Airtac MFCD Double Rod Cushioned Mini Cylinder MFCD25X40S
The AirTAC Airtac MFCD Double Rod Cushioned Mini Cylinder MFCD25X40S is a genuine double acting, double rod + cushion 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 + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MFCD Double Rod Cushioned Mini Cylinder MFCD25X40S
Twin rods and a needle-set air cushion at each end define the AirTAC MFCD25X40S, a JIS-standard round-body mini cylinder built for smooth, anti-rotation motion at high speed. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown, while the double-rod design outputs equal force in both directions—206.1 N at 0.5 MPa and 288.5 N at 0.7 MPa. Because a rod exits both covers, there is no back-cover code and no SDB mount. This 25 mm bore version uses a 1/8" port and M10x1.25 male rod threads.
For the same bore and stroke, this riveted body is shorter than an ISO 6432 cylinder, saving valuable mounting length without conforming to that standard. The built-in magnet (-S suffix) supports CMSG, DMSG, and EMSG switches for position sensing. Based on the 0.5 MPa rating, the safe working load is roughly 124 N, translating to a vertical lift of about 10.5 kg with a 2:1 margin. The cushion only decelerates the piston near stroke end; it does not lock or hold the load on air loss.
Airtac MFCD Double Rod Cushioned Mini Cylinder MFCD25X40S Technical Specifications
| Model | Airtac MFCD Double Rod Cushioned Mini Cylinder MFCD25X40S |
|---|---|
| Series | MFCD JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod + cushion |
| 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 | Variable air cushion, both ends |
| 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 MFCD Double Rod Cushioned Mini Cylinder MFCD25X40S
| MFCD | JIS-standard round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 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 MFCD Double Rod Cushioned Mini Cylinder MFCD25X40S Is Used
Twin-Tool Transfer
Grips and shifts parts horizontally at high speed, using the twin rods to prevent rotation while moving a 10.5 kg payload with a 2:1 safety margin.
Cushioned Press Down
Lowers a spotting or marking tool with equal 206.1 N force, relying on the adjustable needle cushion to absorb the impact at the 40 mm stroke end.
Symmetric Clamping
Clamps a workpiece from both sides simultaneously, using the 1/8" port to maintain steady pressure and the -S magnet to confirm closure.
Is the Airtac MFCD Double Rod Cushioned Mini Cylinder MFCD25X40S the Right Cylinder?
Choose this 25 mm bore when you need more push and pull than the MFCD20 (131.9 N at 0.5 MPa) but less bulk than the MFCD32 (345.6 N at 0.5 MPa). The double-rod layout is ideal for high-speed twin-tool stations where equal force both ways and anti-rotation stability are critical. The variable air cushion at both ends soaks up end-of-stroke shock across the 30-800 mm/s speed range.
Select LB foot, FA flange, or TC trunnion mounts to fit your frame. Because this MFCD25X40S includes the -S magnet, you can directly mount CMSG, DMSG, or EMSG sensors. Remember that a plain cylinder drifts on air loss—the cushion decelerates but never locks the load, so add an external rod lock or pilot check valve if you need strict position 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 MFCD Double Rod Cushioned Mini Cylinder MFCD25X40S FAQ
Force is equal both ways due to the double-rod design: 206.1 N at 0.5 MPa, 288.5 N at 0.7 MPa, and a theoretical max of 42 kgf at 1.0 MPa. It features a 25 mm bore, 1/8" port, and M10x1.25 male rod threads.
No, the variable air cushion only decelerates the piston near stroke end to reduce shock; it is not a brake or lock, so the cylinder drifts on air loss. This model includes the -S magnet, allowing you to mount CMSG, DMSG, or EMSG sensors for position detection.
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