Airtac MARF Stainless Steel Mini Air Cylinder MARF20X75S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF20X75S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø20mm bore and 75mm 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.
- BoreØ20 mm
- Stroke75 mm
- Port size1/8"
- Acting typeDouble acting + cushion (front mount)
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X75S
With 75 mm of throw and a flange rolled into its own front cover, the MARF20X75S slots straight into light clamping and eject stations. The 20 mm bore works double acting - 157 N out and 132 N back at 0.5 MPa (73 psi) - and each head carries a variable air cushion you can tune as the load changes.
Construction follows the MA recipe: a stainless round barrel with covers riveted on, a two-way piston seal that stores its own grease, and a hard-chrome plated 8 mm rod with M8x1.25 male thread. The standard-built magnet takes CMSG, DMSG or EMSG switches right off the shelf. For sizing, the 16 kgf theoretical push at 0.5 MPa translates to roughly 8 kg of vertical lifting once a 2:1 margin is applied.
Airtac MARF Stainless Steel Mini Air Cylinder MARF20X75S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF20X75S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 75 mm |
| Acting type | Double acting + cushion (front mount) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MARF20X75S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| F | Front-cover mount: F = front-flange mounting. |
| 20 | Bore size in mm. |
| ×75 | 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 MARF20X75S Is Used
Welding fixture clamp
Clamps sheet-metal brackets ahead of spot welding; the stainless barrel shrugs off the grinding dust that clogs painted bodies.
PPE dispenser drawer latch
Locks and releases a supply drawer in a hospital logistics room, running quietly thanks to the cushioned 75 mm stops.
Sauce jar reject gate
Swings a compact gate to divert underfilled jars on a food line, with 157 N push easily moving glass at line speed.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X75S the Right Cylinder?
Between the short 60 mm version and the long-stroke builds in this series, 75 mm suits compact transfers where 157 N at 0.5 MPa is enough force; heavier parts call for the 25 mm bore at 245 N push. Remember this cylinder cannot hold a position against air loss - the piston drifts - so specify a rod lock for clamps that must stay closed under gravity. No loose foot bracket is required since the flange is integral, and the 1/8" ports keep plumbing compact.
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 MARF20X75S FAQ
Yes: 157 N push and 132 N pull at 0.5 MPa (73 psi); 220 N push and 185 N pull at 0.7 MPa (102 psi); 32 kgf theoretical maximum at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) and proof pressure 1.5 MPa (215 psi).
Neither. The front flange is rolled into the cylinder body as part of the MA construction, and the piston magnet comes fitted as standard, so CMSG, DMSG or EMSG switches clamp on whenever end-of-stroke signals are required.
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