
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X180SCM 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 40 mm bore double-acting actuator handles heavy automation tasks with ease. The JIS-standard round-body design is physically shorter than an equivalent ISO 6432 cylinder, saving valuable mounting length in tight machine layouts. Its SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments. Inside, a heterogeneous two-way seal retains an oil film for long service life, while fixed TPU bumper pads and a front-cover anti-impact pad soften stroke-end impacts.
Because this SKU includes the -S magnet, it is fully compatible with CMSG, DMSG, and EMSG reed or electronic switches for position sensing. The 1/4" port feeds air efficiently to move the 16 mm rod at speeds between 30 and 800 mm/s. For practical sizing, plan for a real work load of about 377 N, which is roughly 60 percent of the 0.5 MPa rating. Alternatively, it can safely lift a 32 kg part vertically when applying a 2:1 safety margin to the available force.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X180SCM |
|---|---|
| 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.
Uses the robust 628.3 N push force at 0.5 MPa to knock heavy stamped metal parts out of a die on an automotive production line.
Deploys the 180 mm stroke to press down and stabilize stacked cartons on a pallet before stretch wrapping, relying on the CM pivot for alignment.
Swings a heavy-duty deflector gate on a logistics conveyor, utilizing the SUS304 stainless barrel to withstand dusty warehouse conditions.
When sizing this 40 mm bore unit, compare it directly against the smaller MF32, which yields 402.2 N of push force at 0.5 MPa. Since 40 mm is the largest available bore in the MF series, moving beyond 628.3 N requires stepping up to a different cylinder family entirely. The CM round-end back cover on this model allows flexible rear pivot mounting, complementing available LB foot, FA flange, SDB pivot, and TC trunnion front options.
Keep in mind that a standard double-acting cylinder like this will drift and cannot hold a vertical load if air pressure drops or the directional valve is centred; the TPU bumpers only decelerate the stroke end and act as neither a brake nor a lock. To secure a suspended load, integrate an external pilot-operated check valve or a dedicated rod lock. Additionally, the 180 mm stroke requires attention to side loading—ensure the load is guided to prevent rod bending and premature seal wear.
Quick checklist
This 40 mm bore cylinder features a 1/4" air port and an M14x1.5 male rod thread. It generates 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, the included -S magnet allows you to mount CMSG, DMSG, or EMSG switches directly onto the round body. Furthermore, for the same 40 mm bore and 180 mm stroke, this JIS-standard actuator is physically shorter than an ISO 6432 cylinder, providing a compact footprint without conforming to that interface standard.
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