CAT 584-6635 BEARING-SLV-GD

CAT 584-6635 is a Caterpillar original equipment manufacturer (OEM) standard load-bearing straight sleeve bearing (without flange), suitable for Cat 320D2/323D2 excavator boom pins and boom hinges. It is used to bear radial loads and reduce friction between the pin and the support. The following is pure raw data and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 584-6635, Type: Straight-tube flangeless sleeve bearing, Material: Tin bronze (CuSn10Pb10, containing 10% tin and 10% lead, wear-resistant and friction-reducing), Surface treatment: Graphite inlay (12 graphite lubrication grooves, self-lubricating), Single weight: 0.85 kg, Applicable pin diameter: φ80 mm, Rated radial load: ≥180 kN, Operating temperature: -20℃ to +150℃, Lubrication method: Self-lubricating + grease lubrication (replenished with lithium-based grease, dropping point ≥180℃), Protection rating: IP65, Assembly clearance: 0.015-0.030 mm

Key Dimensions
Inner diameter: φ80 mm (tolerance +0.020/+0.010 mm), Outer diameter: φ100 mm (tolerance 0/-0.02 mm), Length: 85 mm (tolerance ±0.15 mm), Wall thickness: 10 mm mm (tolerance ±0.05 mm), graphite groove depth 1.2 mm (tolerance ±0.1 mm), groove width 2 mm (tolerance ±0.1 mm), roundness ≤0.01 mm, cylindricity ≤0.012 mm, end face perpendicularity ≤0.02 mm

Performance Parameters: Brinell hardness HB 90-110, coefficient of friction ≤0.08 (dry friction), ≤0.03 (grease lubrication), bearing pressure ≤25 MPa, linear expansion coefficient 18×10⁻⁶/℃, thermal conductivity 65 W/(m・K), wear rate ≤0.005 mm/1000 hours, fracture strength ≥220 MPa, corrosion resistance: neutral salt spray test ≥72 hours with no obvious rust

Structural and Performance Advantages: Tin bronze material: CuSn10Pb10 alloy combines high strength with excellent wear resistance and friction reduction, suitable for low-speed oscillating conditions of pins.

Graphite Inlay Design: 12 axial graphite lubrication grooves provide short-term self-lubrication in oil-free conditions, reducing maintenance frequency.

Straight-Cylinder Flangeless Structure: Compatible with standard pin supports, easy installation, no additional positioning structure, suitable for compact installation spaces.

Precision Dimensional Tolerances: Strictly controlled inner/outer diameter tolerances ensure stable assembly clearance and reduce pin runout.

Installation and Maintenance Points (Original Data)

Installation: Clean the support hole and sleeve outer surface (free from oil/rust/impurities). Use cold pressing (pressing force ≤ 50 kN, indenter coaxiality ≤ 0.02 mm). After installation, check that the end face and support fit gap ≤ 0.05 mm. Welding or heating is prohibited (temperature > 80℃ can easily cause bronze softening). After assembly, the pin and sleeve coaxiality error ≤ 0.03 mm.

Maintenance: Check clearance every 500 hours (replace if radial clearance > 0.10 mm), replenish lithium-based grease every 1000 hours (use 1/3 of the sleeve cavity), check surface wear every 2000 hours (replace if local wear depth > 0.2 mm), avoid prolonged uneven loading (uneven load ≤ 15% of rated load), and prevent foreign objects from entering the sleeve-pin clearance.

Troubleshooting: Excessive clearance is mostly due to excessive wear; replace the sleeve. Abnormal noise is mostly due to insufficient lubrication or misalignment during assembly; replenish grease or re-press-fit. Surface scratches are mostly due to excessive pin surface roughness; replace the pin and clean the sleeve inner bore.