Airtac MF32-40 Stainless Steel Mini Cylinder MF32X400SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X400SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 400mm 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.
- BoreØ32 mm
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM10×1.25
- 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 MF32X400SU
Delivering 402.2 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles substantial work within a compact footprint. For the same 32 mm bore and 400 mm stroke, the riveted SUS304 stainless steel barrel and aluminium covers create a body noticeably shorter than an ISO 6432 unit, saving valuable mounting length. The piston relies on a heterogeneous two-way seal that retains an oil film for extended lifespan, while fixed TPU bumper pads and a front-cover anti-impact pad absorb stroke-end shocks.
Equipped with a 1/4" port and an M10x1.25 male rod thread, the unit operates smoothly between 30-800 mm/s. Because it carries the -S magnet, you can directly mount CMSG, DMSG, or EMSG electronic switches for position sensing. Plan for roughly 241 N of actual work at 0.5 MPa, which translates to safely lifting about 20.5 kg vertically with a 2:1 margin. The flat-end U back cover further streamlines the rear profile for tight machinery integration.
Airtac MF32-40 Stainless Steel Mini Cylinder MF32X400SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF32X400SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M10×1.25 |
| 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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 MF32X400SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×400 | 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 MF32X400SU Is Used
Carton Diverting
Pushes corrugated cartons across a packaging line using 402.2 N of thrust, with the 400 mm stroke clearing wide transfer belts.
Vertical Parts Lift
Raises lightweight industrial trays weighing up to 20.5 kg between conveyor tiers, taking advantage of the compact JIS body length.
Clamp Actuation
Extends a secondary workholding clamp on a CNC machining centre, using the U flat-end cover to sit flush against the machine frame.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF32X400SU the Right Cylinder?
When sizing this 32 mm bore, evaluate your force margins carefully: stepping down to the MF25 yields 245.3 N at 0.5 MPa, whereas the larger MF40 provides 628.3 N. This model hits a strong middle ground for 400 mm travel. Note that a standard cylinder drifts if air pressure drops or the valve is centred; the bumpers only decelerate the end of travel rather than locking the rod. To suspend a load safely, integrate an external rod lock or a pilot-operated check valve.
The 400 mm stroke demands attention to side loading. Ensure your front mounting—whether LB foot, FA flange, or TC trunnion—keeps the rod perfectly aligned to prevent premature seal wear and rod bending. The included -S magnet ensures compatibility with CMSG, DMSG, and EMSG sensors for precise end-of-stroke detection.
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 MF32X400SU FAQ
This 32 mm bore cylinder features a 1/4" port and an M10x1.25 male rod thread. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, increasing to 563 N push and 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
The SUS304 stainless barrel with riveted aluminium covers is shorter than an ISO 6432 cylinder for the same stroke. The -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG switches. Fixed TPU bumper pads decelerate the stroke end, but they do not act as an adjustable air cushion.
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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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