Collection: EMC Series ZDPM ISO 6432 Cushioned Pneumatic Cylinders

Technical information & FAQs

EMC ZDPM Cushioned ISO 6432 Pneumatic Cylinders

EMC Series ZDPM pneumatic cylinders are double-acting ISO 6432 round actuators with adjustable pneumatic end cushioning. They are designed for machinery where a slim mini pneumatic cylinder is required but the piston and attached load also need controlled deceleration as they approach the end of the stroke.

The range combines a stainless-steel round tube, stainless piston rod and magnetic piston sensing with manually adjustable end cushioning. This gives ZDPM a different role from the standard EMC ZDM range: both provide compact ISO 6432 actuation, but ZDPM is the better starting point where repeated end-of-stroke impact, noise or vibration needs to be reduced.

Compare EMC ZDM pneumatic cylinders for the standard magnetic version, browse all EMC pneumatic cylinders, or compare other ISO 6432 pneumatic cylinders.

Adjustable Cushioning Is the Defining ZDPM Feature

When a pneumatic cylinder reaches the end of its stroke, the piston and attached machine load still carry kinetic energy. If that movement stops abruptly, the resulting impact can be transferred into the cylinder, mounting hardware and surrounding machine structure.

ZDPM uses adjustable pneumatic cushioning so the exhaust flow can be restricted as the piston enters the end-cushioning zone. This slows the piston before the final mechanical stop and allows the end-of-stroke behaviour to be tuned to the machine.

That makes the range particularly relevant to repetitive production equipment, transfer mechanisms and handling systems where a standard non-adjustable mini pneumatic cylinder may stop too harshly.

EMC ZDPM Technical Specification

Manufacturer	EMC
Series	ZDPM
Range	Eco-Line
Product Category	Cushioned round pneumatic cylinders
Dimensional Standard	ISO 6432
Operation	Double acting
Current Cylinder Warehouse Bore Sizes	16, 20 and 25 mm
Cushioning	Adjustable pneumatic end-position cushioning
Position Detection	Magnetic piston
Head and Foot	Anodised aluminium
Cylinder Tube	1.4301 / AISI 304 stainless steel
Piston Rod	1.4305 / AISI 303 stainless steel
Seal Material	NBR
Maximum Operating Pressure	10 bar
Temperature Range	-20°C to +80°C

16, 20 and 25 mm Bore ZDPM Pneumatic Cylinders

The current EMC ZDPM catalogue in Cylinder Warehouse covers three common ISO 6432 bore sizes:

16 mm bore pneumatic cylinders — compact cushioned actuation for lighter machine movements.
20 mm bore pneumatic cylinders — general automation, handling and positioning duties.
25 mm bore pneumatic cylinders — increased force with the same slim ISO 6432 body concept.

Bore-Dependent Pneumatic Connections

The pneumatic port and rod connection vary with cylinder diameter, which is why the full EMC part number should be preserved when replacing an existing actuator.

Bore	Pneumatic Port	Piston-Rod Thread
16 mm	M5	M6
20 mm	G1/8	M8
25 mm	G1/8	M10 × 1.25

Stroke Options for Short and Longer Machine Movements

The Cylinder Warehouse EMC data includes ZDPM configurations across a broad spread of strokes, including short 10, 25, 40 and 50 mm movements as well as 80, 100, 125, 200 and 250 mm products depending on bore.

The wider EMC catalogue also includes longer configurations in selected sizes, including a verified ZDPM 25/500 E 25 mm bore × 500 mm stroke pneumatic cylinder. This gives the cushioned ZDPM platform useful reach beyond conventional short-stroke mini-cylinder applications.

Magnetic Position Sensing

ZDPM pneumatic cylinders use a magnetic piston so compatible cylinder switches can provide non-contact position feedback.

This gives automated machinery two useful forms of control: the sensor can confirm where the piston is, while the adjustable cushioning controls how the piston reaches the end of its movement.

