Airtac MARF Stainless Steel Mini Air Cylinder MARF32X20S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF32X20S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø32mm bore and 20mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ32 mm
- Stroke20 mm
- Port size1/8"
- Acting typeDouble acting + cushion (front mount)
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MARF Stainless Steel Mini Air Cylinder MARF32X20S
For tight 20 mm moves, the MARF32X20S packs a 32 mm bore into a short flange-mount package: 402 N push and 346 N pull at 0.5 MPa, reaching 563 N at 0.7 MPa, with the front flange already riveted into the cover so no extra foot or bracket is needed. Round the rating down to about 241 N of working force at 0.5 MPa and you still have enough for clamping, pressing or ejecting small assemblies in one quick hit.
Unlike painted minis, this one wraps a stainless-steel barrel around a hard-chrome 12 mm rod and rolls the aluminium covers onto it, so coolant mist or an occasional hose-down will not chew the body. The magnet ships as standard equipment, meaning CMSG / DMSG / EMSG switches mount without a special-order piston. Double-acting action plus dual variable cushions keep the short stroke quiet and controlled across the full 30-800 mm/s band.
Airtac MARF Stainless Steel Mini Air Cylinder MARF32X20S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF32X20S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 20 mm |
| Acting type | Double acting + cushion (front mount) |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MARF Stainless Steel Mini Air Cylinder MARF32X20S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| F | Front-cover mount: F = front-flange mounting. |
| 32 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MARF Stainless Steel Mini Air Cylinder MARF32X20S Is Used
Mold part ejector
Kicks small molded caps out of a shallow cavity with a 20 mm punch stroke; 402 N at 0.5 MPa is ample for parts weighing only a few grams.
Lab deck sample pusher
Advances sample trays one station on an analytical instrument deck, where the stainless barrel tolerates reagent splash better than coated mini cylinders.
Dosing head lift
Raises a filling nozzle 20 mm between bottles; the built-in magnet feeds a CMSG switch signal to the PLC for fill-position confirmation.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF32X20S the Right Cylinder?
Short-stroke work rarely needs a big bore: a 20 mm MAR gives 157 N at 0.5 MPa and a 40 mm gives 628 N, so 32 mm at 402 N holds the middle ground for small presses and gates. Plan on roughly 241 N of working force rather than the full rating. This F version mounts by its own front flange; if you later need clevis action, I and Y knuckles thread straight onto the M10x1.25 rod.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MARF Stainless Steel Mini Air Cylinder MARF32X20S FAQ
Extension force is 402 N and retraction 346 N at 0.5 MPa; at 0.7 MPa the figures climb to 563 N and 484 N. Theoretical peak output is 82 kgf at 1.0 MPa. Operating range: 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
Yes, at no extra piston cost: the magnet is built in as standard on the MA series, so CMSG, DMSG and EMSG switches mount directly on the barrel to signal extend and retract positions out of the box.
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