Airtac MF20-25 Stainless Steel Mini Cylinder MF20X115SCM
The AirTAC Airtac MF20-25 Stainless Steel Mini Cylinder MF20X115SCM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 115mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel for mildly corrosive environments. For the same bore and stroke it is shorter than an ISO 6432 cylinder, saving mounting space.
- BoreØ20 mm
- Stroke115 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X115SCM
Generating 157 N of push force at 0.5 MPa, this double-acting AirTAC MF20X115SCM mini cylinder features a JIS-standard round body that is physically shorter than a comparable ISO 6432 unit, saving valuable mounting length in tight fixtures. The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion, while the internal two-way seal retains an oil film for extended mechanical life.
Equipped with a built-in piston magnet (-S) for CMSG, DMSG or EMSG switches, it also features a CM round-end rear cover. The fixed TPU bumper pads and front-cover anti-impact pad soften stroke-end impacts without acting as an adjustable cushion. Plan for roughly 94 N of actual work at 0.5 MPa, which translates to lifting about 8 kg vertically with a 2:1 safety margin.
Airtac MF20-25 Stainless Steel Mini Cylinder MF20X115SCM Technical Specifications
| Model | Airtac MF20-25 Stainless Steel Mini Cylinder MF20X115SCM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 115 mm |
| Acting type | Double acting |
| 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 | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MF/MFC (JIS-standard) datasheet. Barrel: SUS304 stainless steel; covers: aluminum alloy (round-body, riveted rolling-packed construction). Thread options: PT (blank) / G / NPT.
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 MF20-25 Stainless Steel Mini Cylinder MF20X115SCM
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×115 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MF-family variants: MF / MFC (double acting ±cushion), MSF / MTF (single acting push / pull), MFD / MFCD (double rod ±cushion), MFJ / MFCJ (adjustable stroke ±cushion). Back covers CA / U / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X115SCM Is Used
Small Part Ejection
Pushes lightweight plastic mouldings out of an injection press with 157 N at 0.5 MPa, using the 115 mm stroke to clear the tooling entirely.
Sorter Diverter
Actuates a diverter arm on a packaging line; the compact JIS body fits between conveyor rollers where longer ISO cylinders cannot.
Probe Positioning
Moves an electronic test probe into contact with a PCB, relying on the -S magnet and DMSG switch to confirm the 115 mm extension.
Is the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X115SCM the Right Cylinder?
When sizing this 20 mm bore, step down if loads are light or up to the MF25 (245.3 N at 0.5 MPa) if you need more thrust. This SKU includes the -S magnet for position sensing and the CM round-end back cover for pivot mounting. Remember that a standard cylinder drifts if air pressure drops; use an external pilot check valve or rod lock to hold a vertical load securely. At a 115 mm stroke, keep the load guided to prevent rod bending and premature seal wear.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/CM) & mount (LB/FA/SDB/TC)
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 Use correct back cover (CA/U/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MF20-25 Stainless Steel Mini Cylinder MF20X115SCM FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N. At 0.7 MPa it pushes 219.8 N and pulls 184.7 N. The theoretical maximum is 32 kgf at 1.0 MPa. The air port is 1/8" and the male rod thread is M8x1.25.
No, the piston will drift. The fixed TPU bumper pads only decelerate the stroke end and do not act as a brake. For vertical loads, install an external rod lock or pilot check valve. The CM round-end cover and SUS304 barrel suit washdown-adjacent environments.
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Covers non-human-caused product damage.
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