
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X40CA 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 JIS-standard round-body mini cylinder handles robust clamping tasks. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion, while the internal two-way seal retains an oil film for extended mechanical life. A 1/4" port supplies the 12 mm rod for rapid actuation.
Because the riveted rolling-packed structure is physically shorter than a comparable ISO 6432 unit, it saves valuable mounting length in compact fixtures. The fixed TPU bumper pads and front-cover anti-impact pad soften stroke-end impact without offering adjustable cushioning. Plan for roughly 241 N of actual work at 0.5 MPa, which translates to safely lifting about 20.5 kg vertically against gravity.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF32X40CA |
|---|---|
| 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.
Uses the CA pivot mount to swing a 20 kg machining fixture into place, utilising the 402.2 N push force to secure the part during milling.
Deploys the 12 mm rod rapidly to halt medium-weight cartons on a packaging line, where the short 40 mm stroke keeps the footprint minimal.
Moves a spot-welding head into position with enough force to compress metal sheets, benefiting from the SUS304 barrel's resistance to weld spatter and washdown.
When sizing this 32 mm bore, the smaller MF25 provides 245.3 N of push at 0.5 MPa, whereas stepping up to the MF40 yields 628.3 N. This model features a CA pivot back cover, ideal for articulated rod-end loads, and can be paired with LB, FA, SDB, or TC mounts. Note that this specific SKU lacks the -S magnet, meaning it cannot accept CMSG, DMSG, or EMSG position sensors. If you require stroke-end signalling, select the -S variant.
Because the 40 mm stroke is very short, side-load stress on the M10x1.25 rod thread is minimal. Keep in mind that standard double-acting operation will drift if air pressure drops or the valve is centred; the TPU pads only decelerate the stroke end and do not function as a braking lock. To suspend a load safely during an air loss event, integrate an external pilot-operated check valve or a dedicated rod lock.
Quick checklist
This 32 mm bore cylinder features a 1/4" port and an M10x1.25 male rod thread. At 0.5 MPa it generates 402.2 N of push force and 345.6 N of pull force. At 0.7 MPa the push increases to 563 N and the pull to 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa.
This specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches; you must choose an -S variant for sensing. The CA back cover provides a pivot pin mount, allowing the cylinder body to swing freely during articulation. Fixed TPU bumpers decelerate the stroke ends, but an external rod lock is required to hold a load if air pressure is lost.
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