CAT 379-0192 BEARING-SLV-GD

CAT 379-0192 is a Caterpillar genuine YM (Yoke Mounted) forklift mounting sleeve bearing used in articulated and transmission components of engineering machinery, providing radial support and oscillation adaptation. The following is structured raw data and does not include replacement parts information (Cat® Parts).

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 379-0192, Type YM forklift mounting type bimetallic sleeve bearing, material is low carbon steel backing + high tin aluminum alloy inner liner, diffusion annealing + cold rolling forming, inner liner hardness HB 80-100, bonding strength ≥100 MPa, single weight 1.2 kg, working temperature -40℃ to +120℃, lubrication method is grease lubrication, suitable for swing angle ≤±30°, medium and low speed (≤500 r/min) working conditions, used in boom articulation, stick connection, frame steering and other parts

Key Dimensions
Inner diameter 60 mm (2.362 in), outer diameter 75 mm (2.953 in), total length 65 mm (2.559 in), flange diameter 95 mm (3.740 in), flange thickness 10 mm (0.394 in), mounting bolt holes 4×φ12 mm (center distance) 80 mm), bearing clearance 0.020-0.040 mm, inner diameter tolerance H7, outer diameter tolerance h6, flange flatness ≤0.015 mm, chamfer at both ends 1.5×45°, mating journal surface roughness Ra≤0.8 μm
Compatible Machines and Parts: Compatible with Cat 320D2, 323D2 excavators, 420F2, 430F2 loaders, and 446E backhoe loaders at the lower boom hinge point, upper stick hinge point, and steering knuckle hinge point. One piece per part. Radial load ≤80 kN, impact load ≤120 kN, compatible oscillation frequency ≤10 times/minute
Performance Parameters: Radial load capacity ≥80 kN, sliding friction coefficient ≤0.08 (grease lubrication), wear rate ≤0.002 mm/1000 hours, fatigue life ≥10000 hours, compressive strength ≥250 MPa, inner lining thickness 2.5 mm, bonding layer thickness 0.05-0.1 mm, limiting speed 800 r/min
Structural and Performance Advantages
Bimetallic Composite Structure: Steel backing ensures rigidity and installation strength; high-tin aluminum alloy liner reduces friction and wear, suitable for frequent oscillation and impact conditions, reducing the risk of journal wear.
YM Forklift Mounting Design: Precise flange and bolt hole positioning ensures a tight fit after installation, reducing loosening and uneven loading, facilitating quick disassembly and maintenance, and improving the stability of the hinged parts.
Precision Clearance Control: Factory-preset bearing clearance for grease lubrication ensures flexible and smooth oscillation, reducing vibration and noise, and extending the life of surrounding components.
Original Manufacturer Compatibility Guarantee: Manufactured by Caterpillar, dimensions and mounting positions are perfectly matched to the journals, avoiding assembly difficulties or premature failure caused by tolerance deviations.

Installation and Maintenance Points (Original Data)

Installation Procedure: Clean the bearings, mounting surfaces, and journals. Install flange bolts (M10×1.5, grade 8.8) with a torque of 45 N·m. After installation, check for any wobble or jamming, radial clearance of 0.020-0.040 mm, and ensure the bolts are not loose.

Maintenance Cycle: Check the grease fitting every 200 hours. Replenish with Cat 1U-8886 grease every 500 hours. Check the liner wear every 8000 hours; replace if wear exceeds 0.15 mm.

Common Troubleshooting: Insufficient lubrication leading to liner burning requires inspection of the lubrication system and grease replenishment. Uneven load causing localized wear requires repositioning the bearing and replacement. Scratched journals require repair or replacement to prevent accelerated liner damage.