Airtac MGD Double Rod Mini Cylinder MGD20X225
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD20X225 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 with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke225 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM8×1.25
- CushionFixed anti-impact 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 MGD Double Rod Mini Cylinder MGD20X225
The AirTAC MGD20X225 is a JIS-standard round-body mini cylinder, double acting, with a through-rod that exits both the front and back covers. Because a rod occupies the piston area on each side, the effective area is the rod-side area in both directions, so output is equal either way: about 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. The 20 mm bore drives an 8 mm rod with an M8x1.25 male thread at both ends, and every MGD bore uses a 1/8" port. This 225 mm stroke sits comfortably inside the 300 mm maximum standard stroke for bore 20.
The double-rod layout resists rotation and side load, keeps stroke-end position repeatable, and leaves the back rod end free to carry a stop flag or drive a second load. A fixed anti-impact bumper pad decelerates the piston at each stroke end, though it is not an adjustable cushion and will not hold a load on air loss. The SUS304 stainless barrel and hard-chrome-plated rods suit damp and washdown-adjacent environments, and the riveted round-body construction follows the JIS mini-cylinder footprint. Operating range is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, -20 to +70 C, and speeds of 30-800 mm/s on air filtered to 40 um. For a realistic vertical figure, halve the thrust: roughly 6.7 kg is a safe working load.
Airtac MGD Double Rod Mini Cylinder MGD20X225 Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD20X225 |
|---|---|
| Series | MGD 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 anti-impact bumper pads |
| Max standard stroke | Up to 300 mm |
Specifications follow the official AirTAC MG-series (JIS standard) datasheet. Barrel: SUS304 stainless steel (round-body, riveted construction); piston rod: carbon steel with 20µm hard-chrome plating. 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 MGD Double Rod Mini Cylinder MGD20X225
| MGD | JIS 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. |
| FA / LB | Mounting: FA flange, LB foot. |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MGD Double Rod Mini Cylinder MGD20X225 Is Used
Anti-rotation transfer slide
The through-rod keeps the carriage from rotating on a 225 mm transfer stroke, moving small fixtures or trays with repeatable stroke-end position at 131.9 N each way.
Twin-load push-pull station
Front and rear M8x1.25 rod ends drive two light clamps or ejectors simultaneously, with equal 184.7 N at 0.7 MPa available in both directions.
Rear flag for stroke signalling
The back rod end carries a stop or flag plate that trips a machine limit, giving position feedback on a line where the cylinder itself runs unswitched.
Is the Airtac MGD Double Rod Mini Cylinder MGD20X225 the Right Cylinder?
At 131.9 N per direction at 0.5 MPa, the MGD20X225 is the smallest force class in the MGD range; step up to bore 25 (206.1 N) or bore 32 (345.6 N) if your load needs more push. The 225 mm stroke is a standard size, and bore 20 accepts up to 300 mm standard. Choose the MGD when you need anti-rotation, equal force both ways, or a rear rod end for a switch flag or second load; for a single-rod cylinder pick the MG, and for bores 50/63 or adjustable cushioning go to the MGCD. Mounting is FA flange or LB foot, with I and Y rod knuckles available (no SDB/CB pivot on the double rod). This unit has no magnet, so position sensing with CMSG/DMSG/EMSG switches requires the -S option at order time. On long strokes like 225 mm, check side load and consider external guidance, and remember the cylinder will drift on air loss, so use a pilot check valve or external lock for held loads.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting (LB / FA) & knuckle
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 On first run, back off the cushion/impact settings and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MGD Double Rod Mini Cylinder MGD20X225 FAQ
Output is equal in both directions: 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. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-800 mm/s, and the air must be filtered to 40 um. The port is 1/8" and the rod thread is M8x1.25 at both ends.
The MGD has a rod exiting both covers, so force is identical extending and retracting, rotation and side load are better resisted, and the rear rod end can carry a flag or a second load; the MG has one rod and a larger extending thrust. This MGD20X225 has no magnet, so CMSG, DMSG or EMSG switches cannot be mounted unless you order the -S magnet option. Note the bumper pad only softens stroke ends; it is not an adjustable cushion like the MGCD, and the cylinder will not hold a load on air loss.
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