CAT 357-6282 BEARING-SLEE

CAT 357-6282 is a Caterpillar genuine plain sleeve bearing, suitable for the boom pin or bucket hinge point of Cat 980K, 982M and other wheel loaders. It is used to bear radial loads and provide stable hinge rotation. The following is pure raw data and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 357-6282, Type: Straight-tube flangeless sleeve bearing (integral type), Material: Tin bronze (CuSn10Pb10, Hardness HB85-105), Weight: 1.82 kg, Applicable Working Conditions: Medium load, medium speed, oscillating conditions, Working Temperature: -30℃ to +110℃, Lubrication Method: Grease lubrication (compatible with Cat Moly-Dee No. 2 lithium-based grease), Protection Rating: IP54, Fitting Accuracy: H7 (shaft)/h6 (hole)

Key Dimensions
Inner Diameter d=75 mm (Tolerance 0/-0.025 mm), Outer Diameter D=95 mm (Tolerance 0/-0.022 mm), Length L=65 mm (Tolerance ±0.15 mm), Wall Thickness t=10 mm (Tolerance ±0.08 mm), Inner Hole Surface Roughness Ra≤0.4 μm, Outer Diameter Surface Roughness Ra≤0.8 μm, C2 chamfer at both ends (tolerance ±0.2 mm), 2 oil grooves (axially symmetrically distributed, 3 mm wide × 1 mm deep)

Performance Parameters: Radial rated load Cr=85 kN, allowable speed ≤150 rpm (grease lubrication), coefficient of friction ≤0.08 (grease lubrication condition), fatigue life ≥8000 hours (normal condition), compressive strength ≥280 MPa, elastic modulus 110 GPa, linear expansion coefficient 18×10⁻⁶/℃

Structural and Performance Advantages:
Tin bronze material: possesses excellent wear resistance, corrosion resistance, and embedding properties, can accommodate small impurities, reduces wear on the pin and sleeve, and is suitable for dusty and vibrating conditions in engineering machinery.

Integral straight cylindrical structure: compact structure, convenient installation, no splicing gaps, avoids stress concentration, and improves load-bearing stability.

Double oil groove design: facilitates grease storage and distribution, ensures continuous lubrication of the pin and sleeve contact surface, reduces friction and wear, and extends service life.

High-precision fit: Strict tolerances for inner and outer diameters ensure compatibility with the pin and mounting hole, reducing loosening and vibration, and improving hinge connection accuracy.

Installation and Maintenance Points (Original Data)

Installation: Clean the pin and mounting hole (free from oil, rust, and impurities). The sleeve and mounting hole should have an interference fit (interference 0.015-0.025 mm). Use a press to evenly press the sleeve in (do not strike). After installation, check for smooth rotation (no jamming or abnormal noise). Add Cat Moly-Dee No. 2 lithium-based grease until the oil groove is full.

Maintenance: Check the grease level every 1000 hours and replenish as needed. Check the sleeve wear every 2000 hours; replace the sleeve when the inner diameter wear exceeds 0.3 mm. Avoid overload operation (loads exceeding the rated value can easily cause sleeve deformation) and prevent pin misalignment (which exacerbates localized wear). Troubleshooting: Rotational jamming is often due to insufficient lubrication or worn sleeves; add grease or replace the sleeve. Excessive clearance is due to long-term wear; replace the sleeve and check the pin wear. Abnormal noise is often due to misaligned installation; correct the installation accuracy and re-press-fit.