CAT 608-5569 Sleeve Bearing

CAT 608-5569 is a steel-backed bronze sleeve bearing used by Caterpillar for steering and transmission systems in wheel loaders, graders, and other equipment. It is suitable for steering pivots, connecting rods, and other parts of Cat 950M, 962M, and other models, and plays a role in supporting radial loads, reducing friction, and meeting the stable operation requirements under heavy load conditions. The following is structured technical and application information:

Core Technical Parameters

Item Details
Basic Attributes
Model 608-5569, Type: Straight sleeve bearing (no inner or outer ring, steel back bronze material), Structure: Integral cylindrical, Material: Low carbon steel back + bronze alloy layer (alloy layer thickness 0.5-0.8 mm), Single weight: Approximately 0.35 kg, Operating temperature: -30℃ to +120℃, Design life: ≥8000 hours (normal operating conditions), Lubrication method: Grease lubrication (NLGI Grade 2 lithium-based grease), Suitable for radial support positions such as steering pivots and connecting rods

Key Dimensions
Inner diameter: 63.5 mm (tolerance 0/+0.02 mm), Outer diameter: 76.2 mm (tolerance 0/-0.015 mm), Width: 50.8 mm (tolerance ±0.10 mm), Alloy layer thickness: 0.5-0.8 mm, Corner radius: R1.0 mm, Shaft fit clearance 0.04-0.06 mm, interference fit with bearing housing 0.015-0.025 mm, radial runout ≤0.05 mm
Compatible Models and Replacement Parts: Compatible with Cat 950M, 962M wheel loaders, 140M, 160M graders, etc., suitable for steering mechanisms, connecting rods, etc.
Performance Parameters: Rated dynamic radial load 25 kN, rated static radial load 60 kN, coefficient of friction ≤0.004 (good lubrication conditions), limiting speed 2000 rpm (grease lubrication), impact strength ≥40 J/cm², steel backing tensile strength ≥420 MPa, bronze alloy hardness HB80-100
Structural and Performance Advantages: The steel backing + bronze alloy layer structure combines high strength with excellent friction reduction. The bronze layer can embed impurities, making it suitable for dusty and heavy-duty working conditions in construction machinery, reducing wear on shafts and bearing housings, and extending component life.

The integrated cylindrical design facilitates easy installation and fits compact installation spaces. It effectively transmits and distributes radial loads, ensuring stable operation of steering and transmission mechanisms while reducing vibration and noise.

Compatible with various heavy-duty models, it boasts high versatility and interchangeability with original equipment manufacturer (OEM) parts. This simplifies procurement and inventory management, reduces maintenance costs, and increases equipment uptime.