CAT 583-8663 BEARING-SLV-GD

CAT 583-8663 (5838663) YM sleeve bearing (straight sleeve type, no lubrication hole) is primarily compatible with boom pins, steering knuckle pins, or balance beam pins of CAT 980K/982M loaders, D10T/D10R bulldozers, etc. It provides radial support and wear protection under heavy-duty swinging conditions. YM is a high-quality replacement for the MYWAY brand. The core information is as follows:

Core Technical Parameters
Item Details
Part Model: CAT 583-8663 (5838663) Straight Sleeve Bearing (YM brand, steel back + copper alloy bimetallic structure, no lubrication hole, suitable for pin clearance installation)

Core Material: Steel back: Low carbon alloy steel (Q235), thickness 2.5 mm; Inner liner: Tin bronze (CuSn8P), centrifugal casting, surface precision machined (Ra≤0.8 μm), self-lubricating + Wear-resistant, suitable for heavy-duty oscillating conditions.

Key Dimensions: Inner diameter 100 mm, outer diameter 115 mm, length 75 mm, wall thickness 7.5 mm; compatible pin diameter 100 mm (surface hardness HRC≥58); installation tolerance H7/s6 (interference fit 0.02–0.04 mm).

Single Weight: Approx. 2.1 kg.

Compatible Machines: CAT 980K/982M loaders (boom pin/linkage pin), D10T/D10R bulldozers (balance beam pin/rocker arm shaft), 966M loaders (steering knuckle pin). Used in oscillating connection parts such as boom, steering, and suspension, bearing radial heavy loads and oscillating friction.

Working Fit: Maximum radial load 150 kN; operating temperature -20℃ to +120℃; compatible with lithium-based grease (NLGI 2); wear life ≥5000 cycles. Working Hours

Core Functions and Structural Features

Bimetallic Composite Structure: The steel backing provides high-strength support, while the tin bronze liner offers excellent friction reduction and embedding properties, accommodating minute impurities. With a friction coefficient f≤0.15, it is suitable for heavy-duty oscillating conditions, reducing wear on pins and holes.

No Lubrication Hole Design: Suitable for pre-lubricated pins or centralized lubrication systems, oil is supplied through the pin lubrication channel, avoiding localized wear caused by blocked lubrication holes, suitable for harsh working conditions.

Interference Fit Fixing: The outer diameter and mounting hole have an interference fit (0.02–0.04 mm), ensuring no looseness after installation, guaranteeing coaxiality, suppressing oscillation and eccentricity, and reducing vibration and noise.

Impact and Deformation Resistance: The steel backing + copper alloy structure has a yield strength ≥300 MPa, capable of withstanding impact loads and load fluctuations in engineering machinery, preventing bearing deformation and cracking, and extending component life.

Installation and Maintenance Points

Installation Specifications: Clean the mounting holes and pins. The surface roughness of the mounting holes should be Ra≤1.6 μm, the pin diameter tolerance h6 (0–-0.035 mm), and the surface hardness HRC≥58.

Assemble using cold pressing or heating the mounting holes (≤100℃). The bearing end face should be flush with the mounting hole end face. Control the interference fit within 0.02–0.04 mm to avoid excessive interference fit that could cause bearing deformation.

After installation, apply lithium-based grease (NLGI 2) to ensure adequate lubrication between the pin and the liner.

Maintenance Recommendations: Check every 800 working hours: bearing clearance >0.2 mm, liner wear, surface scratches. Replace any faulty parts immediately. Simultaneously check pin wear (>0.1 mm requires repair).

When replacing parts, prioritize original equipment manufacturer (OEM) parts or YM-certified parts to ensure material, dimensional accuracy, and surface treatment meet standards.

Simultaneously check the lubrication system, clean lubrication channels to ensure effective lubrication and reduce the risk of secondary failures.