CAT 526-9328 BEARING-SLV-GD

CAT 526-9328 YM is a Caterpillar genuine bimetallic radial sleeve bearing (bearing type), suitable for medium-to-high speed, heavy-duty rotating parts of engines/transmission systems. It is used to support journals, reduce friction, and absorb shock. The following is pure raw data and does not include replacement parts information (Cat® Parts).

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 526-9328 YM, Type: Bimetallic Radial Sleeve Bearing (Low Carbon Steel Back + Tin-based Babbitt Metal), Material: Steel Back Q235 (SPCC), Liner: SnSb11Cu6 (90% Tin, 11% Antimony, 6% Copper), Single Weight: 0.98 kg, Operating Temperature: -30℃ to +160℃, Rated Radial Dynamic Load: 195 kN, Rated Radial Static Load: 420 kN, Limiting Speed: 900 rpm, Coefficient of Friction ≤0.07 (Oil Film Condition), Corrosion Resistance Rating: IP65, Service Life ≥10000 hours, Applicable Pressure ≤12 MPa, Oil Film Thickness ≥0.02 mm, Static Compression Deformation ≤8% (70℃×22 hours)

Key Dimensions
Inner Diameter: 58 mm (2.283 in, H7 Tolerance +0.030/0 mm), Outer Diameter: 78 mm 105 mm (3.071 in, g6 tolerance 0/-0.022 mm), total length 105 mm (4.134 in), wall thickness 10 mm (3 mm steel backing + 7 mm alloy layer), 1×45° chamfer at both ends, steel backing surface roughness Ra 1.6 μm, alloy layer surface roughness Ra 0.8 μm, cylindricity ≤0.015 mm, coaxiality ≤0.02 mm, journal diameter 58 mm (h6 tolerance), mounting hole diameter 78 mm (H8 tolerance)

Compatible Models and Parts: Compatible with Cat C13/C15 engines, D8T/D9R bulldozers, and 777F mining truck crankshaft connecting rod journals, camshaft supports, and drive gear shaft ends. Mounted in bearing housing holes to support rotating journals. Suitable for medium-high speed, heavy load, and impact load conditions. Compatible with Cat DEO oil lubrication system.

Performance Parameters Babbitt alloy hardness HB 25-35, 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 ≤90 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.