Airtac MTF Mini Cylinder MTF20X15U
The AirTAC Airtac MTF Mini Cylinder MTF20X15U is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 15mm 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
- Stroke15 mm
- Port size1/8"
- Acting typeSingle acting, pull (spring return)
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MTF Mini Cylinder MTF20X15U
Generating 93.4 N of pull force at 0.5 MPa, this compact 20 mm bore cylinder uses internal spring pressure to keep the rod extended, while compressed air retracts it. Because the quoted force is already net of the spring, you can confidently apply it to tensioning tasks. The JIS-standard riveted round-body construction, featuring a SUS304 stainless barrel, is purposefully shorter than an ISO 6432 cylinder of the same size, saving valuable mounting length while resisting mild washdown corrosion. The U flat-end rear cover keeps the footprint minimal.
For sizing, this 15 mm stroke variant provides a safe working load of roughly 56 N, or an effective vertical lift capacity of about 4.8 kg when applying a 2:1 safety margin. Operating on a 1/8" port with an M8x1.25 male rod thread, it requires a minimum of 0.2 MPa to overcome the spring. Note that this specific SKU lacks the -S magnet option, meaning it cannot accept CMSG, DMSG, or EMSG position sensors.
Airtac MTF Mini Cylinder MTF20X15U Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF20X15U |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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 MTF20X15U
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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 MTF20X15U Is Used
Tensioning Mechanisms
Delivers a steady 93.4 N pull at 0.5 MPa to maintain tension on belts or wires, automatically snapping back to the extended position if air pressure drops.
Fail-Safe Open Gates
Holds a lightweight 15 mm stroke gate closed via air retraction, using the internal spring to force the gate open during an air loss emergency.
Compact Clamping
Fits into tight machinery footprints using its short JIS-standard body and U flat-end cover, pulling a 20 mm clamp back against a workpiece.
Is the Airtac MTF Mini Cylinder MTF20X15U the Right Cylinder?
When sizing this 20 mm bore unit, consider that it delivers 93.4 N of pull at 0.5 MPa and 146.1 N at 0.7 MPa. If your application requires less force, there is no smaller MTF bore available, but if you need significantly more pull, stepping up to the MTF25 provides 153.6 N at 0.5 MPa. This single-acting pull configuration is ideal for spring-open, air-close operations where losing air pressure forces the rod safely back to the extended position.
Keep in mind the 0.2 MPa pressure floor required to retract the rod against the spring. Mounting is versatile with LB foot, FA flange, SDB pivot, or TC trunnion options, though this U flat-end version excels in tight spaces. Since this model lacks the -S magnet, you must choose a different variant if magnetic position sensing is required.
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 MTF20X15U FAQ
This 20 mm bore 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 and a proof pressure of 1.5 MPa.
As a single-acting pull cylinder, the internal spring constantly pushes the rod out to the extended position. If air pressure is lost, the spring drives the rod to this extended fail-safe state. It cannot hold a mid-stroke load, and this non-S SKU cannot accept position sensors.
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