
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X70CA is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 70mm 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 402.2 N of push force at 0.5 MPa, this 32 mm bore double-acting actuator is built around a SUS304 stainless barrel with riveted aluminium covers that resist mild corrosion and washdown. Because the JIS-standard round body is physically shorter than an ISO 6432 cylinder for the same 70 mm stroke, it saves valuable mounting length in tight fixtures. The 1/4 inch port drives a 12 mm rod at speeds between 30 and 800 mm/s.
Inside, a heterogeneous two-way seal retains an oil film for long life, while fixed TPU bumper pads and a front-cover anti-impact pad soften the stroke-end impact. For practical sizing, plan for roughly 241 N of real work at 0.5 MPa, which translates to lifting about 20.5 kg vertically with a 2:1 safety margin. Note this specific SKU lacks a magnet and cannot host CMSG, DMSG or EMSG switches.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF32X70CA |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 70 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. |
| ×70 | 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.
Swings a sorting gate along a packaging line using the CA pivot mount, relying on the 402.2 N push force to deflect heavy cartons at high throughput.
Kicks stamped metal parts out of a die fixture, where the shorter JIS body saves critical length and the SUS304 barrel sheds cutting fluid washdown.
Acts as a pneumatic stop for incoming pallets, decelerating the 20.5 kg vertical equivalent load safely using the fixed TPU bumper pads.
When sizing this 32 mm bore, stepping down to the MF25 yields 245.3 N of push at 0.5 MPa, while stepping up to the MF40 provides 628.3 N. This MF32X70CA variant features a CA pivot back cover, making it ideal for clevis-mounted articulating loads. If your process requires position feedback, you must select the -S magnet version, as this base unit cannot accept a sensor.
Because the fixed TPU bumpers only decelerate the stroke end, they never act as a lock. If air pressure drops or the valve is centred, the piston will drift; to suspend a load safely, install an external rod lock or a pilot-operated check valve. Furthermore, on this 70 mm stroke, keep the rod load aligned to prevent side-loading and premature rod-bending wear.
Quick checklist
This 32 mm bore cylinder features a 1/4 inch air port and an M10x1.25 male rod thread. The double-acting thrust is 402.2 N push and 345.6 N pull at 0.5 MPa, increasing to 563 N push and 483.8 N pull at 0.7 MPa. Its theoretical maximum force is 82 kgf at 1.0 MPa.
No, this specific SKU lacks the internal magnet required for CMSG, DMSG or EMSG sensors; you must order the -S variant for position feedback. Additionally, while it is not ISO 6432 compliant, its JIS-standard round body is intentionally shorter than an ISO 6432 model for the same 70 mm stroke, saving mounting space.
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