Airtac MFD Double Rod Miniature Cylinder MFD20X50S
The AirTAC Airtac MFD Double Rod Miniature Cylinder MFD20X50S is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø20mm bore and 50mm 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
- Stroke50 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 MFD20X50S
Twin rods exiting both covers define the AirTAC MFD20X50S, delivering equal thrust in both directions via the rod-side area. This JIS-standard round-body mini cylinder uses a SUS304 stainless barrel with riveted aluminium covers, offering a shorter mounting length than an ISO 6432 unit of the same bore and stroke. The built-in piston magnet (-S) directly supports CMSG, DMSG, and EMSG reed or electronic switches.
Generating 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa, the fixed 1/8" port and M8x1.25 male rod thread provide a steady 30-800 mm/s operating speed. The fixed TPU bumper pads decelerate the stroke ends without acting as a lock. For practical sizing, the safe working load is roughly 79 N, which translates to lifting about 6.7 kg vertically with a 2:1 margin.
Airtac MFD Double Rod Miniature Cylinder MFD20X50S Technical Specifications
| Model | Airtac MFD Double Rod Miniature Cylinder MFD20X50S |
|---|---|
| Series | MFD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 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 MFD20X50S
| MFD | JIS-standard round-body mini cylinder (double-rod). |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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 MFD20X50S Is Used
Twin-Tool Transfer
Clamps a part on the forward stroke while the back rod triggers a limit flag, using the 131.9 N output to shift small components without rotational play.
Anti-Rotation Slide
Uses the dual 8 mm rods to resist twisting forces on a 50 mm stroke, keeping a light pick-and-place head perfectly steady through the travel.
Dual-End Sensing
Leverages the -S magnet for CMSG or DMSG switches at both covers, confirming end-of-stroke position for an automated assembly jig.
Is the Airtac MFD Double Rod Miniature Cylinder MFD20X50S the Right Cylinder?
When choosing between the two available bores, the MFD20X50S provides 131.9 N at 0.5 MPa, while stepping up to the MFD25 yields 206.1 N. Select this 20 mm bore for lighter twin-tool actuation where equal force and anti-rotation are required. The second rod steadies the load and cuts side-play versus a single-rod mini, and the rear rod offers a ready mount for stoppers or a second tool.
Because a rod exits both ends, there is no back-cover code and no SDB mount; use LB foot, FA flange, or TC trunnion brackets. The -S suffix ensures sensor readiness, whereas a SKU without S cannot take a switch. Remember that the piston drifts on air loss, so install an external rod lock or pilot check valve if you need to hold a suspended 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 MFD20X50S FAQ
It delivers equal force both ways: 131.9 N at 0.5 MPa, 184.7 N at 0.7 MPa, and a theoretical max of 26.9 kgf at 1.0 MPa. The air port is 1/8".
No, the piston will drift on air loss; the fixed TPU bumpers only decelerate the stroke end and do not act as a brake. Use an external rod lock or pilot check valve for load 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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