
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X500SCM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 500mm 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 across its full 500 mm travel. The 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. Because the MF body is shorter than an ISO 6432 cylinder for the same bore and stroke, it saves valuable mounting length on long-stroke machinery.
The integrated -S piston magnet allows direct mounting of CMSG, DMSG, or EMSG switches for position sensing, and the CM round-end back cover suits pivot-style installations. Fixed TPU bumper pads and a front-cover anti-impact pad soften the end-of-stroke impact without requiring adjustment. For practical actuation at 0.5 MPa, plan for roughly 377 N of usable work, which means it can vertically lift about 32 kg with a 2:1 safety margin.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X500SCM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 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. |
| ×500 | 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 onto secondary packaging lines using 628.3 N of thrust at 0.5 MPa across a 500 mm travel distance.
Raises 30 kg access gates on automated storage systems, safely operating within the 32 kg vertical lift capacity.
Clears dense stamped metal parts from press beds, utilising the CM round-end cover for reliable pivot mounting.
When sizing this 40 mm bore, compare its 628.3 N push force at 0.5 MPa against the smaller MF32, which yields 402.2 N. Since 40 mm is the largest available MF bore, exceeding this thrust requires a different cylinder family. The 1/4" port and M14x1.5 male rod thread are fixed to this bore size. The CM round-end rear cover provides a pivot point for angular alignment.
At the maximum standard stroke of 500 mm, the Ø16 mm rod is highly susceptible to side-loading and bending forces, so rigid guidance and a free-floating mount are essential. Note that a standard cylinder drifts when air is removed or the valve is centred; the TPU bumpers only decelerate the stroke end and do not act as a brake. To suspend a load safely, install an external rod lock or a pilot-operated check valve.
Quick checklist
The 40 mm bore operates on a 1/4" port. 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 of 128.1 kgf at 1.0 MPa.
The CM round-end back cover allows pivot mounting, and the built-in -S magnet supports CMSG, DMSG, or EMSG switches. The JIS-standard body is shorter than an ISO 6432 cylinder, and fixed TPU bumpers decelerate the stroke ends.
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