

Easy installation: Modular design, directly press-fitted into the bearing housing, no need for additional inner and outer ring assembly, suitable for compact installation spaces, simplifying maintenance procedures.

Compatible Models and Application Scenarios

Compatible Equipment: CAT 950M/962M loaders, 320GC/323GC excavators, 420F/430F backhoe loaders, CB-534D road rollers, etc.

Core Applications: Installed at the drive axle differential end, working device hinge shaft, steering knuckle kingpin, etc., providing heavy-duty support and self-aligning rotation to ensure stable operation of the transmission and working device.