A 4-stage telescopic hydraulic cylinder is a multi-stage hydraulic actuator designed to provide long stroke output with a compact retracted size. It is widely used in dump trucks, tipper trucks, semi-trailers, and heavy-duty lifting equipment that require large lifting heights and stable performance.

What Is a 4-Stage Telescopic Hydraulic Cylinder?

A 4-stage telescopic cylinder consists of five sleeves (one base + four moving stages) that extend sequentially under hydraulic pressure.

This design allows a small installation length with a very long extension stroke, making it ideal for dump bodies that require high lifting angles.

Key Features

Compact Installation Size

Retracted length is much smaller than single-stage cylinders.

Ideal for dump trucks with limited under-body space.

Long Stroke and High Lifting Height

Multi-stage structure enables long extension for a high dump angle (40–65°+).

High Load Capacity

Designed to handle heavy loads and frequent lifting cycles.

Suitable for 10T–60T dump bodies depending on specification.

Stable Operation

Smooth, sequential stage movement.

Hard-chromed stages ensure corrosion resistance and wear protection.

Durable Construction

High-strength alloy steel.

High-performance sealing system (Hercules, Parker, Hallite available).

Heat-treated piston rods for extended service life.

Customization Options

As a professional hydraulic cylinder manufacturer, customization includes:

Bore, stroke, and lifting capacity

Installation dimensions

Working pressure

Material and surface finishing

Valve integration

Port sizes and orientations

Seal brands

Working temperature range

Special coatings for salt, chemicals, or mining environments