CAT 584-5777 89.2mm Inner Diameter Sleeve Bearing

CAT 584-5777 is a Caterpillar YM series general-purpose sleeve bearing (bushing), suitable for shaft-bore positioning and friction protection in medium and light-load equipment. It is commonly used in linkages, counterweight bars, rocker arms, and other mechanisms of loaders, excavators, road rollers, etc., to reduce wear and maintain assembly accuracy.

Core Technical Parameters

Item Details
Part Model: CAT 584-5777 YM Sleeve Bearing (General Purpose Bushing)

Material: Carbon steel / Alloy steel, surface hardened, blackened or galvanized, suitable for medium and light load conditions, wear-resistant and corrosion-resistant

Key Dimensions: Inner diameter 89.2mm, outer diameter and length subject to actual product/manual, precise fit clearance, suitable for corresponding shaft diameter and installation space

Compatible Models: Loaders 930K/950K, Excavators 320D/336D, Road Rollers CS-56B/CS-68B, etc., used in linkages, counterweights, rocker arms, eccentric counterweights, and other mechanisms

Performance Characteristics Universal design adapts to multiple scenarios; surface hardening treatment enhances wear resistance and lifespan; standard tolerances ensure assembly interchangeability, meeting the needs of medium-light load and low-to-medium utilization conditions.

Structure and Core Functions

Friction Protection and Positioning: Installed between the shaft and hole, it isolates direct metal-to-metal contact, reduces motion friction and wear, and precisely positions the shaft system to prevent radial misalignment, ensuring stable operation of the mechanism.

Load Transfer and Buffering: Adaptable to medium-light load conditions, it evenly transfers radial loads, absorbs some vibration energy, reduces structural stress, and extends the lifespan of related components.

Assembly Interchangeability and Maintenance Convenience: Universal specifications facilitate inventory and replacement, simplify maintenance procedures, and reduce downtime.

Installation and Maintenance Points

Installation Specifications
Clean the shaft and mounting hole surfaces, removing oil, rust, and impurities. Check for scratches and deformation, ensuring a proper fit.

Use press-fitting or special tools for installation. Do not strike to prevent bearing deformation. After installation, check coaxiality and clearance for looseness or jamming.

Use grease as required by the equipment manual to improve lubrication and wear resistance.

Maintenance Recommendations:

Inspect bearings every 800-1000 working hours for wear, deformation, cracks, excessive clearance, and intact surface coating.

Regularly replenish grease, clean surrounding debris, and replace any abnormal parts promptly to prevent accelerated wear of the shaft or bore.