
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X350CMTC is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 350mm 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 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles heavy-duty positioning tasks. Its SUS304 stainless-steel barrel and riveted aluminium covers resist mild corrosion and washdown, while the two-way piston seal retains an oil film for extended mechanical life. For practical actuation, plan your payload around 377 N of usable work, which comfortably lifts about 32 kg vertically with a 2:1 safety margin.
The body is purposefully shorter than an ISO 6432 cylinder for the same 40 mm bore and 350 mm stroke, saving valuable mounting length in tight machine cells. Fixed TPU bumper pads and a front-cover anti-impact pad soften the end-of-stroke impact, decelerating the load without adjustable cushioning. This specific configuration features a CM round-end rear cover and a TC trunnion mount; because it lacks the -S suffix, it cannot accept CMSG, DMSG, or EMSG magnetic sensors.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X350CMTC |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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. |
| ×350 | 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 coil stock into a stamping press using the 628.3 N output, while the TC trunnion absorbs slight alignment shifts during the 350 mm extension.
Actuates a heavy diverter arm on a packaging conveyor, where the shorter JIS body prevents the cylinder from intruding into the adjacent walk lane.
Lowers an 18 kg machining fixture with a 2:1 safety margin, relying on the fixed TPU pads to soften the bottoming impact at the end of the 350 mm stroke.
When sizing this 40 mm bore unit, compare its 628.3 N push force at 0.5 MPa against the smaller MF32, which provides 402.2 N. Since 40 mm is the largest available MF bore, moving heavier loads requires ganging multiple cylinders or switching to a larger series. The TC trunnion mount paired with the CM round-end rear cover suits pivoting applications, but verify your frame geometry can accommodate the 350 mm stroke without excessive side-loading on the 16 mm rod.
Remember that a standard double-acting cylinder drifts when air pressure is removed or the valve is centred, as the TPU pads only dampen stroke ends rather than locking the piston. To suspend a vertical load safely, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit. Furthermore, the absence of a magnet on this SKU means position sensing is unavailable without switching to the -S variant.
Quick checklist
This 40 mm bore cylinder features 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, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
No, this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. It uses fixed TPU bumper pads that decelerate the stroke end rather than an adjustable air cushion; for variable cushioning, look at the MFC variant.
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