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MD Series Single Acting Round Pneumatic Air Cylinder – Spring Thrust ISO 6432

Name: MD Series Single Acting Round Pneumatic Air Cylinder - Spring Thrust ISO 6432
SKU: MD-XXX-XXXX-ASSY
Availability: InStock

Price range: $224.94 through $263.68 +gst

Bore Size

Stroke Length

Clear

Exact Stroke Length (mm) * Enter the exact finished stroke required. The correct price and product code will be selected automatically.

Made to order

This cylinder is manufactured in-house at ATS Pneumatics. Standard production time is usually 3–5 working days.

Urgent / same-day request (+$50.00 +gst) Urgent production is subject to workshop capacity. ATS Pneumatics will confirm availability after the order is received.

Mounting Options

Select any compatible mountings required. You can choose more than one option in each section.

Front Mounting

Select bore first.

Rear Mounting

Select bore first.

Centre Mounting

Select bore first.

Actuator sizing & replacement finder

Find the right size for your application or a suitable replacement for your existing cylinder.

What would you like to do?

Enter the force or vertical lifting weight, air pressure and travel required. Compare ATS roundline, compact, profile and large-bore tie-rod cylinders.

Load or required force What does this value represent?For horizontal motion, use the force needed to move the load—not its weight. Working pressure at the cylinder (bar)Use the lowest pressure available while operating, rather than the compressor rating. Exact stroke / travel (mm) Which movement does the work? Cylinder style Action required Side load or twisting on the rod?

Force allowances and application details

Additional resistance / acceleration force (N)Add friction, process resistance and acceleration force if known. Exhaust backpressure (bar)Zero assumes free exhaust; flow controls can increase this pressure. Use this percentage of calculated force70% is an adjustable initial sizing allowance, not a measured efficiency or verified safety factor. Travel speed or time Cycles per minute Mounting arrangement

Describe the application

This is a preliminary static-force estimate. Actual performance also depends on friction, air flow, acceleration, cushioning, mounting and rod buckling. A listed stroke band is a pricing range, not approval of that stroke under load. Ask ATS to confirm the application before ordering.

Find a replacement cylinder

Use the model on your cylinder label, or measure it to narrow down possible ATS alternatives.

Read the cylinder label

Brand Complete cylinder model codeUse the model/type code, not a serial number or a short numeric stock number.

Measure your cylinder

Isolate and depressurise the machine before measuring. Do not move an attached load to measure travel.

Cylinder shape ISO standard on the label or documentation?Profile/tie rod: ISO 15552 or ISO 6431. Roundline: ISO 6432. Compact 32 mm and larger: ISO 21287; ATS 25 mm: UNITOP-style geometry.

Measure A between the flat outer end-cap faces, excluding both projecting centring bosses. Measure B across the end cap, not across fittings or sensor brackets.

Bore shown on label (if readable)Bore is the internal piston diameter, not the outside width. B — end-cap width / height (mm)Measure across the end cap, excluding fittings and brackets. Outside size is not bore. A — flat end-face body length (mm)Use the endpoints in the diagram. Length formulas below are Aignep references, not universal across brands. C — smooth rod diameter (mm)Measure the smooth rod, not its thread. Helps separate similar bore sizes. D — mounting-hole centre spacing (mm)Measure horizontally or vertically between adjacent hole centres, not diagonally. Confirmed stroke / rod travel (mm)Enter travel from the label, drawing or a safe measurement. Leave blank to see estimates. Manufacturer of measured cylinderOther ISO cylinders may have different body lengths; an Aignep length estimate needs confirmation. Rod-end thread (if known)Include pitch. Male/female compact threads differ. Air-port thread (if known) Original cylinder features

Matching bore, stroke and an ISO family narrows the options. Confirm mountings, rod and port threads, sensors, cushioning, materials and working conditions before replacing a cylinder.

SKU: MD-XXX-XXXX-ASSY Category: Round Pneumatic Air Cylinder ISO 6432 Tags: Custom Cylinder, MD Compatible

MD Series ISO 6432 Single-Acting Round Pneumatic Cylinder

The MD series is a slim roundline cylinder for applications that need spring-powered extension and air-powered retraction. When the powered chamber is exhausted, the internal spring extends the rod.

Every MD cylinder is built in-house at ATS Pneumatics in Christchurch, whether you choose a common stroke length or enter a custom measurement. Configure your cylinder online, view the price and select compatible mountings before ordering.

Choose your exact cylinder size

Select the bore to suit your required force.
Choose a common stroke length or enter your exact stroke in whole millimetres within the online range.
Select any compatible mountings required.

Review your selection and add the cylinder to your cart.

Common Aignep MD strokes are 10, 25, 40 and 50 mm. ATS also builds custom lengths up to 100 mm; the selected spring must suit your application.

Features and specifications

Standard: ISO 6432.
Made-to-order bore sizes: 16, 20 and 25 mm.
Online stroke range: 10–100 mm, entered in whole millimetres.
Operation: single acting, with spring-powered extension and air-powered retraction.
Working pressure: 1–10 bar.
Temperature range: 0 to +80°C; down to −20°C with dry air.
Air supply: filtered compressed air, lubricated or non-lubricated.
Cushioning: elastic end bumpers.
Position sensing: magnetic piston for compatible sensors fitted with a roundline mounting adapter.
Construction: AISI 304 stainless-steel barrel, AISI 303 stainless-steel rod and anodised aluminium end caps.
Seal materials: polyurethane rod and piston seals, with NBR O-rings.

Rod diameter, rod thread, air-port size and mounting dimensions vary by bore. The overview displays the key specifications for your selected size; the technical catalogue includes the full dimensional drawing and tables.

The extending spring opposes air-powered retraction. Its force varies with stroke and rod position, so both the required retraction force and the spring-driven extension must suit your application. Contact ATS if you need help confirming the spring and load.

Mountings and accessories

Compatible mounting options appear after selecting your bore. Mountings are priced separately, and more than one can be selected where required. Position sensors and their mounting adapters are additional items. Contact ATS for help selecting sensors or mounting arrangements for your application.

In-house manufacture and delivery

Standard production is usually 3–5 working days, with delivery time additional. An urgent or same-day production request is available through the configurator, subject to workshop capacity and ATS confirmation. We supply customers throughout New Zealand and can assist with replacement cylinders, custom strokes and application requirements.

Technical downloads

Download the ATS MD Series Technical Catalogue and the ATS Aignep Cylinder Mounts Catalogue for dimensional drawings, bore-specific measurements, operating specifications, spring-load references, force references and air-consumption information.

Select your bore and exact stroke to download a dimension sheet for your finished size. The MD sheet shows the cylinder in its spring-extended position.

Need help choosing a cylinder?

Use our actuator sizing calculator or contact ATS to discuss your load, air pressure, required travel, operating speed, spring action and mounting arrangement. Our team can help confirm the cylinder and accessories suited to your application.

Bore Size	16mm, 20mm, 25mm
Stroke Length	up to 100mm

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