Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400CA
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400CA is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke400 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 MF40X400CA
Generating 628.3 N of push force at 0.5 MPa, this 40 mm bore double-acting cylinder handles heavy automation tasks. The riveted rolling-packed structure joins an SUS304 stainless steel barrel to aluminium covers, resisting mild corrosion and washdown. Its heterogeneous two-way piston seal retains an oil film for long service life. A 1/4" port supplies air, and the 400 mm stroke falls within the 500 mm standard limit.
Because the JIS-standard round body is physically shorter than an ISO 6432 cylinder of the same bore and stroke, it saves valuable mounting length. Fixed TPU bumper pads and a front-cover anti-impact pad soften stroke-end impact without adjustable cushioning. For real work at 0.5 MPa, plan for about 377 N of usable load, which translates to lifting roughly 32 kg vertically with a 2:1 safety margin.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400CA Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400CA |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 MF40X400CA
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | 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 MF40X400CA Is Used
Injection Mold Platen Ejection
Uses the 628.3 N push at 0.5 MPa to knock finished plastic parts from a mold, while the CA pivot absorbs slight misalignment over the 400 mm travel.
Pallet Diverter Gate
Swings heavy transfer pallets off a main conveyor line, taking advantage of the SUS304 stainless barrel to withstand occasional washdowns.
Vertical Carton Stacking
Lifts packaged goods weighing up to 32 kg, relying on the compact JIS body to fit within tight vertical elevator frames.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400CA the Right Cylinder?
This 40 mm bore provides the maximum thrust in the MF family, stepping up from the MF32 which yields 402.2 N at 0.5 MPa. If your fixture requires less force, dropping to the 32 mm bore saves space and air. Since this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG position switches; you must select an -S variant for sensing. The CA back cover supplies a rear pivot mount, which pairs well with TC trunnion or SDB pivot blocks for angular alignment.
At 400 mm of travel, avoid side loads that could bend the 16 mm rod. Note that a plain double-acting cylinder drifts when air is lost or the valve is centred; the TPU pads only decelerate the stroke end and do not act as a brake. To suspend a load safely, install an external rod lock or a pilot-operated check valve.
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 MF40X400CA FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. Air is supplied through a 1/4" port.
No, this SKU lacks the internal magnet so it cannot accept CMSG, DMSG, or EMSG switches. You must specify an MF40 model with the -S suffix for magnetic sensing. The CA back cover provides a pivot mount, and the body is shorter than a comparable ISO 6432 cylinder.
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