Airtac MFD Double Rod Miniature Cylinder MFD40X225
The AirTAC Airtac MFD Double Rod Miniature Cylinder MFD40X225 is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø40mm bore and 225mm 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
- Stroke225 mm
- Port size1/4"
- Acting typeDouble acting, double rod
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MFD Double Rod Miniature Cylinder MFD40X225
Twin rods exiting both covers give the AirTAC MFD40X225 equal output force in both directions, rated at 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa. As a JIS-standard round-body mini cylinder with a SUS304 stainless barrel and riveted aluminium covers, it occupies a shorter mounting length than a comparable ISO 6432 unit while resisting mild washdown corrosion.
The 40 mm bore uses a 1/4" port and M14x1.5 male rod threads. Because this specific SKU lacks the -S magnet option, it cannot accept CMSG, DMSG, or EMSG sensors. For sizing, this 225 mm stroke yields a safe working load of roughly 317 N, or about 26.9 kg of vertical lift with a 2:1 margin.
Airtac MFD Double Rod Miniature Cylinder MFD40X225 Technical Specifications
| Model | Airtac MFD Double Rod Miniature Cylinder MFD40X225 |
|---|---|
| Series | MFD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 mm |
| Acting type | Double acting, double rod |
| 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 300 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac MFD Double Rod Miniature Cylinder MFD40X225
| MFD | JIS-standard round-body mini cylinder (double-rod). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 MFD Double Rod Miniature Cylinder MFD40X225 Is Used
Twin-Tool Transfer
Drive two synced grippers from the 225 mm stroke, using the equal 527.8 N force both ways to push and pull parts without retracing tool paths.
Anti-Rotation Slides
The dual 16 mm rods resist side-play and twisting under offset loads, keeping heavier machining fixtures steady across the long travel.
Vertical Lowering Arms
Leverage the 738.9 N at 0.7 MPa to lower 26.9 kg workheads smoothly, using the back rod to trip a mechanical stopper at mid-stroke.
Is the Airtac MFD Double Rod Miniature Cylinder MFD40X225 the Right Cylinder?
When choosing between this 40 mm bore and the smaller MFD32 (345.6 N at 0.5 MPa), the MFD40X225 provides substantially higher thrust for heavier slides. The double-rod design is ideal when you need strict anti-rotation resistance or want to mount a secondary tool on the back rod.
Note that this non-magnet SKU cannot host position sensors. Also, the fixed TPU bumper pads only decelerate the stroke end; they do not brake or hold the load on air loss, so add an external rod lock or pilot check valve if you need vertical holding.
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 MFD Double Rod Miniature Cylinder MFD40X225 FAQ
It delivers equal thrust both ways: 527.8 N at 0.5 MPa, 738.9 N at 0.7 MPa, and a theoretical max of 107.6 kgf at 1.0 MPa. The 40 mm bore features a 1/4" air port and M14x1.5 male rod threads.
No, this specific SKU does not include the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You would need the -S variant to enable magnetic sensing.
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