CAT 500-2893 57.411mm Inner Diameter Sleeve Bearing

The CAT 500-2893 is a Caterpillar genuine bimetallic radial sleeve bearing (bearing type), with an inner diameter of 57.411 mm. It is suitable for rotating parts in medium-speed, heavy-duty engines/transmission systems, used to support journals, reduce friction, and absorb shock. The following are raw specifications and do not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 500-2893, Type: Bimetallic Radial Sleeve Bearing (Low Carbon Steel Back + Tin-Based Babbitt Metal), Material: Steel Back SPCC, Liner: SnSb11Cu6 (90% Tin, 11% Antimony, 6% Copper), Single Weight: 0.82 kg, Operating Temperature: -30℃ to +160℃, Rated Radial Dynamic Load: 180 kN, Rated Radial Static Load: 400 kN, Limiting Speed: 850 rpm, Coefficient of Friction: ≤0.07 (Oil Film Condition), Corrosion Resistance Rating: IP65, Service Life: ≥10000 hours, Applicable Pressure: ≤10 MPa, Oil Film Thickness: ≥0.02 mm, Static Compression Deformation: ≤8% (70℃ × 22 hours)

Key Dimensions
Inner Diameter: 57.411 mm (2.260 in, H7 Tolerance +0.030/0 mm), Outer Diameter: 76 2.992 in (g6 tolerance 0/-0.022 mm), total length 98 mm (3.858 in), wall thickness 9.2945 mm (3 mm steel backing + 6.2945 mm alloy layer), 1×45° chamfer at both ends, surface roughness Ra 1.6 μm for steel backing, surface roughness Ra 0.8 μm for alloy layer, cylindricity ≤0.015 mm, coaxiality ≤0.02 mm, journal diameter 57.411 mm (h6 tolerance), mounting hole diameter 76 mm (H8 tolerance)

Compatible Models and Parts: Compatible with crankshaft connecting rod journals and camshaft supports of Cat C11 engines, D6T bulldozers, and 773G mining trucks. Installed in bearing housing holes, suitable for medium-speed heavy-duty and impact load conditions, compatible with Cat DEO oil lubrication system.

Performance Parameters: Babbitt hardness HB 25-35 mm, steel backing tensile strength ≥370 MPa, alloy layer bonding strength ≥145 MPa, wear resistance (wear rate ≤0.004 mm/1000 hours), thermal conductivity ≥52 W/(m・K), linear expansion coefficient 17×10⁻⁶/℃, oil resistance (compatible with Cat DEO engine oil/hydraulic oil, volume change ≤4%, 70℃×168 hours), fatigue strength ≥±175 MPa (10⁷ cycles)

Structural and Performance Advantages: Bimetallic composite structure: The steel backing provides rigid support, while the Babbitt alloy liner offers excellent embedding and conformability, compensating for installation errors and protecting the journal, reducing the risk of adhesion.

Precision Tolerances and Geometric Control: Inner diameter H7, outer diameter g6 tolerance, cylindricity ≤0.015 mm, ensuring a stable oil film and low friction, reducing vibration and heat generation.

Long-lasting wear-resistant design: The alloy layer formula is adapted to various working conditions, resisting oil and aging, resulting in low wear rate and reduced maintenance frequency and costs.

Installation and Maintenance Points (Original Data)

Installation: Clean the bearing housing and journal (free of oil and burrs), cold press installation (pressure ≤ 80 kN), after installation, cylindricity ≤ 0.015 mm, radial runout ≤ 0.03 mm, hot installation is prohibited (> 80℃ will damage the alloy bond), ensure oil hole alignment (deviation ≤ 0.5 mm).

Maintenance: Check bearing temperature every 800 hours (≤ 85℃), check oil film pressure every 1500 hours (≥ 0.2 MPa), check inner diameter wear every 2000 hours (> 0.12 mm requires replacement), avoid overload (≤ 120% of rated load). Troubleshooting: Abnormal noises are often caused by insufficient lubrication, requiring inspection of the lubrication system; journal wear is often caused by excessive clearance, requiring replacement of the bearing and repair of the journal; alloy layer peeling is often caused by improper installation or overload, requiring investigation of the process and operating conditions.