Single-acting hydraulic cylinders

A single-acting hydraulic cylinder produces hydraulic force in one direction. Choose a cylinder with transverse mounting holes or a standard version without pre-drilled mounting holes. Compare the mounting, dimensions and stroke before selecting a variant.

Check the return movement first

Oil pressure extends these cylinders. Retraction requires the load, gravity or another external force from the machine. The installation must allow this return movement. If you need hydraulic force in both directions, compare the double-acting cylinders.

Double-acting hydraulic cylinders

Choose the right version

With transverse mounting holes

With a mounting hole at the base and in the rod end. Compare the hole diameter, mounting dimensions and centre-to-centre length with the machine mounting.

Size groups: 30/25, 40/30, 50/40, 60/50.
22 variants.

View cylinders — With transverse mounting holes

Standard

Without pre-drilled mounting holes at the base or rod end. Check how the cylinder will be mounted in your structure and compare the overall dimensions with the drawing.

Size groups: 40/30, 50/40, 60/50.
15 variants.

View cylinders — Standard

Which size and stroke do you need?

The size code 40/30 means a 40 mm bore and a 30 mm rod diameter. It does not specify the mounting-hole diameter. Stroke is the extension travel. Check installation space and load as well; do not select by the size code alone. All dimensions below are in millimetres.

VersionSize group and productAvailable strokes (mm)
With transverse mounting holes30/25100, 150, 200, 250, 300
With transverse mounting holes40/30200, 250, 300, 350, 400, 550
With transverse mounting holes50/40200, 250, 300, 350, 400, 550, 700
With transverse mounting holes60/50300, 400, 550, 700
Standard40/30200, 250, 300, 350, 400, 500
Standard50/40200, 300, 400, 500, 600
Standard60/50300, 400, 500, 600

Choose directly by SPH code

Once you know the size and stroke, open the relevant version and select the SPH code. Tables can be scrolled sideways on narrow screens.

With transverse mounting holes — 22 variants
SPH codeSize groupStroke (mm)
SPH34055630/25100
SPH34055730/25150
SPH34055830/25200
SPH34055930/25250
SPH34056030/25300
SPH34056140/30200
SPH34056240/30250
SPH34056340/30300
SPH34056440/30350
SPH34056540/30400
SPH34056640/30550
SPH34056750/40200
SPH34056850/40250
SPH34056950/40300
SPH34057050/40350
SPH34057150/40400
SPH34057250/40550
SPH34057350/40700
SPH34057460/50300
SPH34057560/50400
SPH34057660/50550
SPH34057760/50700
Standard — 15 variants
SPH codeSize groupStroke (mm)
SPH34054140/30200
SPH34054240/30250
SPH34054340/30300
SPH34054440/30350
SPH34054540/30400
SPH34054640/30500
SPH34054750/40200
SPH34054850/40300
SPH34054950/40400
SPH34055050/40500
SPH34055150/40600
SPH34055260/50300
SPH34055360/50400
SPH34055460/50500
SPH34055560/50600

Installation length: use the correct measuring points

For the version with transverse mounting holes, the drawing length is measured between the centres of the mounting holes. For the standard version, it is the overall length from the rear face of the cylinder base to the rod tip. These are different measurements. Use the measuring points on the product drawing and check both the retracted and extended positions.

Working pressure and load

The recommended working pressure for these cylinder groups is 180 bar; the maximum pressure is 250 bar. Also check stroke, mounting, alignment and load for your application. Maximum pressure alone does not determine whether a cylinder suits your machine.

Single-acting or double-acting?

Choose single-acting when you need hydraulic force in one direction and the machine can provide the return movement. For hydraulic extension and retraction, choose double-acting. For several extending stages, compare telescopic cylinders. Check hoses, fittings and controls for compatibility with the complete system.

Frequently asked questions

How does a single-acting cylinder retract?

These cylinders are not hydraulically pulled back through a second oil port. The load, gravity or another external force from the machine must provide the return movement.

What is the difference between standard and transverse-hole versions?

The transverse-hole version has mechanical mounting holes at both ends. The standard version does not have these pre-drilled holes. Length measuring points also differ; check the product drawing.

Can I replace a cylinder with another of the same stroke?

Compare all other dimensions first: size group, mounting, installation length, available space, system pressure and hydraulic connection. Check that the machine can still provide the return movement.

What information helps me choose?

Note the version, required stroke, mounting dimensions, and retracted and extended lengths with clear measuring points. A photo of the existing cylinder and machine mounting helps.

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