Airtac MF32-40 Stainless Steel Mini Cylinder MF40X115SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X115SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 115mm 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
- Stroke115 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 MF40X115SU
Generating 628.3 N of push force at 0.5 MPa, this double-acting AirTAC MF40X115SU mini cylinder handles heavier duty cycles within a compact footprint. The JIS-standard round body is physically shorter than a comparable ISO 6432 unit, saving valuable mounting length in tight machinery. It features a SUS304 stainless steel barrel with riveted aluminium covers that resist mild corrosion and washdown environments. The 1/4" port feeds the bore, while fixed TPU bumper pads and a front-cover anti-impact pad soften the stroke-end impact.
The piston relies on a heterogeneous two-way seal that retains an oil film for extended mechanical life. For practical sizing, plan for around 377 N of real work at 0.5 MPa, which safely lifts about 32 kg vertically with a 2:1 margin. The included -S magnet enables position sensing with CMSG, DMSG or EMSG switches, and the U flat-end back cover provides a flush rear mounting face for direct bolting.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X115SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X115SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 115 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 MF40X115SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×115 | 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 MF40X115SU Is Used
Pallet Diverting Gate
Uses the 628.3 N push force at 0.5 MPa to positively deflect heavy timber pallets onto a secondary packaging line without stalling.
Carton Flap Folder
Employs the 115 mm stroke and U flat-end rear cover to tuck heavy corrugated flaps prior to taping, fitting neatly into narrow machine frames.
Stamping Press Feed
Leverages the short JIS body length to push metal blanks into a press die, saving axial space while the -S magnet confirms part insertion.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X115SU the Right Cylinder?
When sizing this 40 mm bore, step down to the MF32 if your task only needs 402.2 N at 0.5 MPa, as 40 mm is the largest available MF bore. If your mechanism must hold a load vertically during an air loss or valve centre, remember this standard cylinder will drift; the TPU pads only decelerate the stroke end and do not act as a brake. You must add an external rod lock or pilot check valve for secure holding. For this 115 mm stroke, ensure your mounting method—such as LB foot, FA flange, or TC trunnion—adequately supports the rod against side loads to prevent bending.
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 MF40X115SU FAQ
This 40 mm bore double-acting cylinder has a 1/4" port and an M14x1.5 male rod thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
No, the base MF uses fixed TPU bumper pads to decelerate the stroke end, not an adjustable air cushion; for variable cushioning look at the MFC variant. It is a JIS-standard round-body cylinder that is physically shorter than an ISO 6432 model, but it does not conform to ISO 6432 mounting standards.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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