Typical fitment
Telescopic Boom Cylinder
Multi-stage telescoping cylinder with integrated load-holding valve for boom extension and retraction.
Specification
| Type | Double-acting, single or multi-stage telescopic |
|---|---|
| Bore range | 80 – 320 mm |
| Stroke | Built to the original closed and extended length |
| Safety | Integrated load-holding / counterbalance valve |
| Rod finish | Induction-hardened, hard chrome plated |
| Seals | NBR, PU or Viton kits available |
Typical specification for this component family. The exact variant is confirmed against your machine's make, model and serial number at quotation.
About this part
Telescoping cylinders operate inside the boom under high side load and are among the most demanding hydraulic components on a crane. Internal leakage past a worn piston seal produces boom creep under load, while a scored rod invites contamination that will damage the rest of the circuit.
We supply complete telescope, luffing and outrigger cylinders as well as the parts to rebuild them: chrome rods, piston and gland assemblies, wear rings, load-holding and counterbalance valves, and complete seal kits in nitrile, polyurethane or Viton for high-temperature service.
Measure bore, rod diameter, closed length and stroke — and note the mounting eye and port arrangement — and we will match the cylinder from those dimensions.
Ordering information
To quote accurately we need the equipment make, model and serial number, plus the part number or a photograph of the component and its nameplate.
