Airtac MF32-40 Stainless Steel Mini Cylinder MF40X40SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X40SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 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 MF40X40SU
Delivering 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles heavy-duty compact automation. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown, while the piston's two-way seal retains an oil film for long service life. Because the MF body is shorter than an ISO 6432 cylinder for the same bore and stroke, it saves valuable mounting length in tight machinery.
Equipped with a built-in magnet and a flat-end U back cover, the unit uses fixed TPU bumper pads alongside a front-cover anti-impact pad to soften stroke-end impact. For practical sizing, plan for roughly 377 N of real work at 0.5 MPa, which means it can safely lift about 32 kg vertically with a 2:1 margin. The 1/4" port and M14x1.5 male rod thread accommodate robust pneumatic flow for its 40 mm bore.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X40SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X40SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MF40X40SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 MF40X40SU Is Used
Press-Fit Bushings
Provides the 628.3 N push at 0.5 MPa needed to seat metal bushings into housings on an automated assembly line.
Vertical Parts Lift
Raises heavy chucks or fixtures weighing up to 32 kg, using the flat-end U rear cover for stable vertical mounting.
Pallet Diverter
Actuates a heavy diverter arm on a conveyor, leveraging the compact JIS body length to fit within tight transfer tunnels.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X40SU the Right Cylinder?
When sizing this 40 mm bore, dropping down to the MF32 yields 402.2 N of push at 0.5 MPa, whereas the MF40 is the largest available in the series, so no larger standard option exists. If your mechanism relies on maintaining elevation during air loss or valve centring, note that the piston will drift, as the internal pads only decelerate the stroke end rather than locking it; an external rod lock or pilot check valve is required for holding. The included -S magnet enables CMSG, DMSG, or EMSG switches for position sensing. On this short 40 mm stroke, side-load stress on the 16 mm rod is minimal, but ensuring strict alignment will still maximize seal life.
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 MF40X40SU FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. It uses a 1/4" air port and an M14x1.5 male rod thread.
It is a JIS-standard round-body cylinder that is physically shorter than an ISO 6432 unit for the same bore and stroke, but it does not conform to the ISO standard. It uses fixed TPU bumper pads to decelerate the stroke end, not an adjustable air cushion. The included -S magnet allows CMSG, DMSG, or EMSG sensors to be fitted.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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