Airtac MTF Mini Cylinder MTF40X80SCM
The AirTAC Airtac MTF Mini Cylinder MTF40X80SCM 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 MTF40X80SCM
Delivering a robust 434.8 N pull force at 0.5 MPa (645.8 N at 0.7 MPa), this 40 mm bore mini cylinder is engineered for heavy-duty tensioning and air-close tasks. The MTF40X80SCM is a JIS-standard round-body unit featuring a SUS304 stainless barrel and riveted aluminium covers. Because it is a single-acting pull type, an internal spring holds the rod extended at rest, and supplying air to the 1/4 inch port retracts it. This fail-safe-to-extended behaviour is ideal for doors or guards that must open automatically on air loss.
The riveted stainless construction resists mild corrosion and washdown environments while maintaining a shorter overall body than an ISO 6432 cylinder of the same bore and stroke. It uses fixed TPU bumper pads for end-of-stroke deceleration rather than an adjustable air cushion. For position feedback, the -S suffix denotes a built-in piston magnet ready for CMSG, DMSG, or EMSG switches, and the CM suffix specifies a round-end rear cover. Based on the 0.5 MPa rating, the computed safe working load is approximately 261 N, which translates to lifting or holding about 22.2 kg vertically with a 2:1 safety margin.
Airtac MTF Mini Cylinder MTF40X80SCM Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF40X80SCM |
|---|---|
| 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 MTF40X80SCM
| 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 MTF40X80SCM Is Used
Fail-Safe Safety Guard
Uses the spring to hold a heavy machine guard fully open; air pulls the 16 mm rod in to close it, ensuring personnel are protected if air pressure drops.
Heavy Tensioning Station
Maintains constant belt or web tension in a packaging line, leveraging the 434.8 N pull force to retract material securely during operation.
Normally Open Process Valve
Keeps a fluid valve unseated by spring pressure so flow continues during outages, with air retracting the rod to close the valve when the system cycles.
Is the Airtac MTF Mini Cylinder MTF40X80SCM the Right Cylinder?
Choose this 40 mm bore if you need maximum pull capacity within the MTF range, providing 434.8 N at 0.5 MPa. If your application requires less force, the next size down is the MTF32, which yields 266.8 N at 0.5 MPa; there is no larger bore available in this series. Single-acting pull cylinders are optimal for spring-open/air-close mechanisms, constant tensioning, and fail-safe-to-extended designs where the load must drive outward upon air loss. Ensure your air supply meets the 0.2 MPa minimum floor required to overcome the internal spring. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets to suit your 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 MTF40X80SCM FAQ
The single-acting pull force is 434.8 N at 0.5 MPa and 645.8 N at 0.7 MPa, measured net of the spring. It requires a minimum operating pressure of 0.2 MPa to overcome the spring and retract the rod.
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. The -S suffix indicates a built-in magnet for CMSG, DMSG, or EMSG sensors; without it, the cylinder cannot accept switches.
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