CAT 584-5032 79.5mm Inner Diameter Sleeve Bearing

CAT 584-5032 is a Caterpillar original YM series sleeve bearing (also known as a bushing bearing), which is suitable for moving parts such as hydraulic cylinders and connecting rods. It is used to support the rotation and reciprocating motion of shaft parts, reduce friction, absorb shock, and is a core wear part of high-frequency stressed parts of engineering machinery, ensuring the motion accuracy and service life of the parts. The following are the core information and key points:

Core Technical Parameters

Item Details
Part Model: CAT 584-5032 (5845032) YM Sleeve Bearing, original factory specific, suitable for cylinder pistons, connecting rod pins, etc. in specific equipment

Material: Copper-based alloy (CuSn10Pb10), containing 10% tin and 10% lead, copper base, hardness HB 75-90, surface treated with graphite inlay for self-lubrication, friction coefficient ≤0.12, suitable for oil-free lubrication conditions

Key Dimensions: Inner diameter 40mm, outer diameter 48mm, length 50mm, wall thickness 4mm, chamfer at both ends C1.5, suitable shaft diameter tolerance f7, mounting hole tolerance H7, interference fit 0.015-0.025mm

Compatible Models: CAT 320D/323D excavator, 966H loader, D6R Used in bulldozers, etc., for piston pins or connecting rod joints of boom cylinders and stick cylinders.

Performance Parameters: Rated load capacity 25MPa, operating temperature -30℃ to 120℃, compatible with mineral oil/synthetic hydraulic oil, reciprocating frequency ≤5Hz, service life ≥6000 working hours.

Core Functions and Structure:

Friction Reduction and Support: Copper-based alloy material with graphite inlays reduces friction between shafts and bearings, supports precise movement of shaft parts, and prevents uneven wear and jamming.

Shock Absorption: The alloy material has good toughness, absorbing impact loads during equipment operation, protecting shafts and mounting seats, and reducing component fatigue damage.

Self-Lubricating Properties: Graphite inlays provide continuous lubrication in oil-free or low-oil conditions, suitable for complex working conditions in construction machinery, reducing maintenance frequency.

Positioning and Guiding: Precise dimensions and interference fit ensure stable bearing installation, provide stable guidance for shaft parts, and ensure motion accuracy.

Installation and Maintenance Points

Installation Specifications: Clean the mounting holes and shaft surface, removing burrs and oil stains. The roughness of the mounting holes Ra ≤ 1.6μm. Use cold fitting or a special press-fit tool; do not strike to prevent bearing deformation or alloy layer peeling.

After installation, check coaxiality. Deviation ≤ 0.02mm to ensure smooth shaft movement without jamming.

Maintenance Recommendations: Every 300 working hours, check: bearing wear, clearance (replace if radial clearance > 0.2mm), and surface graphite wear. Replace immediately if any abnormalities are found.

Avoid contact with hard particles. Clean the hydraulic oil regularly to prevent impurities from entering the bearing clearance and accelerating wear.

Only use genuine 584-5032 bearings. Do not substitute with ordinary copper bushings to avoid premature wear and decreased motion accuracy due to incompatible materials and lubrication structures.