Airtac MF32-40 Stainless Steel Mini Cylinder MF40X15U
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X15U is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 15mm 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
- Stroke15 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 MF40X15U
Generating 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder is built for compact, high-thrust actuation. The SUS304 stainless-steel barrel and riveted aluminium covers resist mild corrosion and washdown environments, while the piston's two-way seal retains an oil film for extended mechanical life. Equipped with a U flat-end back cover, it uses a 1/4" port and an M14x1.5 male rod thread.
For practical sizing, plan for roughly 377 N of real work at 0.5 MPa, which safely lifts about 32 kg vertically with a 2:1 margin. The fixed TPU bumper pads and front-cover anti-impact pad soften stroke-end impact by decelerating the motion, though they do not provide adjustable cushioning. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG position switches.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X15U Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X15U |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 MF40X15U
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 MF40X15U Is Used
Short-Stroke Stamping
Ideal for pressing small bearings or rivets in automated assembly lines where the 15 mm stroke and 628.3 N output deliver rapid, localized force.
Heavy Part Diverter
Pushes dense metal or plastic components off a conveyor belt using the 40 mm bore's high push force, fitting neatly into tight transfer stations.
Pallet Clamping
Secures heavy pallets or fixtures during machining or wrapping operations, utilizing the robust M14x1.5 rod thread to maintain a firm grip.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X15U the Right Cylinder?
When sizing this 40 mm bore actuator, compare it directly against the smaller MF32, which yields 402.2 N of push at 0.5 MPa. If your fixture requires less force, dropping to the 32 mm option saves mounting space, but the 40 mm bore is the largest available in the MF series, making it the definitive choice for maximum thrust within this JIS-standard family. The 15 mm stroke keeps the retracted length exceptionally tight, which is ideal for short clamping motions.
Keep in mind that a standard double-acting cylinder will drift if air pressure drops or the directional valve is centred, as the bumpers only soften the end of travel and act as neither a brake nor a lock. To secure a suspended load, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 MF40X15U FAQ
This 40 mm bore cylinder uses a 1/4" port and an M14x1.5 male rod thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum force of 128.1 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You would need the -S variant for sensing. Additionally, its JIS-standard round body is shorter than an ISO 6432 cylinder for the same bore and stroke, and it relies on fixed TPU bumper pads rather than an adjustable air cushion.
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