
The AirTAC Airtac MFCD Double Rod Cushioned Mini Cylinder MFCD20X250S is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 250mm 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.
Twin rods exiting both covers give the AirTAC MFCD20X250S equal thrust in both directions while actively resisting side-play. This JIS-standard round-body mini cylinder pairs its SUS304 stainless barrel with adjustable needle-set air cushions at each end to absorb high-speed end-of-stroke shock. With a 20 mm bore and 250 mm stroke, it delivers 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa in either travel direction.
Because the second rod steadies the payload and provides a mounting point for stoppers or a second tool, this unit excels in anti-rotation tasks. The riveted aluminium construction is shorter than an ISO 6432 cylinder of the same size, saving valuable machine space. For position feedback, the -S suffix indicates a built-in piston magnet ready for CMSG, DMSG, or EMSG sensors. The 1/8" air port keeps flow compact for this bore size.
| Model | Airtac MFCD Double Rod Cushioned Mini Cylinder MFCD20X250S |
|---|---|
| Series | MFCD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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.
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 132 N |
| 0.7 MPa | 185 N |
| Max (@1.0 MPa) | 27 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
| MFCD | JIS-standard round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×250 | 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.
Shuttles parts between two stations using dual tooling mounted on both rod ends, relying on the 131.9 N force and anti-rotation stability at 800 mm/s.
Acts as an adjustable end-stop for moving pallets where the variable air cushion quietly absorbs the 250 mm stroke impact without rebound.
Raises and lowers light 6 kg workholding fixtures with equal force both ways, maintaining precise vertical guidance over the long 250 mm travel.
When choosing between this 20 mm bore and the MFCD25, consider your exact thrust requirements. The MFCD20X250S provides 131.9 N at 0.5 MPa, yielding a safe working load of roughly 79 N or a 6.7 kg vertical lift with a 2:1 margin. If your application exceeds this, step up to the MFCD25 which outputs 206.1 N at 0.5 MPa. Both options feature variable air cushions for smooth deceleration.
For mounting, you can use LB foot, FA flange, or TC trunnion brackets (there is no SDB option because a rod exits the back cover). Remember that the air cushion only decelerates the piston near the stroke end; it does not function as a brake. If you need to hold a vertical load during air loss, add an external rod lock or pilot check valve.
Quick checklist
It generates 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa, with a theoretical maximum of 26.9 kgf at 1.0 MPa. Because it is a double-rod cylinder, this force is identical in both directions. The air port size is 1/8".
No, the piston will drift if air is lost. The variable air cushions at both ends only decelerate the piston near the end of its 250 mm stroke to reduce shock; they do not act as a lock or brake. Use an external rod lock or pilot check valve for load holding.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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