Airtac MTF Mini Cylinder MTF40X15SCM
The AirTAC Airtac MTF Mini Cylinder MTF40X15SCM is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 15mm 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
- Stroke15 mm
- Port size1/4"
- Acting typeSingle acting, pull (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MTF Mini Cylinder MTF40X15SCM
Delivering a robust 434.8 N of pull force at 0.5 MPa, this 40 mm bore JIS-standard round-body mini cylinder is engineered for heavy-duty tensioning and fail-safe-open automation. The MTF40X15SCM utilizes a single-acting pull mechanism where an internal spring holds the piston rod extended at rest, while supplying air to the 1/4 inch port retracts it. Because the spring constantly drives the rod outward, any loss of air pressure forces the cylinder to its extended position, making it inherently safe for applications that must return to an open state during an outage.
Built with a SUS304 stainless steel barrel and riveted aluminium covers, the compact riveted construction is shorter than a comparable ISO 6432 cylinder for the same 40 mm bore and 15 mm stroke, saving valuable machine space while resisting mild corrosion and washdown environments. The unit includes the -S magnet option for position sensing and features a CM round-end rear cover. For sizing purposes, its effective vertical lift capacity is approximately 22.2 kg using a 2:1 safety margin, yielding a safe working load of about 261 N. End-of-stroke deceleration is handled by fixed TPU bumper pads rather than an adjustable cushion.
Airtac MTF Mini Cylinder MTF40X15SCM Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF40X15SCM |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 MTF40X15SCM
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 MTF40X15SCM Is Used
High-Force Tensioning
Provides 434.8 N of net pull at 0.5 MPa to maintain strict tension on heavy belts, cables, or web materials, automatically snapping back to the extended position if air pressure drops.
Fail-Safe Valve Actuation
Holds a large process valve open via its internal spring and uses the 1/4 inch air port to pull it closed, ensuring the valve defaults to a safe open state during a pneumatic power loss.
Vertical Load Retraction
Lifts and holds loads up to roughly 22.2 kg against gravity during the air-retract stroke, relying on the spring to push the 16 mm rod back out when the 0.2 MPa pressure floor is not met.
Is the Airtac MTF Mini Cylinder MTF40X15SCM the Right Cylinder?
When selecting this model, compare its 434.8 N pull force at 0.5 MPa against the next size down, the MTF32, which provides 266.8 N at the same pressure; since 40 mm is the largest available bore in this series, there is no larger MTF option for higher load requirements. This single-acting pull configuration is optimal for spring-open/air-close mechanisms, constant tensioning, or operations requiring a fail-safe extended position upon air loss. Ensure your system maintains at least the 0.2 MPa pressure floor required to overcome the internal spring. Mounting flexibility is provided through LB foot, FA flange, SDB pivot, and TC trunnion options, and the integrated -S magnet enables direct fitting of CMSG, DMSG, or EMSG sensors.
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 MTF40X15SCM FAQ
This 40 mm bore cylinder delivers a net pull force of 434.8 N at 0.5 MPa and 645.8 N at 0.7 MPa. It requires an operating pressure between 0.2 MPa and 1.0 MPa, with a minimum of 0.2 MPa needed to overcome the internal return spring and retract the 16 mm rod.
The internal spring constantly extends the rod, so upon air loss the cylinder fails directly to the extended position rather than holding a mid-stroke load. The included -S magnet allows for position tracking using CMSG, DMSG, or EMSG switches, and the rear features a CM round-end cover.
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