Airtac MF32-40 Stainless Steel Mini Cylinder MF40X140SCM
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X140SCM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 140mm 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
- Stroke140 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 MF40X140SCM
Delivering 628.3 N of push force at 0.5 MPa, this 40 mm bore double-acting actuator handles heavy-duty tasks within tight machinery envelopes. Because the JIS-standard round body is physically shorter than a comparable ISO 6432 cylinder, it saves valuable mounting length without sacrificing the 140 mm stroke. The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments.
The piston relies on a heterogeneous two-way seal that retains an oil film for long service life, while fixed TPU bumper pads and a front-cover anti-impact pad soften stroke-end impacts. Plan for about 377 N of actual work at 0.5 MPa, which safely lifts roughly 32 kg vertically with a 2:1 margin. This specific SKU includes a built-in magnet for position sensing and features a round-end CM rear cover.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X140SCM Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X140SCM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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 MF40X140SCM
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 MF40X140SCM Is Used
Carton Diverter Arm
Swings heavy cardboard packaging across sorting lanes, utilising the 628.3 N push force to overcome the friction of fully loaded boxes on the belt.
Press Ejection Pin
Kicks stamped metal parts out of a die fixture, where the shorter JIS body length prevents interference with the tight press tooling layout.
Pallet Stopper Gate
Acts as a robust pneumatic stop for incoming pallets on a roller conveyor, safely absorbing the impact via the fixed TPU bumper pads.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X140SCM the Right Cylinder?
When sizing this bore, verify if the 527.8 N pull at 0.5 MPa is sufficient for your retraction force. If your application requires less push, stepping down to the MF32 yields 402.2 N; since 40 mm is the largest available MF bore, exceeding 628.3 N requires a different cylinder family entirely. The 1/4" port and M14x1.5 male rod thread match the heavy 40 mm class.
Remember that a standard cylinder drifts if air pressure drops or the valve is centred, as the internal bumpers only decelerate the stroke end rather than locking the load. For vertical or suspended loads that must hold position securely, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 MF40X140SCM FAQ
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.
The S in the model code denotes a built-in piston magnet, allowing you to mount CMSG, DMSG, or EMSG sensors for position detection. The fixed TPU bumpers only decelerate the piston at stroke end to reduce impact; they do not function as a brake, so the rod will drift if air is lost.
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Covers non-human-caused product damage.
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