CAT 126-0788 BEARING

CAT 126-0788 is a Caterpillar genuine straight-tube wear-resistant bushing (sleeve bearing), suitable for rotating parts of loaders, excavators, and other working devices. The following is purely accurate information (no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 126-0788 (1260788) Straight-tube Wear-resistant Bushing

Part Type: Straight-tube bushing, used for rotating support between the working device’s connecting rod, rocker arm, and frame, bearing radial loads, suitable for low-to-medium speed, light-to-medium load conditions

Material: Low-carbon alloy steel, surface hardened + tempered, hardness HRC52-58, precision ground inner hole, roughness Ra≤0.8μm, compatible with lithium-based grease (NLGI 2)

Key Dimensions: Inner diameter 50.80mm (2.000in), outer diameter 63.50mm (2.500in), total length 50.80mm (2.000in), wall thickness… 6.35mm, chamfered ends 1×45°, fit tolerance H7/r6

Structural Features: Flanged straight cylinder structure, no oil groove or oil hole (suitable for centralized lubrication), rated radial load 42kN, operating temperature -20℃ to 110℃, static radial clearance 0.012-0.022mm

Compatible Structures: Compatible pin diameter 50.80mm, mounting hole diameter 63.50mm, installation interference 0.015-0.025mm

Applicable Working Conditions: Rotating parts of the working device, speed ≤500rpm, radial load ≤30kN

Compatible Machines and Assemblies:

Loaders: CAT 950H, 962H (boom and rocker arm bushing assembly)

Excavators: CAT 320D, 323D (stick and connecting rod bushing assembly)

Compatible Assemblies: 950H boom and rocker arm bushing assembly, 320D Stick Connecting Rod Bushing Assembly Installation and Fitting Points: Before installation, clean the mounting holes and the outer diameter of the bushing. Use a special press to cold press it in place. Do not strike the end face to prevent deformation.

After installation, ensure an interference fit (0.015-0.025mm) and a clearance fit (0.012-0.022mm) with the pin to ensure smooth and unobstructed rotation.

After assembly, check the coaxiality to be ≤0.02mm. Apply lithium-based grease promptly after installation.

For disassembly, use a special puller to remove the bushing. When replacing, check the pin and mounting hole for wear. If the wear is >0.05mm, repair or replacement is required.