Airtac MF32-40 Stainless Steel Mini Cylinder MF40X500SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X500SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 500mm 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
- Stroke500 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 MF40X500SU
Delivering 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder tackles heavy-duty linear motion across a 500 mm stroke. Because the SUS304 stainless barrel and riveted aluminium covers form a shorter overall body than an equivalent ISO 6432 unit, you reclaim valuable mounting length in tight machine envelopes. The internal piston relies on a two-way oil-retaining seal to sustain lubrication, while fixed TPU bumper pads soften end-of-travel impacts without offering adjustable cushioning.
Equipped with a built-in magnet for position sensing, this -S variant supports CMSG, DMSG, and EMSG switches. 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. The 1/4" port and M14x1.5 male rod thread handle the necessary air volume for the 40 mm bore, and the U flat-end back cover simplifies direct rear mounting.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X500SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X500SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 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 MF40X500SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 MF40X500SU Is Used
Pallet Diverting Gate
Uses the 628.3 N push force at 0.5 MPa to reliably deflect heavy timber pallets onto a secondary packaging line over the 500 mm travel.
Press Tool Ejection
Extracts stamped metal brackets from deep press dies, relying on the U flat-end back cover for rigid rear plate mounting.
Vertical Carton Flap Folder
Deploys the 500 mm stroke to fold tall corrugated carton flaps, safely lifting parts under 32 kg with a 2:1 vertical margin.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X500SU the Right Cylinder?
When sizing this 40 mm bore, compare its 628.3 N push at 0.5 MPa against the smaller MF32, which yields 402.2 N under the same pressure. Since 40 mm is the largest available MF bore, moving beyond this capacity requires an entirely different cylinder family. If your mechanism must maintain vertical position during an air loss or valve centre state, note that this standard cylinder will drift; the fixed bumpers only decelerate the stroke end rather than locking the rod, so an external pilot check valve or rod lock is required for holding.
The 500 mm stroke maximises the standard range for this series, meaning side-load and rod-bending forces are amplified. Ensure your front mounting uses a floating joint to prevent binding, and leverage the -S magnet with CMSG or EMSG sensors for end-of-stroke confirmation. The U flat-end back cover allows rigid rear plate mounting, while FA flanges or TC trunnions can accommodate different load distributions.
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 MF40X500SU FAQ
The 40 mm bore provides a push force of 628.3 N and a pull force of 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. It features a 1/4" air port and a 16 mm piston rod with an M14x1.5 male thread.
No, the piston will drift if air is lost or the valve is centred. The fixed TPU bumper pads only decelerate the rod near the stroke end and do not act as a brake. For vertical load holding, you must install an external rod lock or a pilot-operated check valve. The built-in -S magnet allows CMSG, DMSG, or EMSG sensors to track position.
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Covers non-human-caused product damage.
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