
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD25X500 is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø25mm bore and 500mm 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 MGD25X500 is a JIS-standard round-body mini cylinder, double acting and double rod: a 10 mm hard-chrome rod exits both the front and back covers with the same M10x1.25 male thread at each end. Because the rod-side piston area is active on both sides, the output force is equal in both directions, about 206.1 N at 0.5 MPa and 288.5 N at 0.7 MPa, with a theoretical maximum of 42 kgf at 1.0 MPa. The through-rod resists rotation and side load, keeps stroke-end position repeatable, and lets the rear rod end carry a stop flag or drive a second load while the front end does the work.
The 500 mm stroke is a non-standard, made-to-order length (the maximum standard stroke for a bore 25 MGD is 300 mm), so plan lead time accordingly. Construction is a riveted SUS304 stainless barrel with hard-chrome carbon-steel rods, a fixed anti-impact bumper pad at each stroke end, and a two-way lubricant-storing piston seal. Operating range is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, air filtered to 40 um, -20 to +70 C, and 30-800 mm/s. This unit has no magnet, so no position sensor can be fitted; order the S code to enable CMSG, DMSG or EMSG switches. Ports are 1/8" on every MGD bore.
| Model | Airtac MGD Double Rod Mini Cylinder MGD25X500 |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 500 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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). |
|---|---|
| 25 | Bore size in mm. |
| ×500 | 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 a 10-12 kg workpiece carrier from twisting on a 500 mm transfer stroke, with 206.1 N available in both directions for symmetric push-pull motion.
Drive two light fixtures or clamps at once, one off each M10x1.25 rod end, with equal 206.1 N force per side at 0.5 MPa and no single-rod bending moment.
Use the back rod end to carry a stop or trip flag on a long 500 mm stroke; add the S code magnet and a CMSG or DMSG switch for end-of-stroke signalling.
At bore 25 the MGD25X500 delivers 206.1 N each way at 0.5 MPa; size up to the MGD32 (345.6 N) or MGD40 (527.8 N) if your load needs more, or down to the MGD20 (131.9 N) for lighter duty. A practical working load is about 60% of the force, roughly 12 kg horizontal, or about 10 kg vertical (206.1 N / 9.81 is about 21 kgf, halved). Choose this double-rod model when you need anti-rotation guidance, equal force in both directions, or a rear rod end for a second load or stop flag; for a single rod pick the MG, and for bore 50/63 or an adjustable cushion pick the MGCD. The 500 mm stroke exceeds the 300 mm standard maximum for bore 25, so it is a made-to-order item; on long strokes keep side load low and support the rod. Mount with FA flange or LB foot (no SDB/CB on the double rod), add I or Y knuckles, and order the S code if you need CMSG/DMSG/EMSG sensing. Note the cylinder does not hold position on air loss; use an external rod lock or pilot check valve for a held load.
Quick checklist
Force is equal in both directions: 206.1 N at 0.5 MPa and 288.5 N at 0.7 MPa, with a theoretical maximum of 42 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. Ports are 1/8" and the rod thread is M10x1.25 at both ends.
The MGD25X500 has a rod exiting both covers, so force is identical extending and retracting, the through-rod resists rotation and side load, and the rear end can carry a stop flag or a second load; the single-rod MG has a larger extend force but no rear rod. This unit has no magnet, so no sensor can be mounted; order the S version to use CMSG, DMSG or EMSG switches. The fixed bumper pads only soften the stroke ends and are not an adjustable cushion, and the cylinder will not hold a load on air loss.
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