CAT 585-1451 BEARING-SLV-GD

CAT 585-1451 YM is a Caterpillar genuine steel-backed copper-lead alloy straight sleeve bearing, compatible with Cat 320GC/323GC excavator stick pins and 930M loader boom joints, used for radial support and friction reduction. The following is pure raw data and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 585-1451 YM, Type: Straight Sleeve Bearing (no flange, with axial oil grooves + radial oil holes), Material: Steel backing (SPCC, thickness 1.5 mm, hardness HV 190-210) + Copper-lead alloy (CuPb10Sn10, thickness 1.0 mm, hardness HB 30-40), Single weight: 0.52 kg, Operating temperature: -40℃ to +120℃, Rated service life: ≥25000 hours, Lubrication method: Grease lubrication (recommended Cat DEO-ULS No. 2 lithium-based grease), Oil groove specifications: 6 axial grooves (3 mm wide, 1.2 mm deep), 2 radial oil holes (φ3 mm, symmetrically distributed), Protection rating: IP54, Applicable journal diameter: φ50 mm, Applicable bore diameter: φ58 mm

Key Dimensions
Inner diameter: 50 mm (tolerance 0/+0.015) Dimensions: 58 mm outer diameter (tolerance 0/-0.012 mm), 40 mm length (tolerance ±0.08 mm), steel backing thickness 1.5 mm (tolerance ±0.04 mm), alloy layer thickness 1.0 mm (tolerance ±0.03 mm), oil groove length 35 mm, oil hole center distance from end face 20 mm, inner hole roughness Ra≤0.4 μm, outer circle roughness Ra≤0.8 μm
Performance Parameters: Radial rated dynamic load 18.6 kN, radial rated static load 32.5 kN, coefficient of friction ≤0.002 (grease lubrication), wear rate ≤0.008 mm/1000 hours, compressive strength ≥300 MPa, shear strength ≥40 MPa, fitting clearance 0.020-0.030 mm, interference fit 0.012-0.020 mm, maximum permissible linear velocity 4 m/s Structural and Performance Advantages
Steel-backed copper-lead composite structure: The steel backing ensures interference fit stability and rigidity during installation, while the copper-lead alloy layer offers excellent friction reduction and embedding properties, suitable for medium-speed, medium-heavy-load shaft support applications.

Multi-oil groove and hole design: Axial oil grooves + symmetrical radial oil holes ensure uniform grease distribution, reduce friction and wear, and extend bearing life.

High-precision dimensional fit: Precision machining of the inner and outer diameters ensures precise clearance/interference control, reducing vibration and noise, and adapting to various through-hole mounting positions.

Strong adaptability: The flangeless design adapts to key components such as stick pins and boom joints, providing both support and friction reduction functions.

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 ≤10 kN). Ensure a clearance fit with the journal. After installation, check the roundness of the inner bore with an inside dial indicator (≤0.008 mm). The clearance between the journal and the inner bore should be 0.020-0.030 mm. Do not strike the bearing end face to avoid alloy layer peeling.

Maintenance: Check the bearing temperature every 1000 hours (≤75℃ is normal). Add grease every 1500 hours (1/3 of the bearing cavity volume). Replace the bearing every 25000 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.