Stainless Tube and Stainless Piston Rod

The verified EMC construction uses a 1.4301 stainless-steel cylinder tube and 1.4305 stainless-steel piston rod, with anodised aluminium head and foot components.

This gives ZDPM the slim roundline appearance associated with ISO 6432 pneumatic cylinders while maintaining a robust industrial material specification.

ZDPM or ZDM?

EMC Series	End-of-Stroke Control	Choose It When...
ZDM	Standard configuration	A straightforward magnetic ISO 6432 pneumatic cylinder is required
ZDPM	Adjustable pneumatic cushioning	The piston and attached load need controlled deceleration before the end position

This distinction matters during replacement. If an existing machine is fitted with ZDPM, changing to standard ZDM can remove the adjustable cushioning function even where bore and stroke are identical.

When Adjustable Cushioning Becomes Important

Not every pneumatic movement requires manually adjustable cushioning. On a very slow, lightly loaded mechanism, a simpler actuator may be sufficient.

ZDPM becomes more valuable as piston speed, attached mass or cycle frequency increases. These conditions increase the energy that must be absorbed when the pneumatic cylinder reaches the end of its travel.

Correct cushioning adjustment can help reduce:

End-of-stroke shock
Mechanical noise
Vibration through the machine structure
Stress on cylinder mountings
Repeated impact on attached tooling

Adjustable Cushioning Is Not Speed Control

The cushioning adjustment controls the final deceleration phase near the end of the pneumatic cylinder stroke. It is not intended to set the overall extension or retraction speed of the actuator.

Where full-stroke speed needs to be adjusted, suitable pneumatic flow-control valves should be used in the circuit. The flow control sets the general movement speed, while the ZDPM cushioning is then tuned to manage the final part of the stroke.

Replacing an Existing EMC ZDPM

The full manufacturer part number should be the first reference when sourcing an exact replacement.

For example, ZDPM 16/100 E identifies a 16 mm bore × 100 mm stroke ISO 6432 pneumatic cylinder with an M5 pneumatic port, M6 piston-rod thread, magnetic piston and adjustable end cushioning.

ZDPM 20/100 E uses a 20 mm bore and changes to a G1/8 pneumatic connection and M8 piston-rod thread, demonstrating why simply matching the stroke is not sufficient.

If the exact EMC model is unavailable, browse the ISO 6432 pneumatic cylinder range for alternatives, but preserve the adjustable cushioning requirement when comparing other manufacturers.

ZDPM or a Compact Pneumatic Cylinder?

ZDPM is a slim round ISO 6432 pneumatic cylinder. If the primary requirement is minimum axial installation length rather than a small round body, an EMC compact actuator may be more appropriate.

Compare EMC SFS ISO 21287 compact pneumatic cylinders where the machine is designed around a short-body compact format.

EMC ZDPM Selection Questions

Is EMC ZDPM definitely ISO 6432?

Yes. Verified EMC product data identifies ZDPM as a double-acting ISO 6432 round pneumatic cylinder range.

What makes ZDPM different from ZDM?

ZDPM adds adjustable pneumatic end-position cushioning. This allows the piston deceleration near the end of the stroke to be tuned to the machine.

Is ZDPM magnetic?

Yes. Standard verified ZDPM products use a magnetic piston for compatible non-contact cylinder position sensing.

What bore sizes are currently available?

The current Cylinder Warehouse EMC ZDPM range contains 16, 20 and 25 mm bore pneumatic cylinders.

Does ZDPM use a stainless cylinder tube?

Yes. Verified standard products use a 1.4301 stainless-steel cylinder tube and a 1.4305 stainless-steel piston rod.

What pressure can EMC ZDPM operate at?

The verified standard specification gives a maximum operating pressure of 10 bar.

Can I replace ZDPM with any ISO 6432 pneumatic cylinder?

Not solely from the ISO designation. The alternative should also match bore, stroke, mounting dimensions, pneumatic port, piston-rod thread, magnetic sensing and adjustable cushioning.

Where can I see the standard non-cushioned EMC range?

Browse EMC ZDM pneumatic cylinders for the standard magnetic ISO 6432 range.

