
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X180SCA is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 180mm 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 628.3 N of push force at 0.5 MPa, this double-acting AirTAC MF40X180SCA mini cylinder handles heavy-duty positioning in tight spaces. Because the JIS-standard round body is physically shorter than a comparable ISO 6432 unit for the same 40 mm bore and 180 mm stroke, it saves valuable mounting length without sacrificing power.
The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments. Fixed TPU bumper pads and a front-cover anti-impact pad soften stroke-end impacts, though they decelerate rather than act as an adjustable cushion. The built-in magnet (-S) supports CMSG, DMSG, and EMSG sensors, while the CA pivot back cover simplifies articulated mounting. Plan for a safe working load of about 377 N, which means it can lift roughly 32 kg vertically with a 2:1 safety margin.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X180SCA |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 180 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. |
| ×180 | 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.
Drives a 32 kg bearing housing into a machined housing on an automated assembly line, utilising the 628.3 N push force at 0.5 MPa.
Actuates a heavy diverter arm on a packaging conveyor, where the CA pivot back cover accommodates the swing motion and the shorter JIS body fits the tight transfer gap.
Raises a gravity chute gate in a distribution hub; the 180 mm stroke provides the necessary clearance, while the SUS304 barrel withstands dusty ambient conditions.
When sizing this 40 mm bore unit, verify your actual load requirements. If the 628.3 N push at 0.5 MPa exceeds your needs, stepping down to an MF32 provides 402.2 N; since 40 mm is the largest standard MF bore, applications requiring more force will need a different cylinder family. The 1/4" port and M14x1.5 male rod thread match the heavy 16 mm rod, and the CA rear pivot is ideal for angular loads.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centred—the TPU bumpers only soften the end of stroke and cannot hold a load. To prevent dropping a suspended weight, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
Quick checklist
This 40 mm bore cylinder features a 1/4" air port and an M14x1.5 male rod thread. The double-acting thrust is 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
Yes to the sensor, no to the cushion. The -S suffix means a magnet is built into the piston, allowing you to mount CMSG, DMSG, or EMSG reed and electronic switches. For deceleration, it relies on fixed TPU bumper pads; if you need an adjustable air cushion for high speeds, you must switch to the MFC variant.
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