Airtac MTF Mini Cylinder MTF20X50U
The AirTAC Airtac MTF Mini Cylinder MTF20X50U is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 50mm 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
- Stroke50 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 MTF20X50U
Generating 146.1 N of pull at 0.7 MPa, this AirTAC MTF20X50U is a single-acting, spring-return mini cylinder built to JIS standards. A SUS304 stainless round barrel and riveted aluminium covers keep the body shorter than an ISO 6432 unit of the same bore and stroke. The internal spring constantly pushes the 8 mm rod out, meaning compressed air through the 1/8" port is only needed to retract it. If air pressure drops, the rod fails safely to the extended position.
Because the quoted force is net of the spring, you get a true 93.4 N pull at 0.5 MPa. That translates to a safe working load of roughly 56 N, or lifting about 4.8 kg vertically with a 2:1 margin. This specific SKU lacks the -S magnet, so it cannot host CMSG, DMSG, or EMSG sensors. It uses fixed TPU bumper pads for end-of-stroke deceleration and features a U flat-end rear cover for direct mounting.
Airtac MTF Mini Cylinder MTF20X50U Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF20X50U |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 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 MTF20X50U
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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 MTF20X50U Is Used
Tension Control
Uses its 93.4 N pull at 0.5 MPa to maintain steady tension on light filaments or webs, releasing the load when air is removed.
Fail-Safe Gate Opening
Holds an access door open via spring force; applying air to the 1/8" port retracts the rod to let the gate close securely.
Light Part Retraction
Pulls small machined components out of a workstation safely, leveraging a safe working load of about 56 N.
Is the Airtac MTF Mini Cylinder MTF20X50U the Right Cylinder?
Choose this 20 mm bore when you need a compact spring-extend, air-retract actuator. It delivers 93.4 N of pull at 0.5 MPa. If your load requires less force, note that 20 mm is the smallest MTF bore available. If you need more power, step up to the MTF25, which provides 153.6 N at 0.5 MPa. Always ensure your air supply provides at least 0.2 MPa to overcome the internal spring.
The U flat-end back cover suits direct rear mounting, while LB foot, FA flange, SDB pivot, and TC trunnion brackets are available for broader setups. Since this base model has no -S magnet, position sensing is not possible; choose an MTF20X50U-S variant if you require CMSG, DMSG, or EMSG switches.
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 MTF20X50U FAQ
It generates a net pull of 93.4 N at 0.5 MPa and 146.1 N at 0.7 MPa. The operating pressure ranges from 0.2 MPa to 1.0 MPa. A minimum of 0.2 MPa is required to overcome the return spring and retract the rod.
The spring constantly extends the rod; air pressure only pulls it back in. On air loss, it fails to the extended position and cannot hold a mid-stroke load. Also, this specific SKU lacks a magnet, so it cannot support CMSG, DMSG, or EMSG sensors.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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