Airtac MF32-40 Stainless Steel Mini Cylinder MF40X90SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X90SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 90mm 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
- Stroke90 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 MF40X90SU
Delivering 628.3 N of push force at 0.5 MPa, the AirTAC MF40X90SU is a robust 40 mm bore double-acting round-body mini cylinder. Because this JIS-standard unit features a riveted rolling-packed structure rather than bulky tie-rods, its overall body is physically shorter than a comparable ISO 6432 cylinder, saving valuable mounting length in tight machinery. The SUS304 stainless steel barrel paired with aluminium covers resists mild corrosion and washdown environments, while the piston's two-way seal retains an oil film for extended mechanical life.
This specific SKU includes a built-in piston magnet (indicated by the 'S') for direct mounting of CMSG, DMSG, or EMSG reed and electronic sensors. It also carries a 'U' flat-end rear cover for straightforward face-mounting. Rather than an adjustable air cushion, fixed TPU bumper pads and a front-cover anti-impact pad absorb the shock at the stroke extremes. For practical sizing, plan for about 377 N of actual work at 0.5 MPa, which equates to safely lifting a 32 kg part vertically with a 2:1 safety margin.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X90SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X90SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 90 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 MF40X90SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 MF40X90SU Is Used
Board Edge Trimming
Drives a high-force cutting blade on a woodworking line, utilising the 879.6 N push force at 0.7 MPa to cleanly shear panel edges.
Pallet Platen Press
Pushes a heated platen down onto a palletised load, relying on the flat-end U rear cover for stable mounting and the 628.3 N output at 0.5 MPa.
Heavy Package Divert
Actuates a heavy-duty routing gate on a logistics conveyor, where the built-in magnet enables DMSG sensors to confirm gate position.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X90SU the Right Cylinder?
When sizing this 40 mm bore, compare its 628.3 N push force at 0.5 MPa against the smaller MF32, which yields 402.2 N under the same pressure. If the MF32 is insufficient for your payload, the MF40X90SU is the largest standard bore in the MF family, offering a theoretical maximum of 128.1 kgf at 1.0 MPa. The 1/4" port matches the 40 mm bore requirement for adequate airflow to maintain speeds between 30-800 mm/s.
Remember that a standard double-acting cylinder will drift if air pressure drops or the directional valve is centred; the TPU bumpers only soften the end-of-stroke impact and do not function as a braking lock. To suspend a load safely mid-stroke, integrate an external pilot-operated check valve or a dedicated rod lock. The 90 mm stroke is well within standard limits, but always ensure the load is guided to prevent rod bending under side-loading.
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 MF40X90SU FAQ
The 40 mm bore features a 1/4" port and a M14x1.5 male rod thread. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push is 879.6 N and the pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
The body uses a SUS304 stainless barrel with riveted aluminium covers, making it shorter than an ISO 6432 cylinder for the same 40x90 dimensions. The 'S' in the model code means it has a built-in magnet for CMSG, DMSG, or EMSG switches. Stroke-end deceleration is handled by fixed TPU bumper pads, not an adjustable air cushion.
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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.
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Most inquiries answered within 7-8 hours.
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