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Telescopic Cylinders

Single and double-acting telescopic hydraulic cylinder. 2-7 stages, total stroke 100–12,600 mm. For tipping semi-trailers, tractors, mining bodies, mobile platforms and waste compactor vehicles.

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Real production model

An actual cylinder from SOLIDWORKS production data. Drag to rotate and inspect.

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drag · button to extend/retract

Technical specs

Spec

Type: Single-acting · Double-acting
Number of stages: 2-7
Stroke: 100–12,600 mm
Push force: Per application, calculated from bore + pressure
Rated pressure: 250 bar as standard, higher to drawing
Test pressure: To drawing, otherwise 1.5 × nominal pressure (ISO 10100)
End cushioning: Internal cushion · external stop ring

Built to your drawing

These values are typical production ranges. Any combination of bore, stroke, pressure and mounting type is built to the customer's drawing or load profile and produced in series. The seal brand is entirely the customer's choice; the requested brand is sourced and fitted.

Application

Typical use

Tipping semi-trailer

Lifting a heavy body to a high angle (single-acting).

Tractor & trailer

Tractor-trailer tipping system, semi-trailer applications.

Mining body

Open-pit truck body, heavy aggregate hauling.

Double-acting telescopic

Crane boom extension, waste compactor, controlled retract.

Material

Construction

Stage tubes: EN 10305-1 E355, H8/H9; outside hard-chrome plated (on our own line, with approved platers for extra capacity)
Inner rod: C45E (Ck45) or 42CrMo4, hard-chrome plated
Heads and pistons: C45
Caps and other welded parts: Weldable St52
Seal set: NBR · HNBR · PU · FKM (customer choice)

Standard

Reference standards

EN 10305-1 tube standard
Customer drawing (telescopic geometry per drawing)
ISO 10100 acceptance test
EN 10204 3.1 inspection certificates for tube and rod, on request

Standard titles are dimensional references; certificates are supplied per product on request.

Telescopic cylinder types

Single vs double-acting telescopic

Single-Acting Telescopic

Single port (base). Stages extend in sequence under hydraulic pressure; return by gravity or load. Simple build, fewer seals, fewer internal passages.

Dump truck, waste compactor, semi-trailer tipping

Double-Acting Telescopic

Each stage has a retraction piston face + base/rod-end porting. Extends and retracts under hydraulic pressure. More complex build: for applications where extend/retract control is critical. Significantly higher cost than single-acting telescopic due to added seals, retract piston faces and porting.

Crane boom, mobile platform outrigger, mining body

Stage stop: impact managed by internal cushion + external stop ring.

Stage tube plating

Hard chrome on stage tubes

The outside of every telescopic stage tube is hard-chrome plated, on our own line, with approved platers for extra capacity. Plating is min. 20 µm per side (40 µm on the diameter), typically 30 µm per side.

Plating

Typically 30 µm per side, min. 20 µm

Tube standard

EN 10305-1 E355