
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD20X200S is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø20mm bore and 200mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
The AirTAC MGD20X200S is a JIS round-body mini cylinder, double acting and double rod: 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. Because the rod-side piston area is active on both sides, the output force is equal in both directions - about 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa. The through-rod resists rotation and side load, keeps stroke-end position repeatable, and leaves the rear rod end free to carry a stop flag or drive a second load.
Construction follows the JIS mini-cylinder footprint: a riveted SUS304 stainless barrel with a hard-chrome-plated 8 mm rod, suited to damp or washdown surroundings. A fixed anti-impact bumper pad decelerates the piston at each stroke end (this is not an adjustable cushion - that is the MGCD series). The fitted magnet (S code) allows CMSG, DMSG or EMSG switches to be clamped anywhere along the 200 mm travel. With a realistic working load of roughly 0.6 of the push force, plan on about 79 N, or around 8 kg for a vertical lift.
| Model | Airtac MGD Double Rod Mini Cylinder MGD20X200S |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 200 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.
| 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).
| MGD | JIS round-body mini cylinder (double-rod). |
|---|---|
| 20 | Bore size in mm. |
| ×200 | 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.
The through-rod keeps the tool plate from twisting on a 200 mm pick-and-place slide, with 131.9 N available in both directions so approach and return speeds stay matched.
Front and rear rod ends each carry a small pusher pad, letting one 20 mm bore transfer two lightweight cartons or trays simultaneously on a conveyor line.
The back rod end drives a stop or flag past CMSG/DMSG/EMSG switches (magnet fitted), giving repeatable end-of-stroke confirmation on an assembly fixture.
Bore 20 is the smallest MGD: at 0.5 MPa it delivers 131.9 N each way, so size up to MGD25 (206.1 N), MGD32 (345.6 N) or MGD40 (527.8 N) if your load needs more. If you need bore 50 or 63, or an adjustable variable cushion instead of the fixed bumper pad, move to the MGCD double-rod series; for a conventional single-rod cylinder, the MG series is the equivalent. The 200 mm stroke is within the 300 mm maximum standard stroke for bore 20, so no nonstandard surcharge applies. Choose LB foot or FA flange mounting, with I or Y rod knuckles at either or both rod ends (pivot mounts SDB/CB are not offered on the double-rod body). The S in this model code means the magnet is already fitted for CMSG/DMSG/EMSG position sensing. For long strokes, support the load to keep side load off the through-rod, and remember the cylinder will not hold position on air loss - add an external rod lock or pilot check valve for a held load.
Quick checklist
Because both sides of the piston see the rod-side area, output is equal both ways: 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 fluid is air filtered to 40 um. Ports are 1/8" and the rod thread is M8x1.25 at both ends.
The MGD20X200S has a rod exiting both covers with the same M8x1.25 thread at each end, so force is identical extending and retracting, rotation and side load are better resisted, and the rear rod end can carry a stop flag or a second load - the single-rod MG gives a larger push than pull and no rear rod. The bumper pad is a fixed anti-impact pad, not an adjustable cushion (that is the MGCD). The S code means the magnet is fitted, so CMSG, DMSG or EMSG switches can be mounted along the barrel.
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