CAT 423-4802 BEARING-SLEE

CAT 423-4802 is a Caterpillar genuine straight sleeve bearing (shoulder sleeve), suitable for connecting rods/pivots in engineering machinery. The following is purely precise information (no additional description): Cat®…

Core Parameters and Information

Item Details
Part Model: CAT 423-4802 (4234802) Straight Sleeve Bearing

Part Type: Straight sleeve bearing, used in connecting rods, pivots, rocker arms, etc., bearing radial loads and supporting relative rotation, suitable for medium-to-low speed heavy-duty conditions.

Material: Base: Low carbon alloy steel (SAE 1045), surface carburized, quenched, and tempered, hardness HRC58-62; inner hole precision ground, roughness Ra≤0.4μm, suitable for grease/oil lubrication.

Key Dimensions: Inner diameter 50.00mm (1.9685in), outer diameter 63.50mm (2.5000in), total length… 75.00mm (2.9528in), wall thickness 6.75mm, chamfered ends 1×45°, fit tolerance H7/s6
Structural features: No oil groove or oil hole (suitable for centralized lubrication), flangeless straight cylinder structure, rated radial load 180kN, operating temperature -20℃ to 120℃, static radial clearance 0.010-0.020mm
Compatible structure: Connecting rod and pivot mating parts, compatible with pin CAT 423-4801, installation interference 0.015-0.025mm
Applicable working conditions: Connecting rod rotating parts, speed ≤1000rpm, radial load ≤150kN, compatible with lithium-based grease (NLGI 2) or ISO VG46 hydraulic oil lubrication
Compatible models and assemblies:
Excavators: CAT 320D, 323D, 330D (boom/ (Boom and Linkage Rod Sleeve Bearing Assembly)

Loaders: CAT 938M, 950M, 966M (Rocker Arm/Linkage Rod Sleeve Bearing Assembly)

Road Rollers: CAT CS64B, CS74B (Articulated Frame Pivot Sleeve Bearing Assembly)

Compatible Assemblies: 320D Boom and Linkage Rod Sleeve Bearing Assembly, 950M Rocker Arm Pivot Sleeve Bearing Assembly

Installation and Fitting Points

Before installation, clean the journal and mounting hole, ensuring no burrs or rust. Use cold pressing for installation, pressing in with a special press tool. Do not directly strike the bearing end face to prevent deformation.

After installation, ensure an interference fit (0.015-0.025mm) between the bearing and the mounting hole, and a clearance fit (0.010-0.020mm) with the pin, ensuring smooth and unobstructed rotation.

After assembly, check the coaxiality to ≤0.02mm. Apply grease promptly after installation to ensure adequate lubrication.

Use a special puller to remove the bearing during disassembly. Do not pry the bearing edges. When replacing, check the wear of the journal and mounting hole. If the wear is greater than 0.05mm, it needs to be repaired or replaced.