Airtac MF20-25 Stainless Steel Mini Cylinder MF20X135SCA
The AirTAC Airtac MF20-25 Stainless Steel Mini Cylinder MF20X135SCA is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 135mm 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
- Stroke135 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X135SCA
Generating 157 N of push force at 0.5 MPa, this double-acting AirTAC MF20X135SCA mini cylinder features a 20 mm bore and a 135 mm stroke. The JIS-standard round-body design is physically shorter than a comparable ISO 6432 cylinder, saving valuable mounting length in tight fixtures. Its SUS304 stainless-steel barrel and riveted aluminium covers resist mild corrosion and washdown environments.
Equipped with a built-in piston magnet (-S), it supports CMSG, DMSG, and EMSG position switches. The rear CA pivot cover allows direct articulated mounting. Fixed TPU bumper pads and a front-cover anti-impact pad soften stroke-end impact. Plan for a safe working load of roughly 94 N, which lets you lift about 8 kg vertically with a 2:1 safety margin.
Airtac MF20-25 Stainless Steel Mini Cylinder MF20X135SCA Technical Specifications
| Model | Airtac MF20-25 Stainless Steel Mini Cylinder MF20X135SCA |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 135 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 MF20X135SCA
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×135 | 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 MF20X135SCA Is Used
Small Parts Ejection
Pushes lightweight plastic or aluminium components out of a machining fixture using 157 N of thrust at 0.5 MPa.
Package Diverting
Articulated via the CA pivot to swing a diverter arm and route small cardboard boxes on a packing line.
Electronic Assembly
Presses thin film membranes or micro-connectors into circuit boards with a controlled 135 mm travel.
Is the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X135SCA the Right Cylinder?
When sizing this 20 mm bore unit, verify your actual load against the 157 N push capacity at 0.5 MPa. If your application requires more force, stepping up to the MF25 bore provides 245.3 N of push at the same pressure. Because 20 mm is the smallest available MF bore, there is no smaller option for lighter duties. The 1/8" port and M8x1.25 male rod thread are fixed for this size.
This SKU includes the -S magnet for sensors and the CA rear pivot for clevis mounting. Remember that a standard cylinder drifts if air pressure is lost or the valve is centred; the bumpers only decelerate the stroke end and do not function as a brake. For suspended loads, install an external rod lock or a pilot-operated check valve. With a 135 mm stroke, ensure your mounting arrangement minimizes side-load to prevent rod bending.
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 MF20X135SCA FAQ
This 20 mm bore double-acting cylinder uses a 1/8" port. At 0.5 MPa it pushes with 157 N and pulls with 131.9 N. At 0.7 MPa the push is 219.8 N and the pull is 184.7 N. The theoretical maximum force is 32 kgf at 1.0 MPa.
It does not conform to ISO 6432, though its JIS-standard body is intentionally shorter than an ISO 6432 cylinder to save space. The cylinder will drift if air is lost; the fixed TPU bumpers only soften the stroke end and do not lock the load. For position holding, use an external rod lock or pilot check valve.
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