CAT 1U-1967 BEARING

CAT 1U-1967 is a genuine Caterpillar self-aligning roller bearing (spherical roller bearing), suitable for transmission/rotation components of engines, hydraulic motors, and tracked loaders. It can withstand heavy radial loads and light bidirectional axial loads, and is suitable for misalignment of the shaft and bearing housing. The following are the key information.

Core Technical Parameters

Item Details
Part Model: CAT 1U-1967 (Self-aligning roller bearing, GCr15SiMn bearing steel, stamped steel cage, symmetrical spherical rollers, outer ring with lubrication groove)

Material: Bearing steel matrix, hardness HRC 60-64, tensile strength ≥ 1900 MPa, contact fatigue life ≥ 1200 hours, suitable for -40℃ to +120℃ operating conditions

Key Dimensions: Inner diameter 35 mm (1.3780 in), outer diameter 72 mm (2.8346 in), width 27 mm (1.0630 in), chamfer radius 1.5 mm, lubrication groove diameter 55 mm

Unit Weight: Approx. 0.41 kg (0.9039 lbs)

Tolerances and Performance: Inner diameter tolerance 0/-0.015 mm, outer diameter tolerance +0.015/0 mm, radial clearance C3 (0.030-0.050 mm), rated radial load 78 kN, rated axial load 28 kN, limiting speed 4000 rpm (grease lubrication)

Core Functions: Bears heavy radial loads from engine crankshafts, hydraulic motor shafts, etc., allowing ≤2° misalignment between shaft and bearing housing, suitable for low-to-medium speed (≤2500 rpm) rotational conditions, suppressing vibration and noise.

Structure and Core Functions:
Spherical roller design: Symmetrical spherical rollers make point contact with the raceway, compensating for misalignment (≤2°) caused by installation errors or shaft deflection, avoiding edge stress concentration, suitable for heavy-load vibration conditions.

Bidirectional load capacity: Can simultaneously bear heavy radial loads and bidirectional light axial loads (≤28 kN), suitable for hydraulic motor shafts, engine camshafts, and other components subjected to combined stresses.

Lubrication and Sealing: The outer ring features lubrication grooves and oil holes, suitable for forced lubrication or periodic grease lubrication (500-hour cycle); both sides are sealed with nitrile rubber (NBR), IP65 protection rating, preventing dust and moisture intrusion and extending bearing life.

Cage and Rollers: The stamped steel cage evenly separates the spherical rollers, reducing friction and wear between rollers, improving operational smoothness, and lowering noise (≤78 dB).

Compatible Models and Application Scenarios

Compatible Equipment: CAT 3116/3306 engines, 963B/973 tracked loaders, and some hydraulic motors (such as the output shaft of piston-type hydraulic motors).

Core Applications: Installed at the front end of the engine crankshaft, hydraulic motor output shaft, track drive wheel axle, etc., to support the rotating shaft, bear heavy radial loads, compensate for angular misalignment, and ensure smooth operation of the transmission system.