CAT 374-1462 BEARING-SLV-GD

CAT 374-1462 YM is a bimetallic straight-tube sleeve bearing (steel-backed copper bushing) for Caterpillar engineering machinery. It is suitable for low-to-medium load swinging parts such as the boom/stick articulation and rocker arm of small and medium-sized excavators and loaders. The following is precise technical and application information:

Core Technical Parameters
Item Details
Part Model: CAT 374-1462 (3741462) YM bimetallic sleeve bearing, suitable for pins with a diameter of 30 mm, single weight approximately 0.39 kg (0.86 lb)

Core Material: Steel backing (SAE 1045 low-carbon alloy steel) + inner liner (CuSn6Zn6Pb3 tin bronze, containing solid graphite lubricant), steel backing thickness 2 mm, copper layer thickness 1.5 mm, copper layer hardness HB 80-100, coefficient of friction ≤0.15 under lubrication conditions

Key Dimensions: Inner diameter 30 mm (tolerance H7), outer diameter 36 mm (tolerance H7) (g6), total length 40 mm, two symmetrical axial lubrication grooves in the inner hole, two radial oil holes (180° evenly distributed, 3 mm in diameter), end face chamfer 1×45°

Rated Parameters: Operating temperature -20℃ to +120℃, rated radial load 70 kN, suitable oscillation frequency ≤5 times/minute, pin surface hardness HRC 45-50, installation interference 0.02-0.04 mm

Suitable Working Conditions: Medium to low load, medium to low oscillation frequency hinge parts, suitable for NLGI 2 lithium-based grease lubrication, anti-mud and anti-vibration, suitable for dusty working conditions

Compatible Models: CAT 305.5E2/306E2 excavators (stick-linkage), 906M loaders (rocker arm-boom), 226D3 skid steer loaders (bucket-linkage)

Accessories: Suitable pins 175-4039, bolts 106-7772 (M12×25), grease nipple 1U-8878, used with dust ring 453-2164

Core Functions and Structural Features

Bimetallic Wear Resistance: Strong steel backing, tin bronze liner + graphite self-lubricating, suitable for short-term oil-film-free conditions, preventing metal-to-metal seizing.

Highly Efficient Lubrication: Axial lubrication grooves + radial oil holes ensure even grease coverage of the inner bore, reducing oscillation wear.

Impact Resistance: Bimetallic structure absorbs hinge impact, protecting the pin and mounting hole, suitable for vibration conditions in engineering machinery.

Easy Installation: Straight cylindrical cold-press installation, suitable for confined spaces, no additional positioning parts required, can directly replace old parts.

Installation and Maintenance Points
Installation Specifications: Clean the bearing, mounting hole, and pin, remove burrs and oil stains, check for cracks and copper layer peeling.

Cold-press installation, pressing force ≤30 kN, bearing end face flush with mounting hole, after installation, inner hole roundness ≤0.03 mm, coaxiality ≤0.05 mm.

Fill with lithium-based grease, test run without jamming or abnormal noise, swing clearance ≤0.2 mm.

Maintenance Recommendations: Replenish grease every 400 hours, check wear every 1200 hours. Replace when inner hole wear >0.25 mm or copper layer peeling.

Avoid prolonged dry friction to prevent rapid copper layer wear.