CAT 298-6953 BEARING AS

CAT 298-6953 is a Caterpillar genuine mounted double-row self-aligning roller bearing assembly. It integrates the bearing, housing, seals, and lubrication interface, and is suitable for the swing or transmission parts of small loaders/excavators. It can withstand heavy radial loads and bidirectional light axial loads, and compensates for installation misalignment. The following are the key information.

Core Technical Parameters

Item Details
Part Model: CAT 298-6953 (Mounted Double Row Self-Aligning Roller Bearing Assembly, GCr15SiMn Bearing Steel, Cast Steel Bearing Housing, Double Row Spherical Rollers, Double Lip Seal)

Material: Bearing steel (HRC 60-64), cast steel bearing housing (Q345B, tensile strength ≥ 510 MPa), nitrile rubber (NBR) seal, suitable for operating conditions from -30℃ to +110℃

Key Dimensions: Bearing inner diameter 40 mm (1.5748 in), outer diameter 80 mm (3.1496 in), width 30 mm (1.1811 in); bearing housing mounting hole center distance 120 mm, bolt hole diameter 14 mm

Unit Weight: Approx. 1.85 kg (4.0785 lbs)

Load and Speed: Rated radial load 95 kN, rated axial load 35 kN, grease-lubricated limiting speed 3600 rpm rpm, radial clearance C3 (0.035-0.055 mm)

Core Functions: Integrated support, sealing, and lubrication interface; adaptable to rotary mechanisms, drive shafts, etc.; compensates for ≤2° angular misalignment; withstands combined loads; protects against dust and moisture intrusion.

Structure and Core Functions:

Double-row spherical roller bearings: Symmetrical double-row design, load-bearing capacity approximately 40% higher than single-row bearings; can simultaneously withstand heavy radial and bidirectional light axial loads; adaptable to shaft deflection or installation errors.

Integrated bearing housing: High-rigidity cast steel bearing housing; precise installation positioning; reduces assembly errors; adaptable to bolt fixing; convenient installation.

Double-lip sealing system: NBR double-lip seal + dust lip; IP65 protection rating; prevents mud, water, and dust intrusion; supports periodic grease lubrication (500-hour cycle) with outer ring lubrication groove and grease fitting.

Pre-adjusted clearance: Factory-preset C3 radial clearance; no additional adjustment required after installation, reducing on-site commissioning time and ensuring stable operation.

Compatible Models and Application Scenarios

Compatible Equipment: CAT 305.5/306/307 mini excavators, 906/907 compact loaders, and parts of some skid steer loaders such as the slewing platform, drive wheel axle, and hydraulic pump drive shaft.

Core Application: Used to support rotating components such as the slewing mechanism and drive shaft, providing stable support under low to medium speed (≤2800 rpm) and heavy load conditions in earthmoving and municipal engineering applications, compensating for angular misalignment, and extending the life of the transmission system.