CAT 002-1931 BUSHING

CAT 002-1931 is a Caterpillar genuine cylindrical sliding bushing (pure original factory information, no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 002-1931 (0021931) Bushing

Part Type: Cylindrical sliding bushing, used for positioning at hinge points, absorbing shock, vibration, and off-center loads

Material: Base 42CrMo, Liner CuPb15Sn8, Plating 0.025 mm Lead-Tin Alloy

Key Dimensions: Inner Diameter 55.56 mm (H7), Outer Diameter 76.20 mm (r6), Length 50.00 mm, Chamfered Ends 2×45°

Structural Features: No oil groove or hole, no sealing ring, cylindrical surface fit, integral structure

Surface Treatment: Outer ring blackened with anti-rust oil, inner hole plated with lead-tin alloy

Match Clearance: Inner ring to shaft clearance 0.028–0.042 mm mm, outer ring interference fit with mounting hole 0.020–0.030 mm
Operating temperature -40℃ ～ +120℃
Rated radial load: static 32 kN, dynamic 16 kN
Permissible speed ≤ 50 rpm (with adequate lubrication)
Weight 0.95 kg
Compatible models and assemblies:
Excavators: CAT 308E2, 309E2, 310E2 (boom, stick, bucket articulation points)
Loaders: CAT 909M, 910M, 912M (rocker arm, tie rod articulation points)
Matching parts: 002-1931 bushings, locating pins, elastic retaining rings, extreme pressure lithium-based grease
Installation and fitting points: Clean mounting holes and shaft, deburr and remove rust. Mounting hole roughness Ra≤1.6μm, shaft Ra≤0.8μm.

Cold press fitting, pressing force 6–8 kN. Do not strike or heat during fitting to prevent damage to the lining.

Ensure the clearance/interference fit between the inner ring and shaft, and between the outer ring and mounting hole, meets requirements. After press fitting, rotation should be smooth and free of jamming.

Apply extreme pressure lithium-based grease to the inner bore before assembly. After assembly, the hinge should move freely without abnormal noise.