Airtac MFD Double Rod Miniature Cylinder MFD20X225S
The AirTAC Airtac MFD Double Rod Miniature Cylinder MFD20X225S is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø20mm bore and 225mm 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.
- BoreØ20 mm
- Stroke225 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM8×1.25
- 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 MFD20X225S
Twin rods exiting both covers define this AirTAC MFD20X225S, ensuring output force is perfectly balanced at 131.9 N in either direction at 0.5 MPa. Built as a JIS-standard round-body mini cylinder with a SUS304 stainless barrel and riveted aluminium covers, it yields a shorter mounting envelope than an ISO 6432 unit of identical bore and stroke.
The extended 225 mm stroke is well within the 300 mm standard limit, and the built-in magnet (-S) supports CMSG, DMSG or EMSG switches for end-of-stroke sensing. With a 1/8" port and M8x1.25 male rod threads, the dual shafts resist rotation and provide a stable mounting point for a secondary tool or stopper on the back side.
Operating at 30-800 mm/s on fixed TPU bumper pads, it handles a safe working load of roughly 79 N. Note that these bumpers only decelerate the stroke end; for vertical loads, add an external rod lock or pilot check valve, as the piston will drift on air loss.
Airtac MFD Double Rod Miniature Cylinder MFD20X225S Technical Specifications
| Model | Airtac MFD Double Rod Miniature Cylinder MFD20X225S |
|---|---|
| Series | MFD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 225 mm |
| Acting type | Double acting, double rod |
| 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 | 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 (Ø20mm)
| 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).
Model Code: Airtac MFD Double Rod Miniature Cylinder MFD20X225S
| MFD | JIS-standard round-body mini cylinder (double-rod). |
|---|---|
| 20 | 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 MFD20X225S Is Used
Anti-Rotation Transfer Slide
Uses the twin rods to move a 225 mm stroke jig without twisting, leveraging the 131.9 N bidirectional force to push and pull parts evenly.
Twin-Tool Actuator
Mounts a primary gripper on the front rod and a secondary stopper flag on the back rod, using the equal force both ways to cycle a 79 N payload.
Sensored Ejector Station
Relies on the -S magnet with DMSG switches to confirm ejection at 225 mm, while the SUS304 barrel withstands mild washdown in a packaging line.
Is the Airtac MFD Double Rod Miniature Cylinder MFD20X225S the Right Cylinder?
Choose the MFD20 bore when you need 131.9 N of force both ways at 0.5 MPa, or step up to the MFD25 which provides 206.1 N if your payload exceeds the 20 mm class. Because this is a double-rod build, the twin shafts inherently resist side-play and rotation, making it ideal for guided slides over this 225 mm travel.
The -S magnet on this unit allows solid-state or reed sensors to track position, while mounting options include LB foot, FA flange, or TC trunnion (SDB and back-cover codes are unavailable since a rod exits both ends). Remember that fixed TPU bumpers only cushion end-of-stroke impacts; they do not lock the load.
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 MFD20X225S FAQ
The MFD20X225S provides equal force in both directions due to the double-rod design: 131.9 N at 0.5 MPa, 184.7 N at 0.7 MPa, and a theoretical maximum of 26.9 kgf at 1.0 MPa. It features a 1/8" port and operates at pressures from 0.15 to 1.0 MPa.
The twin rods resist rotation, stabilize side loads, and provide equal force both ways. The -S suffix means this cylinder has a built-in magnet for CMSG, DMSG, or EMSG switches. It uses fixed TPU bumper pads for end-of-stroke deceleration, not an adjustable air cushion.
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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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