Airtac MTF Mini Cylinder MTF40X150U
The AirTAC Airtac MTF Mini Cylinder MTF40X150U is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 mm
- Port size1/4"
- Acting typeSingle acting, pull (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MTF Mini Cylinder MTF40X150U
Delivering a robust 434.8 N of pull force at 0.5 MPa, this AirTAC MTF40X150U mini cylinder is engineered for heavy-duty tensioning and air-close operations. As a single-acting pull unit, an internal spring holds the piston rod normally extended, while supplying air to the 1/4 inch port retracts it. If air pressure drops, the mechanism safely fails to the extended position. The quoted pull figures are already net of the spring resistance.
Built with a JIS-standard round body, the SUS304 stainless steel barrel and riveted aluminium covers offer excellent mild corrosion and washdown resistance. For the same 40 mm bore and 150 mm stroke, this compact frame is notably shorter than an ISO 6432 cylinder, 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. End-of-stroke deceleration is handled by fixed TPU bumper pads. With a 434.8 N pull at 0.5 MPa, the safe working load is roughly 261 N, capable of vertically lifting about 22.2 kg with a 2:1 safety margin.
Airtac MTF Mini Cylinder MTF40X150U Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF40X150U |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 MTF40X150U
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 MTF40X150U Is Used
Heavy-Duty Tensioning
Utilize the 434.8 N net pull force at 0.5 MPa to maintain constant tension on heavy cables or web materials during processing.
Fail-Safe Open Valves
The spring-return design keeps the rod extended by default, ensuring critical flow valves automatically snap open if the air supply is lost.
Pallet Gate Retraction
Deploy the full 150 mm stroke to pull safety gates or pallet stops out of the way, relying on the spring to re-extend them securely.
Is the Airtac MTF Mini Cylinder MTF40X150U the Right Cylinder?
When sizing this 40 mm bore model, compare its 434.8 N pull force at 0.5 MPa against the next size down: the MTF32 provides 266.8 N, which may be insufficient for high-tension closing tasks. As 40 mm is the largest available MTF bore, you cannot step up further within this series. A minimum operating pressure of 0.2 MPa is required to overcome the internal spring before the air can retract the rod. This cylinder features a U flat-end rear cover and supports LB foot, FA flange, SDB pivot, and TC trunnion mounts. Because this configuration lacks the -S magnet, it cannot support magnetic sensing; choose the -S variant if CMSG, DMSG, or EMSG switches are 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 MTF40X150U 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 spring, with a maximum pressure of 1.0 MPa and a proof pressure of 1.5 MPa.
The internal spring constantly extends the rod, meaning the cylinder fails to the extended position on air loss and cannot hold a mid-stroke load. This specific unit features a U flat-end rear cover and lacks a magnet, so it cannot accept CMSG or DMSG sensors without upgrading to the -S variant.
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