Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 80mm 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
- Stroke80 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 MF40X80SU
Generating up to 628.3 N of push force at 0.5 MPa, the AirTAC MF40X80SU is a robust 40 mm bore double-acting JIS-standard round-body mini cylinder. Because its riveted rolling-packed structure is inherently shorter than a comparable ISO 6432 unit for the same 80 mm stroke, it delivers a tangible packaging advantage in tight machinery frames. The SUS304 stainless barrel paired with aluminium covers naturally resists mild corrosion and washdown environments.
The internal piston relies on a heterogeneous two-way seal that retains an oil film for prolonged lifespan, while fixed TPU bumper pads and a front-cover anti-impact pad work together to soften end-of-stroke impacts. Thanks to the integrated magnet, this -S variant supports CMSG, DMSG and EMSG sensors for position detection. For practical sizing, anticipate a safe working load of roughly 377 N, which translates to lifting about 32 kg vertically with a 2:1 safety margin.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 MF40X80SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 MF40X80SU Is Used
Injection Mould Ejection
Provides the robust 628.3 N push force required to positively eject dense plastic parts from an injection moulding tool before the robotic arm extracts them.
Heavy Package Diversion
Actuates a heavy-duty diverter arm on a logistics conveyor, using its 80 mm stroke to push dense cartons cleanly onto a secondary packaging line.
Palletiser Stop Gate
Functions as a hard stop gate in an automated palletiser, securely halting incoming heavy product layers at 0.5 MPa without bouncing back.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80SU the Right Cylinder?
When sizing this unit, stepping down to the MF32 bore drops the 0.5 MPa push force to 402.2 N, whereas the 40 mm bore represents the maximum standard capacity available in the MF family. The U flat-end back cover suits direct rear mounting against flat plates. If your mechanism must maintain vertical elevation during a loss of air supply or valve centring, note that this plain cylinder will drift; the TPU pads only decelerate the stroke end and do not function as a brake. You must incorporate an external rod lock or a pilot-operated check valve to secure suspended loads. Furthermore, the 80 mm stroke is well within standard limits, but always ensure rigid guidance to prevent rod-bending side loads.
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 MF40X80SU FAQ
This 40 mm bore double-acting cylinder features a 1/4" air port and an M14x1.5 male rod thread. At 0.5 MPa it delivers 628.3 N of push force and 527.8 N of pull force. At 0.7 MPa the push increases to 879.6 N and the pull to 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
It features a SUS304 stainless barrel with riveted aluminium covers, making the body shorter than an ISO 6432 cylinder for the same stroke. The SU designation means it has a U flat-end back cover and a built-in magnet (-S), allowing you to mount CMSG, DMSG or EMSG switches for precise position sensing.
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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