Airtac MTF Mini Cylinder MTF40X30CM
The AirTAC Airtac MTF Mini Cylinder MTF40X30CM is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 30mm 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
- Stroke30 mm
- Port size1/4"
- Acting typeSingle acting, pull (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MTF Mini Cylinder MTF40X30CM
Delivering a robust 434.8 N pull force at 0.5 MPa, this 40 mm bore pneumatic mini cylinder is engineered for single-acting tension and return-to-extended tasks. The MTF40X30CM uses an internal spring to push the rod out to its rest state, while supplying air to the 1/4 inch port retracts it. Because the spring actively holds the rod out, the assembly naturally fails to the extended position if air pressure drops, creating a dependable spring-open, air-close mechanism.
Built as a JIS-standard round-body unit, its SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments. The compact riveted body is notably shorter than a comparable ISO 6432 cylinder, saving valuable machine space without sacrificing strength. This specific SKU lacks a magnet and cannot host position sensors; adding the -S option enables CMSG, DMSG, or EMSG switches. End-of-stroke deceleration relies on fixed TPU bumper pads rather than an adjustable air cushion. For sizing, the 434.8 N output at 0.5 MPa yields a safe working load of roughly 261 N, or about 22.2 kg of vertical lift with a 2:1 safety margin.
Airtac MTF Mini Cylinder MTF40X30CM Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF40X30CM |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 MTF40X30CM
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 MTF40X30CM Is Used
Heavy-Duty Tensioning
Pulls and maintains heavy straps or films taut with a 434.8 N force at 0.5 MPa, releasing tension instantly when air is applied.
Fail-Safe Gate Closing
Holds a heavy access door securely open via spring force, and uses the 1/4 inch air port to pull the gate closed on demand.
Spring-Return Lifting
Retracts a 22 kg fixture vertically against gravity using compressed air, allowing the internal spring to lower the load safely if power fails.
Is the Airtac MTF Mini Cylinder MTF40X30CM the Right Cylinder?
Choose this 40 mm bore model when your application demands high pulling power in a compact footprint, requiring at least 0.2 MPa of air pressure to overcome the internal spring. If the 434.8 N pull at 0.5 MPa exceeds your needs, step down to the MTF32, which provides 266.8 N at the same pressure. As the largest bore in the MTF series, there is no larger standard size available. The 30 mm stroke and CM round-end rear cover make it ideal for tight pivot or direct-mount assemblies. Since this configuration ships without a magnet, order an -S variant if you require CMSG, DMSG, or EMSG position sensing. Mounting options include LB foot, FA flange, SDB pivot-block, and TC trunnion brackets.
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 MTF40X30CM FAQ
This 40 mm bore cylinder generates 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 return spring, with a maximum pressure limit of 1.0 MPa.
No, the spring drives the rod to the fully extended position upon air loss, so it cannot hold an arbitrary mid-stroke load. Additionally, this SKU lacks a magnet and cannot accept CMSG, DMSG, or EMSG sensors; you must specify the -S option for position sensing.
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