CAT 380-7382 BEARING-SLV-GD

CAT 380-7382 YM is a Caterpillar heavy-duty steel-backed bronze alloy sleeve bearing (shroud). The YM designation represents a high-quality replacement fit, suitable for the boom, stick, or frame articulation parts of loaders, excavators, and other equipment. It is used to withstand oscillating and rotating motions under medium to heavy loads, taking into account wear resistance and impact resistance, and is suitable for long-term stable support requirements under frequent working conditions. The following are the core information and key points:

Core Technical Parameters

Item Details
Part Model CAT 380-7382 (3807382) YM Sleeve Bearing, Heavy-duty Steel Backed Bronze Alloy Bushing, Suitable for Hinged Part Swing Support, Original Factory / YM Quality Single-Piece Supply

Material Steel Backed + Tin Bronze (CuSn10Pb10) Bimetallic Structure, Steel Backed Hardness HB200-240, Bronze Layer Thickness 0.8-1.2mm, Surface Brinell Hardness HB80-100, Oil Porosity 15%-20%, Excellent Self-Lubricating Performance

Key Dimensions Inner Diameter 50mm, Outer Diameter 60mm, Length 80mm; Inner Diameter Tolerance H7 (+0.030mm), Outer Diameter Tolerance g6 (-0.019mm), Fitting Clearance 0.05-0.10mm, Chamfer at Both Ends 1×45°, Suitable for 50mm Diameter Pins

Compatible Models This product is used in CAT 950H/966H loaders, 320D/323D excavators, D6N bulldozers, etc., for boom pins, stick pins, frame articulation points, etc., and is often used with 380-7383 pins and 380-7384 seals.

Performance Parameters: Rated load capacity ≥150MPa, coefficient of friction ≤0.15 (initial value without lubrication), operating temperature -30℃ to 150℃, wear life ≥5000 working hours, compatible with lithium-based grease (NLGI 2), and can withstand moderate impact loads.

Core Functions and Structural Features:

Composite load-bearing compatibility: The steel backing provides high-strength support, and the bronze alloy layer has excellent wear resistance and self-lubricating properties, capable of simultaneously with heavy radial loads, bidirectional light axial loads, and certain impact loads, suitable for the swinging and rotating movements of articulated parts in construction machinery.

Self-lubricating and anti-wear: The bronze layer’s oil-containing pores store grease, reducing friction and wear. It can continue to function normally even with short periods of lubrication interruption, lowering maintenance frequency and making it suitable for dusty and high-vibration environments.

YM Quality Assurance: YM is a high-quality replacement standard. Its dimensional accuracy and material properties are close to the original equipment manufacturer (OEM). It undergoes rigorous testing to meet reliability requirements for non-core operating conditions, offering better value than OEM parts and making it suitable for batch maintenance and replacement.

Easy Installation: The standard cylindrical structure is compatible with universal press-fit tools. No complex adjustments are required after installation. When used with pins, hinged parts can be quickly assembled, improving maintenance efficiency.