CAT 584-5052 95.4mm Inner Diameter Sleeve Bearing

CAT 584-5052 is a Caterpillar genuine YM series straight-tube sleeve bearing (shoulder sleeve), a wear-resistant support component for heavy-duty pin shafts, suitable for the boom, stick, and frame hinges of excavators, loaders, bulldozers, and other equipment. Its main features are wear resistance, impact resistance, and low friction, making it suitable for the high-frequency oscillation and dusty, humid conditions of construction machinery…

Core Technical Parameters

Item Details
Part Model: CAT 584-5052 YM Sleeve Bearing (Straight Tube Flangeless Bushing)

Material: Carbon steel base material + copper/zinc plating, or bronze alloy, balancing strength and wear resistance, suitable for heavy-duty oscillating friction Cat®…

Key Dimensions: Inner diameter approx. 50-60mm, outer diameter approx. 60-70mm, length approx. 70-80mm (subject to actual product and manual), compatible with corresponding pin diameters and mounting holes

Compatible Models: Excavators 320D/323D/330D, Loaders 930K/950K, Bulldozers D6/D7, used for boom-stick articulation, frame-rocker arm, and connecting rod pin support

Performance Characteristics: Precision reaming of inner bore + Surface lubrication grooves store oil and reduce friction; the coating provides corrosion protection and resists fretting wear; interference fit installation ensures stable positioning and suppresses loosening under impact.

Structure and Core Functions
Hinged Support: As an intermediate wear-resistant layer between the pin and the mounting hole, it transmits radial loads, adapts to frequent oscillation and impact conditions, and reduces direct wear between the pin and the machine body.

Lubrication and Wear Resistance: The inner hole has axial/circumferential lubrication grooves to store grease, forming an oil film to reduce the coefficient of friction; the coating increases surface hardness and extends wear life.

Positioning and Anti-Loosening: The interference fit into the mounting hole prevents axial movement, ensuring the motion accuracy and stability of the hinged part.

Installation and Maintenance Points
Installation Specifications
Clean the mounting hole and the outer diameter of the bearing, removing burrs, rust, and oil. Check the roundness and dimensional tolerances of the hole to avoid deformation after installation.

Use cold pressing or heating the mounting hole (≤80℃) to press in the bearing. Do not directly strike the bearing end face to prevent damage to the coating or deformation of the base material.

After installation, ensure the clearance between the inner bore and the pin is 0.05-0.15mm to ensure smooth movement and avoid excessive clearance that could cause impact noise.

Maintenance Recommendations: Check every 500-800 working hours for wear, deformation, rust, and grease leakage. Replace immediately if any issues are found.

Inspect the matching pins and seals simultaneously. Replace the entire set if wear exceeds limits to prevent rapid failure of the new bearing.

Regularly apply lithium-based grease suitable for operating conditions from -20℃ to 120℃ to maintain an intact lubrication film.