
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X150SUTC is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 150mm 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 628.3 N of push force at 0.5 MPa, this 40 mm bore double-acting mini cylinder handles demanding clamping and lifting tasks. The riveted rolling-packed structure joins an SUS304 stainless steel barrel to aluminium covers, resisting mild corrosion and washdown environments. Its heterogeneous two-way piston seal retains an oil film for long service life.
For the same 40 mm bore and 150 mm stroke, the JIS-standard MF body is physically shorter than an ISO 6432 cylinder, saving valuable mounting length in tight machine layouts. Fixed TPU bumper pads and a front-cover anti-impact pad soften stroke-end impact. Plan for about 377 N of real work at 0.5 MPa, which means it lifts roughly 32 kg vertically with a 2:1 safety margin.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X150SUTC |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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. |
| ×150 | 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 628.3 N push force to knock heavy stamped metal parts out of a die, relying on the TC trunnion to absorb angular misalignment during the 150 mm stroke.
Pushes loaded pallets onto a secondary packaging line, where the SUS304 stainless barrel withstands occasional washdowns and the compact JIS body fits within the conveyor frame.
Acts as a heavy-duty stopper for 30 kg material trays, safely handling the mass using the 32 kg vertical lift capacity while the fixed TPU bumpers absorb the impact.
When sizing this 40 mm bore, the smaller MF32 provides 402.2 N of push at 0.5 MPa, making it the step-down choice if your load is lighter. Since 40 mm is the largest available MF bore, exceeding this capacity requires a different cylinder family entirely. This SKU includes the -S magnet for CMSG, DMSG, or EMSG sensors, and features a U flat-end back cover with a TC trunnion mount.
Because the 150 mm stroke extends the Ø16 mm rod significantly, minimize side loads to prevent rod bending and premature seal wear. Note that a standard cylinder drifts when air is removed or the valve is centered; the bumpers only decelerate the stroke end and will not hold a load. Use an external pilot check valve or rod lock for secure positioning.
Quick checklist
This 40 mm bore cylinder uses 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, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
No, it does not conform to ISO 6432, though its JIS-standard body is deliberately shorter than an ISO 6432 cylinder to save space. It uses fixed TPU bumper pads for deceleration rather than an adjustable air cushion, and this unit features a U flat-end back cover with a TC trunnion mount.
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