CAT 465-8512 BEARING-SLEE

CAT 465-8512 is a straight-tube sleeve bearing for positioning the rocker arm shaft of Caterpillar C13B/C15/C18 engines. It is used to control the radial runout and axial movement of the rocker arm shaft and is compatible with excavators 336GC/349GC, loaders 980M/982M, and other equipment. The following is professional structured information from Cat® Parts.

Core Technical Parameters (Professional Version)

Item Details
Basic Attributes Model 465-8512, Straight-tube sleeve bearing, single weight 0.28 kg, 6 pieces per unit (6 cylinders), compatible rocker arm shaft φ35 mm, radial positioning accuracy ≤0.03 mm, with lubrication groove + cross oil holes

Key Dimensions Inner diameter φ35.0 mm (tolerance H7: 0–+0.025 mm), outer diameter φ42.0 mm (tolerance r6: +0.023–+0.041 mm, interference fit), total length 32.0 mm (tolerance ±0.1 mm), lubrication groove width 3 mm × depth 1.5 mm, oil hole φ2.5 mm, surface roughness Ra≤1.6 μm

Material and Process Material is 42CrMo alloy structural steel, quenched and tempered (HB 260–290), surface anodized black (salt spray resistance ≥240) (h) The inner and outer diameters are precision ground, and the interference fit is coated with Cat 105-7900 anti-seize agent. There should be no looseness after installation.

Performance Parameters: Operating temperature -40℃ to +180℃, radial load ≥12 kN, lubrication pressure 0.2–0.4 MPa, suitable oil viscosity 10W-40/15W-40, rated life ≥8000 h

Compatible Models: Engines C13B/C15/C18, equipment including excavators 336GC/349GC, loaders 980M/982M, mining trucks 777G, compatible rocker arm shaft φ35 mm mounting hole

Installation and Maintenance Points: Before installation, clean the cylinder head mounting hole and sleeve surface, check for burrs/rust, apply Cat 105-7900 anti-seize agent to the outer diameter, and press in with a special tool (pressing force 10–15). (kN), ensuring the end face fits snugly with the mounting hole (gap ≤ 0.02 mm).

Positioning control: After installation, use a dial indicator to check the coaxiality of the sleeve inner hole and the rocker arm shaft. If the deviation > 0.03 mm, re-press-fit or replace the sleeve to prevent uneven wear of the rocker arm shaft.

Maintenance requirements: Check for sleeve looseness every 1500 hours. If the rocker arm shaft wobbles/oil leaks, first check the interference fit condition. Replace the sleeve and re-press-fit if necessary.

Troubleshooting: If abnormal wear/noise occurs, check for blockage in the lubrication groove or insufficient oil pressure. Clean the oil passages and replace the oil filter to ensure proper lubrication.