CAT 325-6023 BEARING-SLV-GD

CAT 325-6023 YM is a Caterpillar genuine bimetallic self-lubricating sleeve bearing (suitable for the pin parts of excavators, loaders, and other equipment, used to bear radial loads and reduce friction, suitable for medium-to-low speed heavy-duty conditions, requiring no additional lubrication). The following is the original data and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 325-6023 YM, Type: Bimetallic Self-Lubricating Sleeve Bearing (Steel Back + Bronze Layer + Solid Lubricant), Material: Steel Back (Q345) + Bronze Layer (CuSn10Pb10) + Solid Lubricant (PTFE+Pb), Single Weight: 1.8 kg, Operating Temperature: -40℃ to +150℃, Suitable for Oil-Free/Boundary Lubrication Conditions, Rated Dynamic Load ≥120 kN, Rated Static Load ≥200 kN, Coefficient of Friction μ≤0.05 (Dry Friction), Limiting Speed ​​(Dry Friction) ≤500 rpm, Service Life ≥8000 Hours, Corrosion Resistance Rating: IP65, Wear Resistance ≥10000 Hours (Normal Operating Conditions)

Key Dimensions
Inner Diameter: 80 mm (3.150 in), Outer Diameter: 100 mm (3.937 in), Length: 90 mm (3.543 in), Wall Thickness: 10 mm (5 mm steel backing + 5 mm bronze layer), chamfer r2 mm, inner diameter tolerance 0/-0.025 mm, outer diameter tolerance 0/-0.030 mm, length tolerance ±0.20 mm, radial clearance 0.05-0.10 mm, surface roughness Ra 0.4 μm, hardness (steel backing HB 200-230, bronze layer HB 80-100)

Compatible Models and Parts: Compatible with Cat 320/325/330 series excavator boom pins and stick pins (1 piece per location), 950/966 series loader rocker arm pins (2 pieces per location), used to bear radial heavy loads, suitable for swinging/reciprocating motion, reducing friction and wear between pins and bearings.

Performance Parameters: Bearing pressure ≥25 MPa, self-lubricating ability (solid lubricant content ≥15%), compressive strength ≥300 MPa. MPa, shear strength ≥60 MPa, coefficient of thermal expansion 18×10⁻⁶/℃, pin fit accuracy h7, seat fit accuracy H8, suitable for pin diameter 80 mm (tolerance h7), installation interference 0.03-0.05 mm.

Structural and Performance Advantages

Bimetallic Structure: The steel back provides high-strength support, the bronze layer has good load-bearing and thermal conductivity, and the solid lubricant achieves self-lubrication, suitable for oil-free lubrication conditions, reducing maintenance needs.

Self-Lubricating Design: No additional lubrication required, avoiding grease contamination, suitable for dusty and harsh working conditions, reducing equipment maintenance costs and downtime.

High-Precision Dimensions: Strict dimensional tolerance and radial clearance control ensure precise fit with pins and seat holes, ensuring smooth component movement and reducing vibration and noise.

Installation and Maintenance Points (Original Data)

Installation: Clean the pin and bearing housing (free from oil and impurities). Use cold pressing/hot mounting (oil temperature ≤ 80℃). Installation pressure ≤ 50 kN. After installation, radial runout ≤ 0.05 mm. Control the interference fit between 0.03-0.05 mm. Do not strike the bearing end face to prevent damage to the bronze layer and solid lubricant.

Maintenance: Check bearing wear every 1000 hours. Replace the bearing if wear exceeds 0.5 mm. Avoid prolonged overload (≤ 120% of rated load) to prevent bearing deformation and failure.

Troubleshooting: Abnormal wear is often due to overload or improper interference fit. Replace the bearing and adjust installation parameters. Abnormal noise is often caused by excessive clearance between the pin and bearing. Check the wear and replace the bearing promptly.