613-5783: Sleeve Bearing

Cat 613-5783 is a Caterpillar steel sleeve bearing/bushing. Its core function is radial support and friction reduction in the articulation points of heavy machinery, suitable for high-load, low-speed conditions. The following are precise core information:

Core Parameters (Precise Version)

Item Details
Basic Information
Model 613-5783, type is sleeve bearing (no oil groove/oil hole), used for the friction pair between the hinge pin and the seat hole, bearing radial loads, suitable for the hinge points of the boom, rocker arm, connecting rod, etc., of loaders, bulldozers, etc. (Cat® Parts)

Compatible Models
Compatible with Cat 950, 966, 988 series loaders, D8L/D8N/D8R bulldozers, 777 mining trucks, 627E scrapers, etc., commonly used for boom pins and rocker arm hinge points, suitable for connection structures with pin diameters of approximately 70mm

Material and Manufacturing Process
Material is 42CrMo Alloy steel, forged and tempered, hardness HRC32-38, nitrided surface with a nitriding layer depth of 0.3-0.5mm, surface hardness HV850-1000, friction surface roughness Ra≤0.8μm, tolerance fit H7/g6Cat® Parts
Key Dimensions: Inner diameter 70mm, outer diameter 85mm, total length 65mm, wall thickness 7.5mm, C2 chamfer at both ends, weight approximately 1.8kg, compatible pin diameter 70mm, seat hole diameter 85mm, compatible clearance 0.03-0.05mm
Matching Parts: Compatible pin model 10-3222 (diameter 70mm, length 200mm), lithium-based grease recommended (model…). (10-9275) During installation, the seat hole and pin surfaces must be cleaned to ensure the mating surfaces are free of impurities.

Function, Installation, and Maintenance Points

Core Function: Reduces the coefficient of friction at the hinge, minimizes wear, evenly distributes radial load, protects the pin and seat hole, adapts to heavy-load and vibration conditions, and extends the service life of Cat® Parts hinge components.

Installation Points: Use specialized tooling during press-fitting to avoid bushing deformation; check coaxiality after press-fitting, radial runout ≤0.05mm; apply grease after installation to ensure adequate lubrication.

Maintenance Points: Check lubrication status every 200 hours and replenish grease every 500 hours; replace immediately if bushing wear, excessive clearance (greater than 0.15mm), or surface scratches or peeling are found to prevent abnormal wear of the pin and seat hole.