
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD25X50 is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø25mm bore and 50mm 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 MGD25X50 is a double acting, double rod JIS mini cylinder with a 25 mm bore and 50 mm stroke. A 10 mm rod exits both the front and back covers with the same M10x1.25 male thread at each end, so the through-rod resists rotation and side load, lets the rear rod end carry a stop flag or drive a second load, and keeps stroke-end position repeatable. Because both sides of the piston see the rod-side area, 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.
Construction follows the JIS round-body format: a SUS304 stainless barrel with riveted covers and a hard-chrome plated carbon steel rod, suited to damp and washdown environments. A fixed anti-impact bumper pad decelerates the piston at each stroke end, though it is not an adjustable cushion and will not hold or brake a load. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, air filtered to 40 um, a temperature range of -20 to +70 C, and speeds of 30-800 mm/s. Ports are 1/8". As a rule of thumb, plan the working load at roughly 60% of the push force, so about 12.6 kgf, or a vertical load of about 10 kg for this bore.
| Model | Airtac MGD Double Rod Mini Cylinder MGD25X50 |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 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. |
| ×50 | 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 on the MGD25X50 resists rotation and side load, keeping a 50 mm slide square through the stroke with equal 206.1 N force in both directions at 0.5 MPa.
With an M10x1.25 rod thread at both ends, one cylinder drives two small fixtures or ejector pins at once, delivering about 21 kgf per side at 0.5 MPa.
The back rod end carries a stop or flag plate for downstream counting or interlocking; order the -S version to fit CMSG, DMSG or EMSG switches.
At 206.1 N per direction at 0.5 MPa, the MGD25X50 sits in the middle of the MGD range: bore 20 is the smallest, while bore 32 and bore 40 give 345.6 N and 527.8 N respectively at the same pressure. Choose the MGD when you need a through-rod for anti-rotation guidance, symmetric transfer, or a rear-mounted switch or stop flag; choose the single-rod MG if you only need one rod end and a higher push force. If your stroke exceeds the 300 mm maximum standard stroke for this bore, or you need an adjustable cushion or a 50/63 mm bore, move to the MGCD series. 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 design. This unit has no magnet, so position sensing with CMSG, DMSG or EMSG switches requires ordering the -S version. For long strokes, support the rod or guide the load externally to limit side loading.
Quick checklist
Output is equal in both directions because the rod-side area works both ways: 206.1 N at 0.5 MPa, 288.5 N at 0.7 MPa, and a theoretical maximum of 42 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, temperature -20 to +70 C, speed 30-800 mm/s, air filtered to 40 um, and a 1/8" port on this 25 mm bore.
The MGD25X50 has a rod exiting both covers with the same M10x1.25 thread at each end, so force is identical extending and retracting and the rod resists rotation; the single-rod MG has a larger push than pull. This unit has no magnet, so no sensor can be mounted; order the -S code to enable CMSG, DMSG or EMSG switches. Note the fixed bumper pad only softens stroke ends, so use an external rod lock or pilot check valve to hold a load on air loss.
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