Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125SCM
The AirTAC Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125SCM 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 MF20X125SCM
Delivering 157 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder saves valuable mounting length because its overall body is physically shorter than a comparable ISO 6432 unit. The SUS304 stainless-steel barrel and riveted aluminium covers resist mild corrosion, while the piston's two-way seal retains an oil film for long service life. Because this SKU includes the -S magnet, it is fully ready for CMSG, DMSG, or EMSG position switches.
At 0.5 MPa you can plan for roughly 94 N of actual work output, which translates to lifting an 8 kg vertical load with a 2:1 safety margin. The 1/8" port drives the 30-800 mm/s speed range, and the fixed TPU bumper pads soften the impact at stroke ends without acting as an adjustable cushion. The round CM back cover completes the assembly for straightforward rear mounting.
Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125SCM Technical Specifications
| Model | Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125SCM |
|---|---|
| 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 MF20X125SCM
| 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 MF20X125SCM Is Used
PCB Depaneling Gate
Cycles a lightweight routing gate for circuit board separation, using the 8 kg vertical lift capacity to move fixture plates without overshooting.
Carton Flap Tucking
Pushes small cardboard flaps on a packaging line where the shorter JIS body prevents collision with adjacent folding mechanisms.
Lab Sample Diverting
Actuates a pivot arm to sort vials on a diagnostic carousel, relying on the SUS304 barrel to withstand daily chemical washdowns.
Is the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X125SCM the Right Cylinder?
If your fixture needs less push force, you lack a smaller MF option, but stepping up to the MF25 increases the output to 245.3 N at 0.5 MPa. This 125 mm stroke is well within the 500 mm standard limit, though at extended lengths you should verify side loading to prevent rod bending. Remember that a plain cylinder drifts when air is lost or the valve is centred; the bumper pads only decelerate the stroke end and will not hold the load. For vertical or suspended loads, install an external rod lock or a pilot-operated check valve.
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 MF20X125SCM FAQ
This 20 mm bore cylinder features a 1/8" port and an M8x1.25 male rod thread. 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.
Yes, the built-in -S magnet allows direct mounting of CMSG, DMSG, or EMSG switches. The CM back cover provides a rounded rear surface for pivot or clevis mounting, and the fixed TPU bumpers simply decelerate the piston at stroke end without acting as a lock.
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