CAT 078-5296 HITCH PIN CL

CAT 078-5296 is a Caterpillar genuine hydraulic cylinder connecting pin (hinged pin), compatible with the boom/stick cylinders and frame/link articulation points of Cat® 306E/307E excavators, 226B3/246B3 skid steer loaders, and other models. It transmits hydraulic thrust and withstands alternating loads, ensuring connection strength and motion accuracy during operation.

Cat® 078-5296 is a genuine Caterpillar hydraulic cylinder connecting pin (hinged pin), suitable for the boom/stick cylinders and frame/link articulation points of 306E/307E excavators, 226B3/246B3 skid steer loaders, etc.

It is used to transmit hydraulic thrust and withstand alternating loads, ensuring connection strength and motion accuracy during operation. Core Parameters and Information

Item Details
Part Model: CAT 078-5296 (0785296) Hydraulic Cylinder Connecting Pin
Structure Type: Solid cylindrical pin, with oil passages at both ends, chrome-plated surface, equipped with locking plate/cotter pin for anti-loosening
Material: 4140 alloy structural steel, quenched and tempered, hard chrome plating (thickness 0.05-0.08 mm)
Key Dimensions: Diameter 25 mm, Length 85 mm, Center oil hole diameter 3 mm, Chamfered ends 1×45°, Fitting hole diameter 25 mm, Fitting clearance 0.01-0.03 mm
Performance Parameters: Surface hardness HRC 58-62, Tensile strength ≥1000 MPa, Yield strength ≥800 MPa, Fatigue life ≥10^6 cycles, Salt spray test ≥96 hours without corrosion
Compatibility Standard: Complies with ISO 898-1, SAE J429, compatible with 306E/307E Boom and stick cylinders for excavators and 226B3/246B3 skid steer loaders.

Matching components: 078-5297 locking plate, 078-5298 cotter pin, 078-5299 bushing, used at the hinge points between the cylinders and the frame/connecting rod.

Compatible Models and Applications:
Compatible Equipment: 306E/307E mini excavators, 226B3/236B3/246B3 skid steer loaders, etc.

Applications: Installed at the lower hinge point of the boom cylinder and both ends of the stick cylinder, transmitting cylinder thrust and bearing radial loads. Suitable for medium-high pressure and high-frequency operating conditions, ensuring smooth and jam-free boom/stick movement, improving work efficiency and safety.

Compatible with: 078-5297 locking plate, 078-5298 cotter pin, 078-5299 bushing and corresponding sealing ring. Ensure adequate lubrication of the bushing during installation to prevent wear caused by dry friction.

Installation and Maintenance Points: Clean the pin hole, bushing, and pin surface, checking for deformation, cracks, and rust. Ensure the bushing is well lubricated.

Install the bushing and pin in sequence. After insertion, secure with the locking plate and cotter pin, ensuring no axial movement of the pin and no gaps at the connection.

After installation, check that the radial clearance is ≤0.05 mm, all components rotate freely without jamming, and there are no abnormal noises at the hinges.

Maintenance: Check the wear of the pin and bushing every 500 hours. Replace immediately when wear exceeds 0.1 mm. Regularly add grease; shorten the maintenance cycle under harsh operating conditions.