Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCM
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 400mm 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.
- BoreØ40 mm
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCM
Delivering 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles heavy-duty actuation within a compact footprint. Because the SUS304 stainless-steel barrel and riveted aluminium covers yield a shorter overall body than an ISO 6432 cylinder of the same bore and stroke, it slots neatly into tight machine frames. The internal piston relies on a two-way oil-retaining seal for long service life, while fixed TPU bumper pads and a front-cover anti-impact pad absorb stroke-end shock.
Fitted with a 1/4" air port, a 16 mm rod, and an M14x1.5 male thread, the 40 mm bore generates substantial output. Planning for roughly 377 N of actual work at 0.5 MPa leaves a safe performance margin. Alternatively, it can vertically lift about 32 kg when applying a 2:1 safety factor to the 0.5 MPa push rating. The built-in piston magnet allows direct mounting of CMSG, DMSG, or EMSG sensors, and the round-end CM back cover simplifies rear pivot mounting.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCM Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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.
Theoretical Output Force (Ø40mm)
| 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.
Model Code: Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCM
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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.
Where the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCM Is Used
Pallet Diversion Arm
Swings a heavy diverter bar on a packaging line to route loaded pallets, utilising the 628.3 N push force to overcome side friction at 0.5 MPa.
Vertical Parts Elevator
Raises 30 kg tote bins between conveyor tiers; the 400 mm stroke provides the necessary lift distance while the CM rear pivot accommodates minor alignment shifts.
Press Tool Ejection
Pushes finished stamped components out of a die bed, where the shorter JIS body length preserves valuable press clamping area compared to standard ISO 6432 units.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCM the Right Cylinder?
When sizing this 40 mm bore unit, compare its 628.3 N push force at 0.5 MPa against the smaller MF32, which provides 402.2 N. Since 40 mm is the largest available MF bore, moving beyond this capacity requires a different cylinder family. For this 400 mm stroke, ensure your mounting configuration—such as an FA flange or TC trunnion—prevents rod side-loading and bending, as long strokes are susceptible to deflection.
Remember that the fixed TPU bumpers only decelerate the piston near the stroke end; they do not function as a braking mechanism. If air pressure drops or the directional valve is centred, the rod will drift, so install an external pilot-operated check valve or a dedicated rod lock to suspend loads safely.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCM FAQ
This 40 mm bore cylinder features a 1/4" air port and a 16 mm rod. 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.
No, the fixed TPU bumper pads only soften the impact at the stroke end and do not act as a lock. If air is lost or the valve is centred, the piston will drift downward. You must use an external pilot check valve or rod lock to hold a vertical load safely.
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