Airtac MF32-40 Stainless Steel Mini Cylinder MF40X260SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X260SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 260mm 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
- Stroke260 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 MF40X260SU
Delivering 628.3 N of push force at 0.5 MPa, the AirTAC MF40X260SU is a robust 40 mm bore double-acting mini cylinder built to JIS standards. Its SUS304 stainless steel barrel and riveted aluminium covers shrug off mild corrosion and washdown environments. Because this round-body design is physically shorter than a comparable ISO 6432 cylinder for the same 260 mm stroke, it saves valuable mounting length in tight machinery. The internal piston relies on a two-way oil-retaining seal for long service life, while fixed TPU bumper pads and a front-cover anti-impact pad absorb stroke-end shocks. This specific SKU includes a built-in magnet (-S) for position sensing and features a U-style flat-end back cover.
For practical sizing, plan for a real work rate of roughly 377 N, which is about 60 percent of the 0.5 MPa rating. Alternatively, you can expect it to lift a 32 kg payload vertically when applying a conservative 2:1 safety margin. The 1/4 inch port feeds the 16 mm piston rod to cycle at speeds between 30 and 800 mm/s. If you need adjustable end-cushioning for high-velocity loads, consider the related MFC variant instead of this fixed-bumper model.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X260SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X260SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 260 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 MF40X260SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×260 | 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 MF40X260SU Is Used
Stamping Press Feeders
Pushes heavy metal blanks into a stamping press using the full 628.3 N output, with the U flat-end back cover sitting flush against the machine frame to minimise protrusion.
Pallet Diverters
Lifts or deflects 30 kg pallets transversely across a packaging line, relying on the 260 mm stroke to clear the main conveyor belt entirely.
Vacuum Lifter Arms
Actuates a pivoting arm to lower suction cups onto large sheet materials, using the built-in -S magnet to trigger a DMSG sensor once the cups contact the surface.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X260SU the Right Cylinder?
When sizing this 40 mm bore, compare it directly against the smaller MF32, which provides 402.2 N of push force at 0.5 MPa. Since 40 mm is the largest bore available in the MF series, stepping up further requires switching to an entirely different cylinder family. The 260 mm stroke is well within the 500 mm standard limit, but at this extended length you must carefully manage side loads to prevent rod bending and premature seal wear. The included -S magnet allows seamless integration with CMSG, DMSG, or EMSG reed and electronic switches.
Remember that a standard double-acting cylinder like this cannot hold a load in place if air pressure drops or the directional valve is centred; the piston will drift. The fixed TPU bumpers only decelerate the impact near the stroke end and do not function as a mechanical brake. To suspend a load safely mid-stroke, install an external pilot-operated check valve or a dedicated rod lock mechanism.
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 MF40X260SU FAQ
This 40 mm bore cylinder features a 1/4 inch air port and a 16 mm rod with an M14x1.5 male thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, the MF does not conform to ISO 6432 standards, though its riveted SUS304 round body is intentionally shorter than an ISO 6432 cylinder for the same stroke, saving space. It uses fixed TPU bumper pads for end-deceleration rather than an adjustable air cushion. You can mount it using LB foot, FA flange, SDB pivot, or TC trunnion brackets.
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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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