CAT 314-8642 BEARING-GD

CAT 314-8642 YM is a Caterpillar genuine straight-tube steel-backed aluminum-coated sleeve bearing, suitable for use in construction machinery pins, connecting rods, or rocker arms, etc., to bear radial loads and provide wear-resistant support. The following is purely accurate information (without additional description):

Core Parameters and Information

Item Details
Part Model: CAT 314-8642 (3148642) YM Straight-tube Sleeve Bearing (Sleeve)

Part Type: Steel-backed aluminum-based alloy sleeve bearing, used in pin and connecting rod/frame mating parts, bearing radial loads, suitable for 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 includes axial lubrication groove and radial oil hole

Key Dimensions: Inner diameter 44.45mm, outer diameter 50.80mm, total length 31.75mm, wall thickness 3.175mm, chamfered 0.5×45°
Structural Features: Straight cylinder without flange, inner bore with uniaxial lubrication groove + 2 radial oil holes (φ2.5mm), compatible with 44.45mm diameter pins, clearance 0.05-0.08mm
Compatible Structure: Compatible with 44.45mm pins, installation tolerance H7 (seat hole)/h6 (pin), operating temperature -30℃ to +120℃, maximum load pressure 150MPa
Lubrication Requirements: Requires forced grease lubrication, CAT 1U-8889 lithium-based grease recommended, fill to 2/3 of the bearing-pin clearance, replenish grease every 500 working hours
Compatible Models and Assemblies:
Excavators: CAT 312D2, 313F, 314E LCR (boom/stick connecting rod pins, bucket pin sleeves)
Loaders: CAT 906M, 908M (Boom and Rocker Arm Pins, Connecting Rod Bushings)

Compatible Assemblies: 312D2 boom and connecting rod pin and bearing assembly, 906M boom and rocker arm bushing assembly

Matching Parts: 314-8642 sleeve bearing, 8T-4125 pin, 161-8220 sealing ring, 5P-1949 bearing cup

Installation and Fitting Points:

Before installation, clean the pins, bearing housing holes, and bearings, ensuring they are free of metal shavings and oil. Use cold-press installation; pressure ≤30kN. Do not strike the bearing end face, as this may cause deformation.

Housing hole fit tolerance H7, pin fit tolerance h6. After installation, the bearing end face should fit snugly against the housing hole without gaps, and the pin should rotate without jamming. Radial clearance 0.05-0.08mm.

After installation, inject grease through the oil hole, ensuring the grease fills the inner lubrication groove. Check for leaks before installing on the machine.

Use a special puller for disassembly to avoid damaging the seat hole or pin. When replacing, check the wear of the pin (≤0.1mm). If it exceeds the tolerance, the pin must be replaced at the same time.