Airtac MTF Mini Cylinder MTF40X50SCA
The AirTAC Airtac MTF Mini Cylinder MTF40X50SCA is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 50mm 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
- Stroke50 mm
- Port size1/4"
- Acting typeSingle acting, pull (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MTF Mini Cylinder MTF40X50SCA
Delivering a robust 434.8 N pull force at 0.5 MPa, this AirTAC MTF40X50SCA mini cylinder is engineered for single-acting pull operations. A built-in spring holds the piston rod normally extended, while supplying air to the 1/4 inch port retracts it. Because the spring actively pushes the rod out, the assembly fails to the extended position upon air loss, making it highly reliable for spring-open and air-close circuits.
Built with a JIS-standard SUS304 stainless round body and riveted aluminium covers, the unit is shorter than a comparable ISO 6432 cylinder, saving valuable mounting length. It features a 16 mm rod, an M14x1.5 male thread, and fixed TPU bumper pads for end-of-stroke deceleration. Factoring a 2:1 safety margin against the 0.5 MPa rating yields a safe working load of roughly 261 N, meaning it can vertically lift or hold about 22.2 kg. The -S suffix denotes an integrated magnet for CMSG, DMSG, or EMSG sensors, and the CA back cover provides a rear pivot mount.
Airtac MTF Mini Cylinder MTF40X50SCA Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF40X50SCA |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 MTF40X50SCA
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | 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 MTF40X50SCA Is Used
Fail-Safe Gate Opening
Utilizes the spring-return extension to push access gates open automatically during a compressed air failure, while the 434.8 N pull force retracts the latch securely under pressure.
Heavy Tensioning Systems
Maintains steady cable or belt tension with the internal spring, using the 645.8 N air retraction force at 0.7 MPa to release or reset the tensioning mechanism on command.
Normally Open Clamping
Holds workpiece clamps in the open position via spring force, applying 261 N of safe working load to pull the clamps closed when 0.5 MPa air is applied.
Is the Airtac MTF Mini Cylinder MTF40X50SCA the Right Cylinder?
When sizing this 40 mm bore unit, evaluate your tension requirements against its 434.8 N pull at 0.5 MPa (645.8 N at 0.7 MPa). If your load is lighter, stepping down to the MTF32 provides 266.8 N at 0.5 MPa; since 40 mm is the largest available MTF bore, exceeding 645.8 N requires a different cylinder family. Ensure your air supply meets the 0.2 MPa minimum floor required to overcome the internal spring before retraction can begin.
This pull-type configuration is optimal for mechanisms requiring a fail-safe extended state, such as tensioning gates or holding clamps open during an outage. The included CA pivot back cover suits angular articulation, and the -S magnet allows direct mounting of CMSG, DMSG, or EMSG electronic switches for position confirmation.
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 MTF40X50SCA FAQ
This 40 mm bore cylinder provides a single-acting 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, has a maximum pressure of 1.0 MPa, and uses a 1/4 inch air port.
The internal spring constantly extends the 16 mm rod, meaning the cylinder fails to the extended position on air loss and cannot hold a mid-stroke load. The CA back cover provides a rear pivot point for angular mounting, and the -S option includes a magnet for CMSG, DMSG, or EMSG sensors.
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