Airtac MTF Mini Cylinder MTF20X25SUTC
The AirTAC Airtac MTF Mini Cylinder MTF20X25SUTC is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 mm
- Port size1/8"
- Acting typeSingle acting, pull (spring return)
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MTF Mini Cylinder MTF20X25SUTC
Generating 93.4 N of net pull at 0.5 MPa, this 20 mm bore single-acting cylinder uses air to retract the rod and an internal spring to push it back out. The MTF20X25SUTC features a JIS-standard round body with a SUS304 stainless barrel and riveted aluminium covers, offering a shorter overall envelope than an ISO 6432 unit of the same bore and stroke. Because the spring holds the rod out at rest, the cylinder fails safely to the extended position if air pressure drops below the 0.2 MPa floor.
This specific configuration includes a built-in piston magnet for position sensing with CMSG, DMSG or EMSG switches, and a U flat-end back cover. It uses a 1/8" port and fixed TPU bumper pads for end-of-stroke deceleration. For sizing, the 93.4 N pull at 0.5 MPa yields a safe working load of about 56 N, which means it can vertically lift or hold roughly 4.8 kg with a 2:1 safety margin.
Airtac MTF Mini Cylinder MTF20X25SUTC Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF20X25SUTC |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 93.4 N |
| 0.7 MPa | 146.1 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 MTF20X25SUTC
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MTF20X25SUTC Is Used
Light Tensioning
Pulls light cables or filaments with a 56 N safe working load, releasing tension automatically when air pressure is removed.
Spring-Open Gate
Holds a small access hatch open by spring force and pulls it closed on demand, ensuring the hatch extends outward if the air supply fails.
Retracting Stopper
Uses its 4.8 kg effective holding force to keep a light product stopper extended, pulling it down to let packages pass when actuated.
Is the Airtac MTF Mini Cylinder MTF20X25SUTC the Right Cylinder?
Choose this 20 mm bore model when a task requires spring-open, air-close action, tensioning, or a fail-safe-to-extended return. If 93.4 N of pull at 0.5 MPa is insufficient, step up to the MTF25, which provides 153.6 N at the same pressure; there is no smaller MTF bore below 20. Operating pressure must stay between 0.2 and 1.0 MPa to overcome the spring and function correctly.
The included -S magnet enables CMSG, DMSG or EMSG electronic or reed switches. This SKU also comes with a U flat-end back cover and is compatible with TC trunnion mounting, alongside LB foot and FA flange options, to fit various machinery layouts.
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 MTF20X25SUTC FAQ
This 20 mm bore single-acting cylinder provides a net pull force of 93.4 N at 0.5 MPa and 146.1 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the internal return spring, with a maximum pressure of 1.0 MPa.
The spring constantly extends the rod, so on air loss the cylinder fails safely to the fully extended position. It cannot hold an arbitrary mid-stroke load; for that, use a double-acting MF cylinder with an external rod lock. This unit also has a -S magnet for CMSG/DMSG/EMSG sensors.
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