Airtac MTF Mini Cylinder MTF40X40U
The AirTAC Airtac MTF Mini Cylinder MTF40X40U 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
About the Airtac MTF Mini Cylinder MTF40X40U
Delivering a substantial 434.8 N of net pull force at 0.5 MPa, this JIS-standard round-body mini cylinder is engineered for heavy-duty tensioning and air-close operations. The MTF40X40U utilizes a SUS304 stainless steel barrel with riveted aluminium covers, offering a shorter overall body than an ISO 6432 unit for the same 40 mm bore and 40 mm stroke, thereby saving valuable mounting length while resisting mild washdown corrosion.
As a single-acting pull type, an internal spring normally holds the 16 mm rod extended, and supplying air to the 1/4" port retracts it. This fail-safe-to-extended design means a loss of air pressure forces the rod back out. For sizing, this yields a safe working load of roughly 261 N, or a vertical lift capacity of about 22.2 kg with a 2:1 margin. This specific SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors.
Airtac MTF Mini Cylinder MTF40X40U Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF40X40U |
|---|---|
| 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 MTF40X40U
| 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 MTF40X40U Is Used
Heavy Tensioning
Pulls and holds up to 261 N of safe working load, ideal for keeping heavy belts or films taut during processing.
Fail-Safe Open Valves
The spring holds the 16 mm rod extended to mechanically peg valves open, with 1/4" air port retraction closing them on demand.
Vertical Lift Retract
Lifts or counterbalances loads up to 22.2 kg with a 2:1 safety margin, relying on air to pull the load downward.
Is the Airtac MTF Mini Cylinder MTF40X40U the Right Cylinder?
When evaluating this 40 mm bore option, size both ways against your requirements: if 434.8 N at 0.5 MPa is excessive, the smaller MTF32 provides 266.8 N, while no larger MTF bore exists above 40 mm. The single-acting pull configuration is optimal for spring-open/air-close mechanisms and fail-safe-extended tasks, provided you maintain the 0.2 MPa minimum pressure to overcome the spring. It features a U flat-end back cover and fixed TPU bumper pads for end-of-stroke deceleration across its 50-800 mm/s speed range.
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 MTF40X40U FAQ
This single-acting pull 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 internal return spring, with a maximum pressure of 1.0 MPa.
No, this specific SKU does not include a magnet, meaning it cannot support CMSG, DMSG, or EMSG switches. You would need the -S variant for sensing. Additionally, the internal spring ensures the rod fails to the extended position on air loss rather than holding a mid-stroke load.
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 MTF40X40U
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.