
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X700SCM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 700mm 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.
Generating 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles heavy-duty positioning tasks. The 700 mm stroke is a non-standard, made-to-order length for the 40 mm bore, extending well past the 500 mm standard maximum to drive long-reach mechanisms. The SUS304 stainless steel barrel and riveted rolling-packed aluminium covers resist mild corrosion and washdown environments, while the two-way piston seal retains an oil film for prolonged operational life. Because the MF body is physically shorter than a comparable ISO 6432 cylinder for the same bore and stroke, it saves valuable mounting length in tight machine layouts.
Equipped with a built-in piston magnet (-S) for CMSG, DMSG, or EMSG switches, this unit feeds positional signals directly to your controller. It features a 1/4" air port and an M14x1.5 male rod thread. Fixed TPU bumper pads and a front-cover anti-impact pad soften the end-of-stroke impact by decelerating the piston, though they do not provide adjustable cushioning. For practical sizing, plan for a safe working load of roughly 377 N, which is about 60 percent of the 0.5 MPa push rating. Alternatively, it can reliably lift a 32 kg vertical load when applying a 2:1 safety margin.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X700SCM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 700 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×700 | 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.
Pushes heavy pallets across a wide transfer line using the full 700 mm extension, taking advantage of the 628.3 N thrust to overcome friction.
Raises a 30 kg security gate panel on a packaging conveyor, staying within the safe 32 kg vertical lift capacity at a 2:1 margin.
Actuates a sorting flap in a food-grade environment where the SUS304 stainless barrel withstands routine cleaning and chemical washdown.
When sizing this actuator, evaluate the force requirements carefully. If the 628.3 N push at 0.5 MPa exceeds your requirement, stepping down to the MF32 bore provides 402.2 N, which may better suit lighter assemblies. Since 40 mm is the largest available bore in the MF series, there is no larger standard option for higher force demands. The CM round-end back cover provides specific rear-pivot geometry, so verify your mounting bracket compatibility before ordering. You can attach the cylinder using LB foot, FA flange, SDB pivot, or TC trunnion hardware.
Because the 700 mm stroke is a non-standard made-to-order length, be mindful of rod-bending and side-load risks during long extensions, ensuring the load is guided to prevent premature seal wear. Additionally, a standard pneumatic cylinder will drift and drop its load if air pressure is lost or the valve is centred; the TPU bumpers only soften the stroke end and will not act as a brake. To suspend a load safely during an air failure, integrate an external rod lock or a pilot-operated check valve into your circuit.
Quick checklist
The 40 mm bore double-acting cylinder uses a 1/4" air port and an M14x1.5 male rod thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum force of 128.1 kgf at 1.0 MPa. The 700 mm stroke is a non-standard, made-to-order length.
Yes, the -S suffix indicates a built-in piston magnet compatible with CMSG, DMSG, and EMSG reed or electronic switches. The CM designation specifies a round-end back cover suitable for pivot mounting. The JIS-standard body is also shorter than an ISO 6432 cylinder for the same bore and stroke, saving machine space.
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