Airtac MARF Stainless Steel Mini Air Cylinder MARF20X220S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF20X220S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø20mm bore and 220mm 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
- Stroke220 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 MARF20X220S
MARF20X220S stretches the 20 mm bore to 220 mm of travel, 10 mm beyond the 210 version, yet stays inside the 500 mm standard window so no made-to-order build is needed. It is double acting with variable cushions at both ends and produces 157.0 N of push and 131.9 N of pull at 0.5 MPa (22-145 psi working range).
The front flange is part of the riveted cover itself, so the body bolts flat to a plate with no extra mounting hardware to order. Real output for sizing sits near 94 N at 0.5 MPa once you allow headroom, and the theoretical ceiling of this bore is 32 kgf. A standard piston magnet accepts CMSG, DMSG or EMSG switches for end-of-stroke sensing.
Airtac MARF Stainless Steel Mini Air Cylinder MARF20X220S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF20X220S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 220 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 MARF20X220S
| 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. |
| ×220 | 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 MARF20X220S Is Used
Tray ejector in a storage lift
Pushes a tote off a shelf in a small AS/RS; the extra 10 mm over a 210 stroke clears thick tray lips.
Battery-door actuator on AGVs
Slides an access door on automated tuggers; the front flange bolts straight onto the chassis plate with no bracket.
Slide-gate opening on a hopper
Opens a slide gate on a powder mini-hopper; adjust the cushions so the gate stops without banging the frame.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X220S the Right Cylinder?
Compared with the 210 mm sibling this adds 10 mm of travel on identical force figures (157.0 N push at 0.5 MPa). Need more muscle? The 25 mm bore MAR delivers 245.3 N at the same pressure. Remember the piston is free to move if air pressure disappears, so it is not a brake; plan a rod lock for clamps that must stay closed.
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 MARF20X220S FAQ
Cite 157.0 N push and 131.9 N pull at 0.5 MPa, or 219.8 N and 184.7 N at 0.7 MPa; the bore tops out at a theoretical 32 kgf at 1.0 MPa. Pressure range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi).
The riveted stainless barrel and 20 um hard-chrome rod resist the condensation and washdown that rust painted mini bodies, and the two-way piston seal stores grease for longer service between relubes. The magnet is standard, so position sensing with CMSG or EMSG switches needs no special piston.
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