Airtac MTF Mini Cylinder MTF40X80U
The AirTAC Airtac MTF Mini Cylinder MTF40X80U is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 80mm stroke, 1/4" 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.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeSingle acting, pull (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MTF Mini Cylinder MTF40X80U
Delivering a substantial 434.8 N of pull at 0.5 MPa (645.8 N at 0.7 MPa), this 40 mm bore cylinder is built for heavy-duty tensioning. The AirTAC MTF40X80U is a JIS-standard round-body mini cylinder featuring a SUS304 stainless barrel and riveted aluminium covers. A spring constantly pushes the rod out to its extended rest, while supplying air to the 1/4" port retracts it. This single-acting pull configuration fails safe to the extended position on air loss, making it perfect for spring-open or air-close operations.
Because the spring force is already factored into the net ratings, you can directly apply the pull numbers. For sizing, this yields a safe working load of roughly 261 N, or a vertical lift capacity of about 22.2 kg with a 2:1 margin. The riveted construction is notably shorter than an equivalent ISO 6432 unit, saving valuable mounting length. This specific SKU lacks a magnet, so it cannot accept position sensors; adding the -S option enables CMSG, DMSG, or EMSG switches.
Airtac MTF Mini Cylinder MTF40X80U Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF40X80U |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 (Ø40mm)
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 434.8 N |
| 0.7 MPa | 645.8 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 MTF40X80U
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 MTF40X80U Is Used
Heavy-Duty Tensioning
Pulls heavy cables or webs taut with 434.8 N of force, releasing the tension instantly when air is removed and the spring pushes back out.
Fail-Safe Valve Actuation
Holds a valve open via spring pressure; air retracts the 16 mm rod to close it, ensuring the system defaults to an open state during a compressed air failure.
Spring-Loaded Gate Release
Utilizes the U flat-end cover for compact mounting on packaging gates, using the 645.8 N @0.7 MPa pull to unlatch heavy containment doors.
Is the Airtac MTF Mini Cylinder MTF40X80U the Right Cylinder?
When sizing this 40 mm bore, compare its 434.8 N @0.5 MPa pull capacity against the next size down: the MTF32 offers 266.8 N @0.5 MPa. Since 40 mm is the largest available MTF bore, you cannot step up further within this series. Choose this single-acting pull model when a mechanism must fail-safe to the extended position, such as a tensioning jig or a gate that springs open.
Remember that air pressure must remain at or above the 0.2 MPa floor to overcome the internal spring and successfully retract the rod. The included U flat-end back cover suits direct rear mounting. For position feedback, note this non-magnet SKU cannot host a sensor; you would need the -S variant to use 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 MTF40X80U FAQ
This 40 mm bore cylinder provides a net pull force of 434.8 N at 0.5 MPa and 645.8 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 limit of 1.0 MPa.
The internal spring constantly extends the rod, and air pressure via the 1/4" port pulls it back in. On air loss, the spring drives the rod to the fully extended position; it will not hold a mid-stroke load. This specific SKU has no magnet and cannot accept sensors, but the -S variant supports CMSG, DMSG, and EMSG switches.
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