Airtac MGD Double Rod Mini Cylinder MGD20X225S
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD20X225S 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 MGD20X225S
The MGD20X225S is a JIS-standard round-body mini cylinder, double acting, with a through double 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 the output force is equal either way: about 131.9 N (13.4 kgf) 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 8 mm rod carries an M8x1.25 male thread at both ends, and the 225 mm stroke sits within the 300 mm maximum standard stroke for this bore.
The through-rod resists rotation and side load, keeps stroke-end position repeatable, and leaves the rear rod end free to carry a stop or switch flag or to 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 rod suit damp and washdown environments, the magnet fitted by the S code accepts CMSG, DMSG or EMSG switches, and the 1/8" port takes PT thread. For a realistic vertical load, apply the usual 0.6 rule of thumb to the push force: roughly 8 kg.
Airtac MGD Double Rod Mini Cylinder MGD20X225S Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD20X225S |
|---|---|
| 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 MGD20X225S
| 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 MGD20X225S Is Used
Anti-rotation pick slide
The through 8 mm rod keeps a small gripper or transfer slide from rotating over the 225 mm stroke, with 131.9 N available in each direction for symmetric approach and return.
Twin-point push
Drive two light parts or chutes at once from the same cylinder: the front and rear M8x1.25 rod ends move together with equal 131.9 N force at 0.5 MPa on each side.
Rear flag position sensing
Mount a stop or switch flag on the back rod end and read position with a CMSG, DMSG or EMSG sensor, since the S-coded magnet is already fitted to this 225 mm stroke unit.
Is the Airtac MGD Double Rod Mini Cylinder MGD20X225S the Right Cylinder?
At 131.9 N per direction at 0.5 MPa, the MGD20X225S is the smallest force class in the MGD double-rod range; step up to bore 25 (206.1 N) or bore 32 (345.6 N) if your load needs more. Choose the MGD over the single-rod MG when you need anti-rotation guidance, equal force both ways, a rear-mounted flag, or two driven points on one cylinder. If your bore is 50 or 63, or you need an adjustable variable cushion instead of the fixed bumper pad, move to the MGCD. Mounting is FA flange or LB foot, with I and Y rod knuckles available; there is no SDB or CB pivot option on the double-rod body. The S in this model means the magnet is already fitted, so CMSG, DMSG or EMSG switches can be ordered alongside. At 225 mm stroke the slender 8 mm rod is long relative to its diameter, so support side loads externally rather than cantilevering them off the rod end.
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 MGD20X225S FAQ
Because the rod-side area is effective in both directions, output is equal either way: 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 is 1.5 MPa (215 psi), temperature range is -20 to +70 C, speed is 30-800 mm/s, and the fluid is air filtered to 40 um. The port is 1/8" and the maximum standard stroke for bore 20 is 300 mm.
The MGD20X225S has a rod exiting both covers with the same M8x1.25 thread at each end, so force is equal in both directions and the through-rod resists rotation, while the single-rod MG has a larger extend force than retract force and only one working rod end. The fixed bumper pad here softens the stroke end but is not an adjustable cushion like the MGCD offers, and it does not lock anything: on air loss the piston drifts, so use an external rod lock or pilot check valve for a held load. The fitted magnet lets you add CMSG, DMSG or EMSG switches.
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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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