
The AirTAC Airtac MTF Mini Cylinder MTF40X100SCM is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 100mm 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.
Delivering a robust 434.8 N of pull force at 0.5 MPa, the AirTAC MTF40X100SCM is a JIS-standard round-body mini cylinder engineered for single-acting pull operation. An internal spring holds the rod in the extended position, while supplying air to the 1/4 inch port retracts it. Because the spring constantly drives the rod outward, the cylinder naturally fails to the extended state during air loss, making it an excellent choice for spring-open and air-close mechanisms.
The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments. Furthermore, this JIS-standard body is purposefully shorter than a comparable ISO 6432 cylinder, saving valuable mounting length. This specific SKU includes a built-in piston magnet for position sensing and a CM round-end rear cover. The quoted pull force is already net of the spring resistance, yielding a safe working load of roughly 261 N or a 2:1 vertical lift capacity of about 22.2 kg.
| Model | Airtac MTF Mini Cylinder MTF40X100SCM |
|---|---|
| Series | MTF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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.
| 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.
| MTF | JIS-standard round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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.
Uses the 434.8 N pull force to draw back and maintain tension on belts or webbing, automatically snapping back to the extended rest position when air pressure is removed.
Holds a gate or valve open via the internal spring; applying air to the 1/4 inch port pulls the 16 mm rod inward to close it, ensuring a safe extended state during power loss.
Stays extended at rest on a packaging line, using air to rapidly retract the arm and clear defective items before the spring pushes it back out for the next cycle.
When sizing this 40 mm bore model, evaluate your tension requirements against its 434.8 N pull at 0.5 MPa. If your load is lighter, stepping down to the MTF32 provides 266.8 N of pull and a more compact footprint; since 40 mm is the largest available MTF bore, heavier applications require a different cylinder family. Remember that a minimum operating pressure of 0.2 MPa is required to overcome the internal spring.
This configuration is ideal for return-to-extended fail-safe tasks. It includes the -S magnet option, allowing you to mount CMSG, DMSG, or EMSG sensors directly onto the cylinder body. For mounting flexibility, you can pair the CM round-end cover with LB foot, FA flange, SDB pivot, or TC trunnion brackets. End-of-stroke deceleration is handled by fixed TPU bumper pads rather than an adjustable air cushion.
Quick checklist
This 40 mm bore cylinder provides a single-acting pull force of 434.8 N at 0.5 MPa and 645.8 N at 0.7 MPa. These figures are net of the spring resistance. It requires a minimum operating pressure of 0.2 MPa to overcome the spring, with a maximum pressure of 1.0 MPa.
The internal spring constantly extends the rod, meaning air is only used to retract it. If air pressure is lost, the spring drives the rod to the fully extended position. It cannot hold a mid-stroke load; for that, a double-acting MF cylinder with an external rod lock is required.
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