Description
CAT 314-8632 BEARING-GD
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CAT 314-8632 YM is a Caterpillar genuine straight-tube steel-backed aluminum-coated sleeve bearing (shoulder sleeve), suitable for low-speed, heavy-load oscillating parts such as pins, connecting rods/rocker arms, etc. The following is purely precise information (without additional description):
Core Parameters and Information
Item Details
Part Model: CAT 314-8632 (3148632) YM Straight-tube Sleeve Bearing
Part Type: Steel-backed aluminum-based alloy sleeve bearing, suitable for pins and frames/connecting rods, bearing radial loads, used in low-speed oscillating or rotating conditions
Material: Steel backing + high-tin aluminum-based alloy (AlSn20Cu), hardness HB25-35, surface tin plating thickness 5-8μm, inner hole with axial lubrication groove + radial oil hole
Key Dimensions: Inner diameter 41.28mm, outer diameter 47.62mm, total length 28.58mm, wall thickness 3.17mm, chamfered 0.5×45°
Structural Features: Straight cylinder, no flange, uniaxial lubrication groove in the inner bore + 2 radial oil holes (φ2.5mm), compatible with 41.28mm pins, clearance 0.04-0.07mm
Compatible Structure: Pin fit tolerance h6, seat bore fit tolerance H7, operating temperature -30℃ to +120℃, maximum bearing pressure 140MPa
Lubrication Requirements: Recommended CAT 1U-8889 lithium-based grease, filling amount 2/3 of the bearing-pin clearance, replenish grease every 500 working hours
Compatible Machines and Assemblies:
Excavators: CAT 307E2, 308E2, 309E2 (boom connecting rod pin, boom cylinder connecting rod bushing)
Loaders: CAT 903C, 904B (boom rocker arm pin, bucket connecting rod bushing)
Compatible Assembly: 307E2 Stick connecting rod pin bearing assembly, 903C boom rocker arm bushing assembly
Matching parts: 314-8632 sleeve bearing, 8T-4125 pin, 161-8220 sealing ring, 5P-1949 bearing cup
Installation and fitting points:
Clean the pin, seat hole, and bearing, ensuring no iron filings or oil contamination; cold press installation, pressure ≤25kN, avoid striking the end face to prevent deformation.
Seat hole H7, pin h6, ensure the rear end faces fit snugly without gaps, pin rotation without jamming, radial clearance 0.04-0.07mm.
Fill the lubrication groove with grease in the oil hole, check for leaks before installation.
Use a special puller for disassembly. When replacing, check pin wear ≤0.1mm; if exceeding the tolerance, replace the pin simultaneously.
