CAT 625-7409 38.2mm Inner Diameter Tilt Cylinder Bearing

CAT 625-7409 is a Caterpillar genuine tilt cylinder bearing with an inner diameter of 38.2mm. It is used at the hinge of the bucket tilt cylinder in skid steer loaders, mini loaders, and other equipment. Its core function is to reduce friction between the cylinder body and the frame/arm, ensuring smooth cylinder extension and tilting movements, while also bearing radial loads. It is a key wear-resistant component of hydraulic actuators (Cat®…).

Core Technical Parameters

Item Details
Part Model CAT 625-7409 Tilt Cylinder Bearing (Inner Diameter 38.2mm)

Material Steel-backed Bronze Composite Material (Steel Back + Bronze Alloy Layer + PTFE Self-lubricating Layer), wear-resistant, self-lubricating, suitable for high-frequency oscillating conditions of hydraulic cylinders, no additional lubrication required

Key Dimensions Inner Diameter 38.2mm (1.504in), Outer Diameter approx. 50.8mm (2in), Length approx. 40-42mm, compatible with standard tilt cylinder pin diameter, installation clearance 0.05-0.10mm

Compatible Models Skid Steer Loaders 242D/246D/252D, Mini Loaders 906M/907M, Compact Excavators 303.5E2, etc., used for the upper/lower hinge point of the bucket tilt cylinder

Performance Characteristics Self-lubricating design reduces friction, wear, and maintenance frequency; the steel-backed bronze layer boasts high load-bearing capacity, suitable for high-pressure hydraulic system conditions; adaptable to ±15° cylinder swing angles, ensuring precise operation; oil-resistant and aging-resistant, suitable for hydraulic oil and outdoor operating conditions.

Core Functions and Structure

Articulation Friction Optimization: The PTFE self-lubricating layer reduces the coefficient of friction between the cylinder pin and bearing, reducing operating resistance and preventing component wear caused by dry friction, suitable for high-frequency extension, retraction, and tilting movements of the cylinder.

Radial Load Bearing: The steel-backed bronze composite material provides stable radial load-bearing capacity, withstanding impact loads during bucket operation, preventing bearing deformation, ensuring the coaxiality of the cylinder and frame/arm, and preventing operational jamming.

Operating Condition Adaptability and Protection: The material is resistant to hydraulic oil corrosion, suitable for equipment hydraulic system conditions; its self-lubricating properties reduce lubricant usage, lower maintenance costs, and are suitable for harsh outdoor operating environments.

Installation and Maintenance Points

Installation Specifications:
Clean the bearing mounting holes and cylinder pin surfaces to remove oil, rust, and impurities. Check the bearing inner hole for scratches and deformation, ensuring a flat mounting surface to prevent uneven bearing load after installation.

Use cold pressing installation (using specialized tooling) to press the bearing into the mounting hole. Do not directly strike the bearing end face with a hammer to prevent separation of the steel backing from the bronze layer, which will affect its service life.

After installation, check the clearance between the bearing and pin to ensure the cylinder swings smoothly without jamming and the pin does not move axially. Tighten the bolts to 35-45 N·m to prevent loosening.

Maintenance Recommendations:
Check every 200-300 working hours: For bearing wear and loosening, check for abnormal noises and jamming in the cylinder. Replace the bearing immediately if excessive clearance (>0.20mm) or surface damage is found.

Regularly clean the cylinder hinge area to remove dirt, gravel, and other impurities to prevent them from entering the bearing and accelerating wear. No additional grease is needed; the self-lubricating layer is sufficient for operating conditions.