Where can I browse all EMC pneumatic cylinders?

Return to the complete EMC pneumatic cylinder range or browse all pneumatic cylinders by manufacturer, standard, bore and stroke.

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26 pneumatic cylinder products in this range.

EMC
ZDPM 25/125 E
25mm bore x 125mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/125 E

£50.19 EX VAT

£60.23 INC VAT

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EMC
ZDPM 25/320 E
25mm bore x 320mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/320 E

£66.47 EX VAT

£79.76 INC VAT

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EMC
ZDPM 25/250 E
25mm bore x 250mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/250 E

£57.89 EX VAT

£69.47 INC VAT

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EMC
ZDPM 25/25 E
25mm bore x 25mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/25 E

£47.85 EX VAT

£57.42 INC VAT

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EMC
ZDPM 25/160 E
25mm bore x 160mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/160 E

£52.53 EX VAT

£63.04 INC VAT

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EMC
ZDPM 25/80 E
25mm bore x 80mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/80 E

£49.04 EX VAT

£58.85 INC VAT

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EMC
ZDPM 25/500 E
25mm bore x 500mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/500 E

£76.14 EX VAT

£91.37 INC VAT

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EMC
ZDPM 25/50 E
25mm bore x 50mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/50 E

£48.80 EX VAT

£58.56 INC VAT

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EMC
ZDPM 25/40 E
25mm bore x 40mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/40 E

£48.47 EX VAT

£58.16 INC VAT

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EMC
ZDPM 25/200 E
25mm bore x 200mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/200 E

£53.97 EX VAT

£64.76 INC VAT

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EMC
ZDPM 25/100 E
25mm bore x 100mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/100 E

£49.62 EX VAT

£59.54 INC VAT

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EMC
ZDPM 25/10 E
25mm bore x 10mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 25/10 E

£54.41 EX VAT

£65.29 INC VAT

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EMC
ZDPM 16/125 E
16mm bore x 125mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 16/125 E

£45.68 EX VAT

£54.82 INC VAT

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EMC
ZDPM 16/250 E
16mm bore x 250mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 16/250 E

£58.25 EX VAT

£69.90 INC VAT

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EMC
ZDPM 16/25 E
16mm bore x 25mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 16/25 E

£42.74 EX VAT

£51.29 INC VAT

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EMC
ZDPM 16/80 E
16mm bore x 80mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 16/80 E

£44.52 EX VAT

£53.42 INC VAT

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EMC
ZDPM 16/50 E
16mm bore x 50mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 16/50 E

£44.13 EX VAT

£52.96 INC VAT

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EMC
ZDPM 16/40 E
16mm bore x 40mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 16/40 E

£43.56 EX VAT

£52.27 INC VAT

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EMC
ZDPM 16/100 E
16mm bore x 100mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 16/100 E

£45.18 EX VAT

£54.22 INC VAT

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EMC
ZDPM 16/10 E
16mm bore x 10mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 16/10 E

£41.91 EX VAT

£50.29 INC VAT

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EMC
ZDPM 20/250 E
20mm bore x 250mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 20/250 E

£53.07 EX VAT

£63.68 INC VAT

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EMC
ZDPM 20/80 E
20mm bore x 80mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 20/80 E

£45.92 EX VAT

£55.10 INC VAT

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EMC
ZDPM 20/40 E
20mm bore x 40mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 20/40 E

£45.35 EX VAT

£54.42 INC VAT

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EMC
ZDPM 20/200 E
20mm bore x 200mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 20/200 E

£49.46 EX VAT

£59.35 INC VAT

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EMC
ZDPM 20/100 E
20mm bore x 100mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 20/100 E

£46.44 EX VAT

£55.73 INC VAT

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EMC
ZDPM 20/10 E
20mm bore x 10mm stroke
ISO 6432 | ISO 6432 Pneumatic Cylinder
Manufacturer Part Number ZDPM 20/10 E

£48.03 EX VAT

£57.64 INC VAT

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