564-6964: Push Arm Bearing

CAT 564-6964 is a Caterpillar pusharm sleeve (Sleeve Bearing for Lift Arm/Push Arm) specifically designed for use on pusharms/booms of heavy equipment such as loaders and bulldozers. It is used for medium-to-heavy load, low-to-medium speed swinging applications. Key information is as follows:

Key Parameters
Item Details
Type: Straight sleeve, no taper, withstands pure radial loads, fits the clearance fit between the pusharm pin and the mounting hole, used for support of the hinged joint.
Dimensions (Metric/Imperial): Inner diameter approx. 95.25 mm (3.75 inches), outer diameter approx. 101.6 mm (4 inches), length approx. 101.6 mm (4 inches), fits corresponding Cat pusharm pins and mounting brackets.
Material: Steel backing + copper-lead alloy anti-friction layer + tin-lead anti-scratch plating. The steel backing ensures structural strength, the copper alloy layer reduces friction and fatigue, and the plating reduces assembly and start-up friction.
Structure No oil groove or oil injection hole; compatible with centralized lubrication systems, relying on the gap between the pin and bushing for oil storage lubrication, suitable for periodic grease injection maintenance.

Precision: High-precision machining of inner and outer diameters, surface roughness Ra≤0.8μm, ensuring a tight fit with the pin and mounting base, reducing shaking and abnormal noise at the hinge.

Suitable for: Cat loaders (such as the 966M/972M series), bulldozers (such as the D6T/D7E series), and other equipment, for the hinge points of the boom, arm, and frame, as well as the pin supports for swing components such as the bucket and connecting rod, reducing wear on the pin and mounting base and extending the life of the hinge components.

Suitable for medium-to-heavy load, medium-to-low speed swinging conditions in construction, mining, and other applications, adapting to the centralized lubrication and periodic maintenance needs of equipment, improving the smoothness of boom/arm operation.

Performance Characteristics: Steel backing + copper-lead alloy composite structure, impact-resistant and fatigue-resistant, with approximately 40% longer service life than ordinary steel bushings, suitable for high-load conditions of heavy equipment. The oil-free design allows for centralized lubrication, simplifying maintenance procedures and reducing maintenance costs for hinged parts.

High-precision dimensions and surface finishing ensure good contact with pins and mounting bases, reducing friction loss and component noise, and improving equipment operating efficiency.