
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X40CM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 40mm 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 402.2 N of push force at 0.5 MPa, this double-acting 32 mm bore mini cylinder is built around a SUS304 stainless barrel with riveted aluminium covers. The rolling-packed structure shrinks the overall body length compared to an ISO 6432 unit of identical bore and stroke, freeing up valuable space in dense machinery. A 1/4 inch port feeds the chambers, while fixed TPU bumper pads and a front-cover anti-impact pad absorb stroke-end shock.
The heterogeneous two-way piston seal retains an oil film for extended lifespan, and the round-end CM back cover suits pivot-style installations. Because this specific SKU lacks the -S magnet, it cannot host CMSG, DMSG, or EMSG reed switches. Plan for roughly 241 N of actual work at 0.5 MPa, which translates to lifting about 20.5 kg vertically with a safe 2:1 margin.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF32X40CM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M10×1.25 |
| 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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.
Secures aluminium extrusions in a CNC machining fixture using its 402.2 N thrust and compact 40 mm stroke.
Folds corrugated cardboard flaps on a continuous packaging line where the shorter JIS body prevents collision with passing product.
Presses small bushings into housings on an automated assembly dial table, safely operating within the 241 N working load limit.
If 245.3 N from the smaller MF25 is insufficient, this 32 mm bore steps up the thrust significantly; should you need even more power, the MF40 provides 628.3 N at 0.5 MPa. With a short 40 mm stroke, side-load stress on the 12 mm rod is minimal, making it ideal for compact clamping. Remember that exhausting air causes the piston to drift, so suspend loads using a pilot-operated check valve rather than relying on the bumper pads. To add position sensing, you must select the -S magnet variant instead of this base model.
Quick checklist
This 32 mm bore double-acting cylinder uses a 1/4 inch port and generates 402.2 N push / 345.6 N pull at 0.5 MPa, and 563 N push / 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
No, this specific SKU does not have a magnet and cannot accept CMSG, DMSG, or EMSG switches. You must order the -S variant for sensing. It features a CM round-end back cover and fixed TPU bumper pads rather than an adjustable air cushion.
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