Airtac MTF Mini Cylinder MTF40X40SCM
The AirTAC Airtac MTF Mini Cylinder MTF40X40SCM is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 mm
- Port size1/4"
- Acting typeSingle acting, pull (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MTF Mini Cylinder MTF40X40SCM
Delivering 434.8 N of pull force at 0.5 MPa, this AirTAC MTF40X40SCM mini cylinder is engineered for single-acting tension and fail-safe-open tasks. The internal spring holds the piston rod in the extended position, while supplying air to the 1/4 inch port retracts it. Because the spring constantly drives the rod outward, a loss of pneumatic pressure automatically forces the mechanism back to its extended rest state. Built with a SUS304 stainless steel barrel and riveted aluminium covers, the JIS-standard round body resists mild corrosion and washdown environments.
This 40 mm bore, 40 mm stroke configuration yields a safe working load of roughly 261 N, translating to an effective vertical lift capacity of about 22.2 kg when applying a 2:1 safety margin. The riveted construction is noticeably shorter than an equivalent ISO 6432 cylinder, saving valuable mounting length without relying on a tie-rod or extruded profile. It features fixed TPU bumper pads for end-of-stroke deceleration across its 50-800 mm/s speed range, and includes a built-in magnet for position sensing alongside a CM round-end rear cover.
Airtac MTF Mini Cylinder MTF40X40SCM Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF40X40SCM |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MTF40X40SCM
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 MTF40X40SCM Is Used
Heavy-Duty Tensioning
Pulls belts or films tight with 434.8 N of force at 0.5 MPa, safely maintaining roughly 261 N of working tension during operation.
Fail-Safe-Open Valves
Holds a valve open via spring pressure; venting the 1/4 inch port instantly snaps the rod back out to the extended position upon air loss.
Vertical Load Retraction
Lifts and holds loads up to 22.2 kg against gravity using compressed air, relying on the spring to lower the weight safely if pressure drops.
Is the Airtac MTF Mini Cylinder MTF40X40SCM the Right Cylinder?
Choose this 40 mm bore model when your mechanism requires substantial pulling power, as it generates 434.8 N at 0.5 MPa and 645.8 N at 0.7 MPa. If your application demands less force, step down to the MTF32, which provides 266.8 N at 0.5 MPa; the MTF40 represents the largest bore available in this series. Ensure your air supply maintains at least the 0.2 MPa floor required to overcome the internal spring before retraction can begin.
The -S suffix indicates a built-in piston magnet, allowing you to mount CMSG, DMSG, or EMSG electronic or reed switches directly onto the stainless barrel for precise position confirmation. Mounting flexibility is extensive: pair the CM round-end back cover with LB foot brackets, FA flanges, SDB pivot blocks, or TC trunnion joints to fit your specific machine frame.
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 MTF40X40SCM FAQ
This 40 mm bore cylinder generates 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 and initiate the retraction stroke.
The spring constantly extends the rod, meaning any loss of air pressure drives the cylinder to its fully extended position. It cannot hold a load at an arbitrary mid-stroke point; for that, a double-acting MF cylinder with an external rod lock is required. This unit also features a CM back cover and a -S magnet for CMSG/DMSG/EMSG sensors.
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