Airtac MFD Double Rod Miniature Cylinder MFD25X40
The AirTAC Airtac MFD Double Rod Miniature Cylinder MFD25X40 is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø25mm bore and 40mm stroke, 1/8" 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.
- BoreØ25 mm
- Stroke40 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- 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 MFD Double Rod Miniature Cylinder MFD25X40
Twin rods exiting both covers define the AirTAC MFD25X40, yielding identical thrust in extend and retract directions using the rod-side area. This JIS-standard round-body mini cylinder features a SUS304 stainless barrel and riveted aluminium covers, delivering 206.1 N at 0.5 MPa and 288.5 N at 0.7 MPa through its 1/8 inch port.
The dual-rod geometry steadies the payload and resists torsional side-play better than a single-rod build. For a 2:1 safety margin, it handles a vertical lift of about 10.5 kg each way. This riveted stainless body is shorter than an ISO 6432 cylinder for the same stroke, saving mounting length. Note this SKU lacks a magnet, so it cannot take a sensor.
Airtac MFD Double Rod Miniature Cylinder MFD25X40 Technical Specifications
| Model | Airtac MFD Double Rod Miniature Cylinder MFD25X40 |
|---|---|
| Series | MFD JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| 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 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 (Ø25mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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 MFD25X40
| MFD | JIS-standard round-body mini cylinder (double-rod). |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 MFD25X40 Is Used
Twin-Tool Transfer
Drives a dual-pick mechanism where the back rod mounts a secondary stopper, utilising the 206.1 N bidirectional force to shift parts horizontally.
Anti-Rotation Lift
Raises a light machining fixture without twisting, relying on the parallel rods to keep the platform steady through the 40 mm travel.
Symmetrical Clamp
Holds a workpiece from two sides simultaneously, applying equal 288.5 N clamping pressure at 0.7 MPa during both extend and retract actions.
Is the Airtac MFD Double Rod Miniature Cylinder MFD25X40 the Right Cylinder?
When sizing between the two available bores, the MFD20 provides 131.9 N at 0.5 MPa, while this MFD25 offers 206.1 N at 0.5 MPa. Choose the larger bore when moving heavier jigs or overcoming friction on twin-tool slides. The fixed TPU bumper pads decelerate the stroke ends but do not lock the piston; if air pressure drops, the load drifts. Use an external rod lock or pilot check valve for fail-safe holding.
Mounting options include LB foot, FA flange, and TC trunnion brackets. Because a rod exits the back cover, there is no SDB mount. To add CMSG, DMSG, or EMSG switches for position sensing, you must select the -S magnet variant, as this base model cannot accept a sensor.
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 MFD25X40 FAQ
The MFD25X40 delivers equal force in both directions: 206.1 N at 0.5 MPa, 288.5 N at 0.7 MPa, and a theoretical maximum of 42 kgf at 1.0 MPa. It uses a 1/8 inch air port and operates at speeds between 30 and 800 mm/s.
No, this base SKU lacks a magnet and cannot accept CMSG or DMSG switches; you need the -S variant for sensing. Additionally, the fixed TPU bumpers only decelerate the stroke end—they do not lock the piston. The load will drift on air loss, so use an external rod lock for holding.
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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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