Airtac MGD Double Rod Mini Cylinder MGD20X350S
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD20X350S is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø20mm bore and 350mm 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
- Stroke350 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 MGD20X350S
The AirTAC MGD20X350S is a double acting, double rod JIS mini cylinder with a 20 mm bore and a 350 mm stroke. A piston rod exits both the front and back covers with the same M8x1.25 male thread at each end, so the two rod ends move together and the output force is equal in both directions: about 131.9 N each way 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 both chambers see the rod-side area, there is no separate push and pull figure, and the through-rod resists rotation and side load while keeping stroke-end position repeatable.
The 350 mm stroke is a non-standard, made-to-order length for this bore (the standard range tops out at 300 mm), and the long through-rod benefits from the fixed anti-impact bumper pads that decelerate the piston at each end of travel. The SUS304 stainless barrel and hard-chrome plated rod suit damp and washdown environments, the 1/8" port takes PT thread, and the fitted magnet allows CMSG, DMSG or EMSG switches to be mounted anywhere along the barrel. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, and speed spans 30-800 mm/s. As a practical sizing rule, keep the working load to about 0.6 of the push force, which is roughly 8 kg for a vertical lift on this cylinder.
Airtac MGD Double Rod Mini Cylinder MGD20X350S Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD20X350S |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 350 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 MGD20X350S
| MGD | JIS round-body mini cylinder (double-rod). |
|---|---|
| 20 | Bore size in mm. |
| ×350 | 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 MGD20X350S Is Used
Anti-rotation light slide
The through-rod keeps a small carrier from twisting over the 350 mm travel, moving jigs or fixtures between two repeatable end positions without a separate guide.
Twin-load push
Both rod ends deliver the same 131.9 N at 0.5 MPa, so one cylinder can eject or transfer two parts at once on a light packaging or assembly line.
Rear-mounted stop flag
The back rod end carries a stopper or switch flag, and the fitted magnet plus CMSG, DMSG or EMSG sensors confirm stroke-end position on this long 350 mm stroke.
Is the Airtac MGD Double Rod Mini Cylinder MGD20X350S the Right Cylinder?
At 131.9 N per direction at 0.5 MPa, the 20 mm bore is the smallest MGD size, so choose it for light loads up to roughly 8 kg vertically or 13 kg horizontally with a 0.6 safety factor. If you need more force, step up to the 25 mm bore (206.1 N) or the 32 mm bore (345.6 N); for 50 mm or 63 mm bores, or if you need an adjustable cushion instead of a fixed bumper pad, the MGCD double-rod series is the right family, and the single-rod MG suits applications that do not need a through-rod. The double rod makes this model a natural pick where anti-rotation matters, where a rear stop or switch flag rides on the back rod end, or where one cylinder must drive two loads. Mount with the LB foot or FA flange and add I or Y rod knuckles at the ends; SDB and CB pivot mounts are not offered on the double-rod design. The fitted magnet accepts CMSG, DMSG or EMSG switches for end-of-stroke signalling. On a 350 mm stroke, keep side load on the rod low and guide the load externally, and remember the cylinder will drift on air loss, so use a pilot check valve or external rod lock for a held load.
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 MGD20X350S FAQ
Because a rod occupies the piston area on both sides, the force 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 is 1.5 MPa (215 psi), temperature range is -20 to +70 C, speed is 30-800 mm/s, and the air supply should be filtered to 40 um. Every MGD bore uses a 1/8" port, here with PT thread.
The MGD has a rod exiting both covers with the same M8x1.25 thread at each end, so it resists rotation and side load, gives equal force both ways, and lets the rear rod carry a stop or flag; the single-rod MG has a larger push than pull and no rear rod. This model also has a fitted magnet, so CMSG, DMSG or EMSG switches can be clamped anywhere on the barrel. Note the bumper pads only soften the stroke ends; the cylinder does not hold its load on air loss, so add an external rod lock or pilot check valve for held loads.
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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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