Airtac MF20-25 Stainless Steel Mini Cylinder MF20X12SCM
The AirTAC Airtac MF20-25 Stainless Steel Mini Cylinder MF20X12SCM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 12mm 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
- Stroke12 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X12SCM
Generating 157 N of push force at 0.5 MPa, this double-acting 20 mm bore mini cylinder features a 12 mm stroke and a built-in magnet for position sensing. The JIS-standard round body is purposefully shorter than an ISO 6432 cylinder of the same footprint, delivering a tangible packaging advantage in tight machinery. Its SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments.
Equipped with a CM round-end rear cover, the unit uses fixed TPU bumper pads to soften stroke-end impacts rather than providing adjustable cushioning. The piston relies on a two-way oil-retaining seal for long service life. For practical sizing, plan for a real work load of about 94 N, which equates to lifting roughly 8 kg vertically with a 2:1 safety margin.
Airtac MF20-25 Stainless Steel Mini Cylinder MF20X12SCM Technical Specifications
| Model | Airtac MF20-25 Stainless Steel Mini Cylinder MF20X12SCM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 12 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 MF20X12SCM
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×12 | 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 MF20X12SCM Is Used
Ejector Pins
Cycles short 12 mm ejector pins in compact assembly tooling, using the 157 N thrust to push finished parts clear of the fixture.
Clamp Actuators
Secures small electronic housings during ultrasonic welding, relying on the 8 mm rod and M8x1.25 thread for precise tool mounting.
Gate Diverters
Pivots lightweight sorting gates in packaging conveyors, where the CM round-end cover provides smooth rear articulation.
Is the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X12SCM the Right Cylinder?
When sizing this actuator, stepping up to the MF25 bore increases the 0.5 MPa push force to 245.3 N, while the 20 mm bore shown here is the smallest available in the MF family. Because this specific SKU includes the -S magnet, it is fully compatible with CMSG, DMSG, and EMSG reed or electronic switches.
If your process requires the load to remain stationary upon air loss or valve centering, be aware that a standard cylinder will drift; the internal bumpers only decelerate the stroke end and act as neither a lock nor a brake. For secure load holding, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 MF20X12SCM FAQ
This 20 mm bore cylinder features a 1/8 inch air 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 force of 32 kgf at 1.0 MPa.
No, the base MF uses fixed TPU bumper pads to decelerate the stroke end and lacks adjustable air cushioning, which is found on the MFC variant. Furthermore, while its JIS-standard round body is physically shorter than an ISO 6432 cylinder to save mounting length, it does not conform to the ISO 6432 standard.
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