CAT 376-3636 19.19mm Inner Diameter Sleeve Bearing

CAT 376-3636 (3763636) YM is a Caterpillar original double-and-a-half tapered roller bearing outer ring (bearing housing ring, half-ring structure), suitable for gearbox second shaft/drive axle differential bearing assembly. The following is purely precise information (no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 376-3636 YM Double-and-a-half tapered roller bearing outer ring (half bearing housing ring)

Part Type: Double-and-a-half split tapered roller bearing outer ring, paired with the same model inner ring + roller assembly, withstands radial + bidirectional axial loads, suitable for gearbox second shaft, drive axle differential shaft system, half ring with locating boss, detachable for installation

Material: Chromium bearing steel GCr15SiMn, quenching hardness HRC61-65, raceway ultra-precision ground (Ra≤0.08μm), contact fatigue strength ≥1600MPa, anti-rust coating thickness 5-8μm

Key Dimensions: Inner Diameter 107.95mm (4.2500in), outer diameter 168.275mm (6.6250in), single half width 28.575mm (1.1250in), cone angle 12°, locating boss width 6.0mm, height 2.0mm, half-circle split surface flatness ≤0.01mm, chamfer 2.0×45°

Structural Features: Double-half split design, raceway conical surface, contacting the inner ring roller line, suitable for oil lubrication, limiting speed 4200rpm, rated dynamic load 112.0kN, rated static load 145.0kN, clearance class C3

Compatible Structures: Loader/excavator gearbox two-shaft bearing assembly, drive axle differential side bearing assembly, compatible with 376-3635 inner ring + roller assembly, 376-3637 locating circlip

Applicable Working Conditions: Construction machinery gearboxes/ Drive axle low-to-medium speed (≤3500rpm), medium-to-heavy load (≤120kN) shaft system, suitable for impact loads and direction-changing conditions, oil temperature -30℃ to 120℃.
Compatible Models and Assemblies:
Excavators: CAT 326, 330, 336 (326 gearbox second shaft bearing assembly, 330 drive axle differential side bearing assembly)
Loaders: CAT 966, 972, 980 (966 gearbox intermediate shaft bearing assembly, 972 drive axle differential bearing assembly)
Compatible Assemblies: 326 gearbox second shaft bearing assembly, 966 gearbox intermediate shaft bearing assembly, 330 drive axle differential side bearing assembly
Installation and Fitting Points: The outer half-ring and seat bore should have an interference fit (interference 0.010-0.020mm). Use a special pressure block for symmetrical cold pressing installation. Do not strike the half-ring split surface to prevent deformation and raceway damage.

Before installation, clean the seat hole and raceway, ensuring they are free of burrs, oil stains, and rust. Inspect the half-circle for cracks and raceway peeling, ensure the locating boss is intact, and maintain a gap of ≤0.02mm between the dividing surfaces.

After installation, radial runout should be ≤0.03mm. Axial clearance after assembly with the inner ring should be 0.06-0.12mm. Operation should be smooth without jamming or abnormal noise. Oil lubrication pressure should be 0.15-0.30MPa, and flow rate ≥2L/min.

For disassembly, use a dedicated puller to pull out each half-circle separately. Do not pry the raceway. Before reuse, check the raceway wear (replace if >0.12mm).