CAT 584-6438 BEARING-SLV-GD

CAT 584-6438 is a Caterpillar original equipment manufacturer (OEM) standard load-bearing sleeve bearing (suitable for the boom/stick articulation pins of Cat 320D/323D excavators and 950H loaders, used to transmit radial loads, absorb vibrations, reduce friction, and is suitable for low-to-medium speed, medium radial load conditions, ensuring smooth operation of the articulated joint). The following is pure original data and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 584-6438, Type: Conventional Load Type Sleeve Bearing (Bimetallic Structure, Steel Back + Copper-Lead Alloy Layer + Tin Plating), Material: Steel Back (SPCC Cold-Rolled Steel Plate, Thickness 1.5 mm), Anti-Friction Layer (CuPb24Sn4 Copper-Lead Alloy, Thickness 0.3 mm), Plating (Pure Tin, Thickness 0.005 mm), Single Weight: 0.85 kg, Operating Temperature: -20℃ to +150℃, Rated Radial Dynamic Load: 65 kN, Rated Radial Static Load: 120 kN, Limiting Speed: 1200 rpm, Coefficient of Friction: ≤0.08, Corrosion Resistance: IP65, Service Life: ≥8000 hours, Fitting Clearance: 0.03-0.08 mm, Lubrication Method: Grease Lubrication (Recommended: Cat MP grease)

Key Dimensions
Outer Diameter: 90 mm (3.543 in), Inner Diameter: 70 mm 100 mm (2.756 in), 100 mm (3.937 in), 10 mm wall thickness, 1.5 mm steel backing thickness, 0.3 mm anti-friction layer thickness, 0.005 mm coating thickness, H7 inner diameter tolerance (+0.030/0 mm), g6 outer diameter tolerance (0/-0.022 mm), cylindricity ≤0.02 mm, surface roughness Ra 0.4 μm, 1×45° chamfer at both ends, 90 mm mounting groove diameter (H8 tolerance), 70 mm mating shaft diameter (h6 tolerance)
Compatible Machines and Parts: Compatible with Cat 320D/320D2/323D/323D2 excavators (boom and stick hinge pins, stick and bucket hinge pins), Cat 950H/962H loaders (boom and frame hinge pins), 2 pins per hinge point. This component is designed to withstand moderate radial loads, is suitable for low-to-medium speed oscillating conditions, and reduces wear on the pin and seat bore.

Performance Parameters: Tensile strength ≥450 MPa, Yield strength ≥300 MPa, Brinell hardness HB 70-90 (anti-friction layer), Compressive strength ≥250 MPa, Fatigue strength ≥±150 MPa (10⁷ cycles), Oil resistance (compatible with Cat DEO engine oil and MP grease), Wear resistance (wear rate ≤0.01 mm/1000 hours), Thermal conductivity ≥50 W/(m・K), Coefficient of linear expansion 18×10⁻⁶/℃

Structural and Performance Advantages: Bimetallic anti-friction structure: The steel back provides rigid support, the copper-lead alloy layer has good anti-friction and load-bearing performance, and the tin plating layer reduces starting friction, making it suitable for low-to-medium speed conditions under normal loads.

Precision Dimension Control: Inner diameter H7, outer diameter g6 tolerance, cylindricity ≤0.02 mm, ensuring proper fit with the pin/seat bore, reducing vibration and abnormal noise.

Long-lasting Lubrication Compatibility: Compatible with grease lubrication, low coefficient of friction, excellent wear resistance, service life exceeding 8000 hours, reducing maintenance frequency.

Installation and Maintenance Points (Original Data)

Installation: Clean the pin and seat bore (free of oil and burrs), cold press installation (pressure ≤50 kN, avoid impact), after installation, cylindricity ≤0.02 mm, radial runout ≤0.03 mm, check the fit clearance after installation (0.03-0.08 mm), welding or heating installation is prohibited (temperature >80℃ will damage the friction-reducing layer).

Maintenance: Replenish grease every 1000 hours (5-8 g each time), check inner diameter wear every 2000 hours (replace if wear > 0.1 mm), avoid overload (≤ 120% of rated load), and prevent the friction-reducing layer from peeling off.

Troubleshooting: Overheating at the hinge is often due to insufficient lubrication; replenish grease promptly. Excessive clearance (> 0.1 mm) can cause abnormal noise and vibration; replace the bearing. Friction-reducing layer peeling is often due to installation impact or overload; check the installation process and operating conditions.