Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125CA
The AirTAC Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125CA is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 125mm 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
- Stroke125 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125CA
Generating 157 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder is built for tight pivot-mount machinery. Its SUS304 stainless barrel and riveted aluminium covers resist mild washdown while the internal two-way seal retains an oil film for long service life. Because the body is physically shorter than an ISO 6432 cylinder of the same bore and stroke, it saves valuable mounting length.
Equipped with a CA pivot back cover, the unit uses fixed TPU bumper pads to soften stroke-end impact rather than providing adjustable cushioning. With a 125 mm stroke and an 8 mm rod, it moves at 30-800 mm/s through a 1/8" port. Plan for roughly 94 N of actual work at 0.5 MPa, which means it can safely lift an 8 kg part vertically against gravity.
Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125CA Technical Specifications
| Model | Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125CA |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 125 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 MF20X125CA
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | 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 MF20X125CA Is Used
Pivot-Arm Tensioning
Uses the CA rear pivot to swing an idler arm, applying 157 N of force to maintain belt tension in a compact packaging conveyor drive.
Small Part Ejection
Pushes lightweight plastic mouldings out of a sub-assembly jig, safely lifting parts under 8 kg using the 125 mm stroke.
Valve Actuation
Cycles a diverter flap in a food-grade sorting line where the SUS304 barrel withstands routine washdown and the short body fits the tight frame.
Is the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125CA the Right Cylinder?
When sizing this 20 mm bore unit, stepping up to the MF25 increases your 0.5 MPa push force to 245.3 N, while no smaller AirTAC MF bore exists below 20 mm. If your application requires the rod to stay put after a power loss, remember this standard cylinder will drift; you must add an external rod lock or pilot check valve, as the fixed bumpers only decelerate the stroke end.
This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG position switches. For sensing duties, select the -S variant. The 125 mm stroke pairs well with FA flange or LB foot mounts, though you should minimize side loading on the extended M8x1.25 rod to prevent 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 MF20X125CA FAQ
This 20 mm bore cylinder features a 1/8" port and an 8 mm rod. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so CMSG, DMSG, or EMSG switches cannot be used. You would need the -S variant for sensing. It uses fixed TPU bumper pads for end-of-stroke deceleration and is shorter than an equivalent ISO 6432 cylinder.
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