Airtac MTF Mini Cylinder MTF25X20SCM
The AirTAC Airtac MTF Mini Cylinder MTF25X20SCM is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 20mm 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.
- BoreØ25 mm
- Stroke20 mm
- Port size1/8"
- Acting typeSingle acting, pull (spring return)
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
About the Airtac MTF Mini Cylinder MTF25X20SCM
Generating 153.6 N of pull at 0.5 MPa (236 N at 0.7 MPa), this JIS-standard round-body mini cylinder is built for single-acting tensioning. The internal spring constantly pushes the 10 mm rod out to its extended rest position, while supplying air to the 1/8" port retracts it. Because the quoted forces are already net of the spring, you get reliable closing power, and a minimum of 0.2 MPa is required to overcome the spring tension.
The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments. For the same 25 mm bore and 20 mm stroke, this riveted construction is notably shorter than an ISO 6432 cylinder, saving valuable mounting length. The -S suffix indicates a built-in piston magnet for CMSG, DMSG, or EMSG switches, while the CM round-end back cover completes the assembly. Fixed TPU bumper pads absorb end-of-stroke impacts across the 50-800 mm/s speed range.
Airtac MTF Mini Cylinder MTF25X20SCM Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF25X20SCM |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 150 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 (Ø25mm)
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 153.6 N |
| 0.7 MPa | 236.0 N |
Single-acting pull: the spring extends the rod; air retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
Model Code: Airtac MTF Mini Cylinder MTF25X20SCM
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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 MTF Mini Cylinder MTF25X20SCM Is Used
Tension Control
Pulls web materials or cables with a safe working load near 92 N, releasing tension instantly when air is removed.
Fail-Safe Gate Valve
Holds a diverter gate open via spring force and uses the 153.6 N air pull to close it securely during processing.
Vertical Retraction
Lifts and holds light fixtures weighing up to 7.8 kg against gravity, dropping them safely to the extended rest pose on air loss.
Is the Airtac MTF Mini Cylinder MTF25X20SCM the Right Cylinder?
When sizing this 25 mm bore, compare its 153.6 N @0.5 MPa pull against the smaller MTF20 (93.4 N) or the larger MTF32 (266.8 N). This model fits spring-open, air-close applications requiring a fail-safe extended position upon air loss. With a safe working load around 92 N (roughly 60% of the 0.5 MPa figure) and a vertical lift capacity of about 7.8 kg at a 2:1 margin, it handles moderate tensioning. Mounting options include LB foot, FA flange, SDB pivot, or TC trunnion, and the -S magnet enables position sensing.
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 0.2 – 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 MTF Mini Cylinder MTF25X20SCM FAQ
It delivers a net pull force of 153.6 N at 0.5 MPa and 236 N at 0.7 MPa. A minimum operating pressure of 0.2 MPa is required to overcome the internal return spring and retract the rod.
The spring constantly extends the rod, so on air loss it drives the cylinder to the fully extended position. It will not hold a mid-stroke load; the -S magnet allows CMSG or DMSG sensors to confirm this extended state.
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