Airtac MTF Mini Cylinder MTF32X40SUTC
The AirTAC Airtac MTF Mini Cylinder MTF32X40SUTC is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø32mm 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.
- BoreØ32 mm
- Stroke40 mm
- Port size1/4"
- Acting typeSingle acting, pull (spring return)
- Rod threadM10×1.25
- 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 MTF32X40SUTC
Delivering 266.8 N of net pull at 0.5 MPa, this JIS-standard round-body mini cylinder uses a SUS304 stainless barrel and riveted aluminium covers to save mounting length compared to an ISO 6432 unit. The MTF32X40SUTC is a single-acting pull type: an internal spring holds the piston rod extended at rest, while supplying air to the 1/4 inch port retracts it. If air pressure drops, the spring drives the rod back out, providing a fail-safe-to-extended action for tensioning or closing tasks.
The quoted pull force is already net of the spring resistance, requiring a minimum 0.2 MPa operating pressure to overcome it. For sizing, this 32 mm bore yields a safe working load of roughly 160 N, or a vertical lift capacity of about 13.6 kg with a 2:1 safety margin. This -S variant includes a piston magnet for CMSG, DMSG, or EMSG position sensing, and features fixed TPU bumper pads to cushion stroke ends.
Airtac MTF Mini Cylinder MTF32X40SUTC Technical Specifications
| Model | Airtac MTF Mini Cylinder MTF32X40SUTC |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | 1/4" |
| Rod thread | M10×1.25 |
| 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 (Ø32mm)
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 266.8 N |
| 0.7 MPa | 405.0 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 MTF32X40SUTC
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 32 | 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 MTF32X40SUTC Is Used
Tension Mechanisms
Maintains 160 N of safe pulling tension on belts or cables, using air to release the load and the internal spring to pull taut at rest.
Fail-Safe Open Valves
Holds a 1/4 inch ported valve open via spring force; air retracts the 12 mm rod to close it, ensuring the valve opens automatically on air loss.
Clamp Release
Uses the 266.8 N pull force to retract a holding clamp against packaging, letting the spring extend the arm to secure the item pneumatically.
Is the Airtac MTF Mini Cylinder MTF32X40SUTC the Right Cylinder?
When sizing this 32 mm bore, evaluate both ends of the range: step down to the MTF25 for 153.6 N @0.5 MPa, or step up to the MTF40 for 434.8 N @0.5 MPa. Choose this single-acting pull cylinder for spring-open/air-close mechanisms where losing air pressure safely extends the rod. Remember the 0.2 MPa pressure floor needed to beat the spring.
This configuration includes a U flat-end back cover and a TC trunnion mount for pivot applications. Because it carries the -S suffix, it supports CMSG, DMSG, and EMSG switches; a standard SKU without the magnet cannot accept a sensor.
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 MTF32X40SUTC FAQ
This 32 mm bore cylinder provides a net pull force of 266.8 N at 0.5 MPa and 405 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the internal spring.
The spring constantly extends the rod, so on air loss the cylinder fails to the extended position. It cannot hold an arbitrary mid-stroke load; for that, use a double-acting MF cylinder with an external rod lock.
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