CAT 584-6565 Straight Sleeve Bearing

CAT 584-6565 is a Caterpillar genuine carbon steel straight sleeve bearing (no flange/no oil groove, heavy-duty type), compatible with the Cat 420F/430F loader gearbox secondary axle and the 320D/323D excavator swing motor planetary carrier. Its core function is radial positioning and load transfer, reducing friction and wear under low-speed, heavy-load conditions. The following are the professional parameters and application guidelines:

Core Technical Parameters (Professional Version)

Item Details Basic Attributes Model 584-6565, Type: Carbon steel straight sleeve bearing (no flange, no oil groove, no lubrication hole), Compatible with Cat 420F/430F loader gearbox secondary axle and 320D/323D excavator swing motor planetary carrier, Material: SCM415 chromium-molybdenum alloy steel (surface hardened + tempered, hardness HRC 58-62), Outer diameter φ70 mm, Inner diameter φ60 mm, Length 42 mm, Weight: Approximately 0.38 kg, rated radial load ≥180 kN, operating temperature -40℃ to +180℃, surface roughness Ra≤0.4 μm, cylindricity ≤0.01 mm, mating clearance 0.02-0.03 mm

Key Dimensions: Outer diameter tolerance +0.015/-0.010 mm, inner diameter tolerance +0.020/-0.015 mm, length tolerance ±0.1 mm, edge chamfer 0.3×45°, compatible shaft diameter φ60 mm (tolerance f7), mounting hole diameter φ70 mm (tolerance H7), mounting depth ≥42 mm

Material and Process: Material SCM415 chromium-molybdenum alloy steel (tensile strength ≥800 MPa, yield strength ≥650 MPa), cold drawing + precision grinding + quenching + tempering process, surface oxidation treatment for corrosion protection (film thickness 3-5 μm), no lubrication groove / Oil hole, suitable for grease lubrication (Cat 2V lithium-based grease recommended), maximum linear velocity ≤2 m/s. Compatible models: Cat 420F/430F loaders (serial number JAF1000-UP) gearbox second shaft, 320D/323D excavators (serial number JBT1000-UP) planetary carrier for swing motor. Used for radial positioning of the gearbox second shaft and support of the swing motor planetary carrier, bearing radial loads under low-speed heavy loads, reducing friction and wear, and ensuring the coaxiality of transmission components. Assembly and Fit: Clean the shaft and mounting hole surfaces before installation to remove oil/rust. Use cold pressing assembly (interference 0.015-0.025 mm). After installation, bearing end face runout ≤0.03 mm, radial runout ≤0.02 mm, and fit clearance 0.02-0.03 mm (controlled by shaft diameter tolerance). Installation and Maintenance Points: Check the bearing internal/external bearing before installation. The outer surface is free of scratches, burrs, and cracks. Clean the shaft and mounting holes to ensure no foreign objects affect assembly accuracy.

During assembly, use a dedicated press to cold-press the bearing into place, avoiding impacts that could deform or damage the surface. After cold pressing, check the fit between the bearing end face and the mounting hole end face (gap ≤ 0.02 mm).

Maintenance Recommendations: Check the bearing lubrication status every 1200 hours and replenish with Cat 2V lithium-based grease (every 500 hours). Replace immediately if wear (inner diameter increase > 0.05 mm) or surface peeling occurs to prevent the shaft and bearing from seizing.