CAT 380-7562 BEARING-SLV-GD

The CAT 380-7562 YM is a Caterpillar genuine steel-backed aluminum-based straight sleeve bearing, compatible with the planetary carrier bushing of the Cat 306E2/307E2 excavator swing gearbox and the second axle support of the 906M loader gearbox. It is used for radial positioning and wear reduction. The following is pure raw data and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 380-7562 YM, Type: Straight Sleeve Bearing (no flange, with axial oil groove + radial oil hole), Material: Steel backing (SPCC, thickness 1.2 mm, hardness HV 180-200) + Aluminum-based alloy (AlSn20Cu, thickness 0.8 mm, hardness HB 25-35), Single weight 0.18 kg, Operating temperature: -30℃ to +110℃, Rated service life ≥20000 hours, Lubrication method: Grease lubrication (recommended Cat DEO-ULS No. 2 lithium-based grease), Oil groove specifications: 4 axial grooves (2 mm wide, 1 mm deep), 1 radial oil hole (φ2 mm, located in the middle), Protection rating: IP54, Applicable journal diameter: φ35 mm, Applicable bore diameter: φ42 mm

Key Dimensions
Inner diameter: 35 mm (tolerance 0/+0.012 mm), Outer diameter: 42 mm (tolerance 0/-0.010 mm), length 25 mm (tolerance ±0.05 mm), steel back thickness 1.2 mm (tolerance ±0.03 mm), alloy layer thickness 0.8 mm (tolerance ±0.02 mm), oil groove length 22 mm, oil hole center distance from end face 12.5 mm, inner hole roughness Ra≤0.4 μm, outer circle roughness Ra≤0.8 μm
Performance parameters: Radial rated dynamic load 8.5 kN, radial rated static load 15.2 kN, coefficient of friction ≤0.003 (grease lubrication), wear rate ≤0.01 mm/1000 hours, compressive strength ≥250 MPa, shear strength ≥35 MPa, fitting clearance 0.015-0.025 mm, interference fit 0.010-0.018 mm, maximum allowable linear velocity 3 m/s Structural and Performance Advantages
Steel-backed aluminum-based composite structure: The steel backing ensures rigidity and stable installation interference fit, while the aluminum-tin-copper alloy layer provides excellent friction reduction and embedding properties, suitable for low-to-medium speed, medium-load shaft support conditions.

Composite oil groove design: The combination of axial oil grooves and radial oil holes ensures uniform grease distribution, reduces friction and wear, and extends bearing life.

High-precision dimensional fit: Precision machining of the inner and outer diameters allows for precise control of clearance/interference fit between the journal and the bore, reducing vibration and noise.

Strong adaptability: The flangeless design accommodates various through-hole mounting positions, suitable for critical transmission components such as rotary gearboxes and transmissions.

Installation and Maintenance Points (Original Data)

Installation: Clean the journal and bearing housing bore (free of burrs/oil stains). Ensure an interference fit with the bearing housing bore (cold fitting recommended, pressing force ≤ 6 kN). Ensure a clearance fit with the journal. After installation, check the roundness of the inner bore with an inside dial indicator (≤ 0.005 mm). The clearance between the journal and the inner bore should be 0.015-0.025 mm. Do not strike the bearing end face to avoid alloy layer peeling.

Maintenance: Check the bearing temperature every 800 hours (≤ 70℃ is normal). Add grease every 1200 hours (1/4 of the bearing cavity volume). Replace the bearing every 20,000 hours. Avoid overload operation (≤ 110% of rated load) and prevent high-speed operation (≥ 120% of maximum linear speed).

Troubleshooting: Overheating is often caused by insufficient lubrication or too small clearance; add grease and adjust the clearance. Abnormal noise is often caused by wear of the alloy layer or foreign objects entering the bearing; replace the bearing. Excessive clearance is often caused by wear of the alloy layer; replace the bearing. Insufficient interference fit can easily cause the bearing to rotate; re-press or replace the bearing housing bore.