Airtac MTF Mini Cylinder MTF40X40CM
The AirTAC Airtac MTF Mini Cylinder MTF40X40CM 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
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MTF Mini Cylinder MTF40X40CM
Delivering a robust 434.8 N of pull force at 0.5 MPa (645.8 N at 0.7 MPa), this 40 mm bore cylinder is built for demanding tensioning and air-close tasks. The MTF40X40CM is a JIS-standard round-body mini cylinder 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 design ensures machinery stays open if air pressure drops, while the compact riveted body is shorter than a comparable ISO 6432 unit, saving valuable mounting length.
For sizing purposes, the quoted pull force is already net of the spring resistance, requiring a minimum 0.2 MPa operating pressure to overcome it. In practical terms, this translates to a safe working load of roughly 261 N, or the ability to vertically lift and hold about 22.2 kg with a 2:1 safety margin. This specific SKU features a CM round-end rear cover and fixed TPU bumper pads for end-of-stroke deceleration, but it lacks a magnet and cannot support position sensing without switching to an -S variant.
Airtac MTF Mini Cylinder MTF40X40CM Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF40X40CM |
|---|---|
| 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 MTF40X40CM
| 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 MTF40X40CM Is Used
Heavy Drawer Retraction
Uses the 434.8 N pull force to automatically pull heavy industrial drawers or safety gates closed when air is supplied, with the spring pushing them back open on air loss.
Tensioning Systems
Maintains constant tension on belts, cables, or webbing in packaging machinery, using air to release the tension and the internal spring to apply the holding pull.
Fail-Safe Valve Actuation
Keeps a critical fluid valve fully open by spring force during pneumatic power loss, using the 40 mm bore pull action to close the valve only when the control system is actively pressurized.
Is the Airtac MTF Mini Cylinder MTF40X40CM the Right Cylinder?
When sizing this 40 mm bore, evaluate your required tension against the 434.8 N pull available at 0.5 MPa. If your load is lighter, dropping down to the MTF32 provides 266.8 N of pull at the same pressure, saving space; since 40 mm is the largest bore in the MTF family, heavier loads require a different cylinder series. This single-acting pull configuration is optimal for spring-open / air-close applications and return-to-extended fail-safe mechanisms, provided you can maintain the 0.2 MPa pressure floor.
Mounting options include LB foot, FA flange, SDB pivot-block, and TC trunnion brackets to fit your frame. Note that this specific model has no internal magnet, meaning it cannot accept CMSG, DMSG, or EMSG sensors for mid-stroke detection; you must select an -S variant if position feedback is required.
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 MTF40X40CM FAQ
This 40 mm bore, single-acting pull cylinder generates 434.8 N of pull force at 0.5 MPa and 645.8 N at 0.7 MPa. These figures are net of the internal spring. It requires a minimum operating pressure of 0.2 MPa to overcome the spring and retract the rod, with a maximum operating pressure of 1.0 MPa.
The internal spring constantly drives the rod to the fully extended position, so if air pressure is lost, the cylinder fails safely to the extended state. It cannot hold an arbitrary mid-stroke load; for that, a double-acting MF cylinder with an external rod lock is required. Additionally, this SKU lacks a magnet, so position sensing is not possible without upgrading to an -S model.
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