Airtac MTF Mini Cylinder MTF40X20SCM
The AirTAC Airtac MTF Mini Cylinder MTF40X20SCM is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 20mm 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
- Stroke20 mm
- Port size1/4"
- Acting typeSingle acting, pull (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MTF Mini Cylinder MTF40X20SCM
Delivering 434.8 N of net pull force at 0.5 MPa, the AirTAC MTF40X20SCM is a JIS-standard round-body mini cylinder built for single-acting tension and fail-safe-open tasks. An internal spring constantly pushes the Ø16 mm rod to its extended state, while a 1/4 inch air port retracts it against the load. The SUS304 stainless barrel shrinks mounting length compared to ISO 6432 units and withstands mild washdowns. This -S configuration includes a piston magnet for position sensing.
Because the spring holds the rod out, dropping air pressure forces the cylinder to its extended position rather than locking mid-stroke. For a 2:1 safety margin, expect an effective vertical lift capacity of about 22.2 kg, or a safe working load near 261 N. End-of-stroke deceleration relies on fixed TPU bumper pads, and the CM round-end rear cover simplifies direct rear pivot mounting.
Airtac MTF Mini Cylinder MTF40X20SCM Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF40X20SCM |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 20 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 MTF40X20SCM
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×20 | 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 MTF40X20SCM Is Used
Heavy-Duty Tensioning
Pulls heavy cables or belts with up to 434.8 N of force at 0.5 MPa, using air to retract and the internal spring to maintain baseline tension.
Fail-Safe Valve Actuation
Holds a valve open via spring force in its default extended state, automatically securing the valve open during a plant air loss.
Carton Lid Retraction
Pulls packaging lids clear of the line using the 1/4 inch air port, relying on the spring to push the arm back out when air is removed.
Is the Airtac MTF Mini Cylinder MTF40X20SCM the Right Cylinder?
When sizing this 40 mm bore unit, compare its 434.8 N @0.5 MPa pull force against the next size down: the MTF32 delivers 266.8 N, which may suit lighter tensioning jobs if you need a smaller footprint. As the largest bore in the MTF family, no larger single-acting pull variant exists. Ensure your air supply meets the 0.2 MPa minimum floor required to overcome the internal spring before retraction begins. The built-in -S magnet pairs directly with CMSG, DMSG, or EMSG switches for precise end-of-stroke detection.
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 MTF40X20SCM 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 return spring and begin retracting the rod.
The internal spring constantly drives the rod to the fully extended position. If air pressure is lost, the cylinder fails to the extended state and cannot hold a load at mid-stroke. The SUS304 stainless build and CM rear cover ensure durable performance in these cycling conditions.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MTF Mini Cylinder MTF40X20SCM
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.