
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X175CM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 175mm 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 40 mm bore mini cylinder handles demanding clamping and lifting tasks. The JIS-standard round-body design is physically shorter than a comparable ISO 6432 unit, delivering a noticeable packaging advantage in tight machine fixtures. It features a SUS304 stainless-steel barrel with aluminium covers secured by a riveted rolling-packed structure, resisting mild corrosion and washdown environments. The piston relies on a two-way oil-retaining seal, while fixed TPU bumper pads and a front-cover anti-impact pad soften stroke-end impacts.
For practical sizing, plan for roughly 377 N of real work at 0.5 MPa, which is about 60% of the theoretical rating. Alternatively, it lifts approximately 32 kg vertically when applying a 2:1 safety margin. This specific SKU lacks a magnet and cannot accept CMSG, DMSG, or EMSG sensors. The 1/4" port and M14x1.5 male rod thread accommodate robust pneumatic flow, and the CM round-end back cover suits pivot-mount installations.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X175CM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 175 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. |
| ×175 | 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.
Supplies the 628.3 N push force needed to secure smaller plastic injection mould halves against injection pressure during the forming cycle.
Extends 175 mm to actuate a heavy routing gate on a packaging line, using its compact JIS body to fit within narrow conveyor side-frames.
Deploys a robust physical stop barrier for loaded pallets on a gravity roller track, safely halting loads up to 32 kg vertically.
When sizing this actuator, verify if the 628.3 N push at 0.5 MPa matches your actual load requirements. If your application is lighter, stepping down to the MF32 bore provides 402.2 N at 0.5 MPa and saves space, though the 40 mm bore remains the largest available option in the MF family for heavier jobs. For this 175 mm stroke, ensure your mounting method—such as an LB foot bracket or FA flange—prevents rod side-loading and bending forces.
Because this is a standard double-acting cylinder, it will drift and cannot hold a vertical load if air pressure drops or the valve is centred; the TPU pads only decelerate the stroke end rather than locking the piston. Integrate a pilot-operated check valve or an external rod lock for secure position holding. Additionally, since this model lacks the -S magnet, it cannot support magnetic position sensing.
Quick checklist
This 40 mm bore cylinder features a 1/4" port and an M14x1.5 male rod thread. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push is 879.6 N and the pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches; you would need the -S variant for sensing. The CM back cover is a round-end style that pairs with a clevis joint for pivot mounting. The riveted SUS304 stainless build is shorter than an ISO 6432 cylinder of the same bore and stroke.
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