Airtac MF32-40 Stainless Steel Mini Cylinder MF40X140SCA
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X140SCA 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 MF40X140SCA
Delivering 628.3 N of push force at 0.5 MPa, this double-acting 40 mm bore JIS-standard round-body mini cylinder handles heavy-duty positioning. Because the SUS304 stainless barrel and riveted aluminium covers form a shorter envelope than an ISO 6432 cylinder of the same bore and stroke, it drops neatly into tight machine frames. The integrated -S piston magnet allows direct mounting of CMSG, DMSG, or EMSG switches for end-of-stroke detection.
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 absorb stroke-end shocks. Plan for roughly 377 N of actual work at 0.5 MPa to maintain a safe margin, which translates to lifting about 32 kg vertically against gravity. Air connects via a 1/4 inch port, and the CA pivot back cover simplifies angular rod alignment.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X140SCA Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X140SCA |
|---|---|
| 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 MF40X140SCA
| 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 MF40X140SCA Is Used
Press Fit Subassembly
Drives a 32 kg bearing housing into a machined chuck using the full 628.3 N push force available at 0.5 MPa.
Pallet Diverter Arm
Actuates a heavy routing gate on a packaging line, where the CA pivot back cover accommodates the angular arc.
Carton Flap Folder
Folds thick cardboard flaps on high-speed case erectors, relying on the SUS304 stainless barrel to resist washdown.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X140SCA the Right Cylinder?
When sizing this 40 mm bore unit, step down to the MF32 if your load requires only 402.2 N of push at 0.5 MPa, as the MF40 is the largest available bore in the series. For applications needing true position holding on air loss or a centred valve, remember this cylinder will drift; you must add an external rod lock or pilot-operated check valve, as the TPU pads only decelerate the stroke end without braking. The built-in -S magnet supports reed and electronic sensors, and the CA rear pivot works well with SDB pivot-block mountings. At a 140 mm stroke, keep your load guided to prevent rod bending and side-load wear.
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 MF40X140SCA FAQ
This 40 mm bore double-acting cylinder pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa, and the air port size is 1/4 inch.
The JIS-standard riveted stainless body is physically shorter than an ISO 6432 cylinder for the same 40 mm bore and 140 mm stroke, saving mounting length. It uses fixed TPU bumper pads to decelerate the stroke end rather than an adjustable air cushion, and the included -S magnet enables CMSG, DMSG, or EMSG sensors.
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1-Year Warranty
Covers non-human-caused product damage.
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