Tie Rod Hydraulic Cylinders & Parts

Hydraulic cylinders use threaded tie rods to clamp the cylinder barrel, head and cap together. The correct rod, hardware and sealing arrangement depend on the cylinder manufacturer and design. McCann can help identify compatible repair parts when supplied with machine details, the cylinder function and available identification numbers.

A tie rod hydraulic cylinder converts hydraulic pressure into controlled linear movement. On construction equipment, cylinders operate functions such as excavator boom, arm and bucket movement, loader lift and tilt, backhoe stabilisers, and other implement functions. Leakage, drifting or reduced performance may indicate seal failure or internal component damage.

A typical rebuild kit may include a rod seal, piston seal, rod wiper or scraper, O-rings and backup rings. Depending on the cylinder, it may also include a rod bearing, wear ring or gland static seal. Exact contents vary, so confirm the kit against the cylinder identification and machine serial number before ordering.

A rebuild may be suitable when the bore is sound, the rod is straight and the chrome remains intact. A bent or badly scored rod, deep bore damage or a cracked gland can make replacement or a remanufactured exchange unit more appropriate. McCann quotes the rebuild path after the cylinder is stripped and inspected.

Provide the machine make, model and serial number, the cylinder function, such as boom, bucket, lift or outrigger, and any cylinder tag or casting number. Bore and rod details can also help. Correct identification matters because part numbers, kit contents, seal materials and compatibility vary between cylinder manufacturers and applications.

Repeat seal failure can result from a scored or pitted rod, a damaged wiper, contaminated hydraulic fluid, filtration problems or related hose and system issues. Replacing seals without addressing the cause may lead to another failure. Inspection, fluid cleanliness checks and attention to the rod and filtration can support a more durable repair.