CAT 595-2052 110mm Inner Diameter Sleeve Bearing

CAT 595-2052 is a Caterpillar genuine bimetallic self-lubricating sleeve bearing (suitable for boom/stick pins of heavy-duty excavators and loaders, bearing heavy radial loads, suitable for low-to-medium speed, oilless/boundary lubrication conditions), with an inner diameter of 110 mm. The following are pure original data and do not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 595-2052, 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: 3.2 kg, Operating temperature: -40℃ to +150℃, Rated dynamic load ≥180 kN, Rated static load ≥280 kN, Coefficient of friction μ≤0.05 (dry friction), Limiting speed (dry friction) ≤300 rpm, Service life ≥8000 hours, Corrosion resistance rating: IP65

Key Dimensions
Inner diameter: 110 mm (4.331 in), Outer diameter: 130 mm (5.118 in), Length: 100 mm (3.937 in), Wall thickness: 10 mm (steel back 5 mm + bronze layer 5 mm), Chamfer: r3 mm, Inner diameter tolerance 0/-0.030 mm, outer diameter tolerance 0/-0.035 mm, length tolerance ±0.25 mm, radial clearance 0.08-0.12 mm, surface roughness Ra 0.4 μm, hardness steel back HB 200-230, bronze layer HB 80-100
Compatible Models and Parts: Compatible with boom pins, stick pins, and bucket pins of Cat 336/349 series excavators and 980/990 series loaders. 1-2 pieces per location are used to reduce friction between the pins and the boom, and to absorb impact loads.
Performance Parameters: Bearing pressure ≥30 MPa, solid lubricant content ≥15%, compressive strength ≥320 MPa, shear strength ≥65 MPa, coefficient of thermal expansion 18×10⁻⁶/℃, pin fit accuracy h7, seat fit accuracy H8, compatible pin diameter 110 mm (tolerance) h7), installation interference 0.04-0.06 mm
Structural and Performance Advantages
Bimetallic Composite Structure: The steel backing provides high-strength support, the bronze layer is thermally conductive and wear-resistant, and the solid lubricant achieves self-lubrication, requiring no additional lubrication, suitable for harsh working conditions such as dust and mud.

Heavy-Duty Adaptable Design: High rated load, capable of withstanding the impact and vibration of the boom/stick, reducing wear on pins and bearings, and extending the life of boom, pins, and other components.

High-Precision Dimensional Control: Strict tolerance and radial clearance design ensures precise fit with pins and seat holes, guaranteeing smooth movement and reducing vibration and noise.

Installation and Maintenance Points (Original Data)
Installation: Clean the pins and seat holes (free of oil and impurities), use cold pressing/hot mounting (oil temperature ≤80℃), installation pressure ≤60 kN, radial runout ≤0.05 mm after installation, interference control within 0.04-0.06 mm, do not strike the bearing end face to prevent damage to the bronze and lubrication layers.

Maintenance: Check for wear every 1000 hours; replace the bearing when wear exceeds 0.6 mm. Avoid prolonged overload (≤120% of rated load) to prevent bearing deformation and failure.

Troubleshooting: Abnormal wear is often caused by overload or improper interference fit; replace the bearing and adjust installation parameters. If excessive clearance causes abnormal noise, check for wear and replace the bearing promptly.