Airtac MGD Double Rod Mini Cylinder MGD20X25S
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD20X25S is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 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 MGD20X25S
The AirTAC MGD20X25S 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 travel together. Because the rod-side area is active on both sides of the piston, 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. The 20 mm bore is the smallest in the MGD range, with a 1/8" port and a maximum standard stroke of 300 mm.
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. A SUS304 stainless barrel with hard-chrome rods suits damp and washdown areas, and a fixed anti-impact bumper pad softens each stroke end. The fitted magnet (the S code) accepts CMSG, DMSG or EMSG switches, and the cylinder runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), -20 to +70 C, at 30-800 mm/s. As a working rule, keep the vertical load near 8 kg, which is about 0.6 of the 13.4 kgf push force.
Airtac MGD Double Rod Mini Cylinder MGD20X25S Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD20X25S |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 MGD20X25S
| MGD | JIS round-body mini cylinder (double-rod). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MGD20X25S Is Used
Anti-rotation pick slide
The through-rod keeps a small gripper or vacuum plate from twisting on a 25 mm transfer stroke, with equal 131.9 N force for approach and return at 0.5 MPa.
Twin-point push
Drive two light chutes or part stops from one cylinder: the front rod pushes one side while the back rod end pushes the other, both at 184.7 N at 0.7 MPa.
Rear-mounted switch flag
Use the back rod end to carry a stop or cam flag past the CMSG/DMSG/EMSG switches enabled by the fitted magnet, confirming stroke-end position on repeat cycles.
Is the Airtac MGD Double Rod Mini Cylinder MGD20X25S the Right Cylinder?
At 131.9 N per direction at 0.5 MPa, the MGD20X25S is the lightest force class in the MGD double-rod range; step up to the MGD25 for about 206 N or the MGD32 for about 346 N at the same pressure. The 25 mm stroke is standard, and bore 20 accepts standard strokes up to 300 mm. Choose this model when you need anti-rotation guidance, a rear stop or switch flag, or a second driven point on the back rod end; if you need an adjustable cushion instead of the fixed bumper pad, look at the MGCD, and for a single-rod cylinder the MG. Mount with the FA flange or LB foot and add I or Y rod knuckles; SDB/CB pivots are not available on the double-rod body. For long strokes, support the side load externally since the through-rod guides but does not carry heavy overhang. Order the -S suffix (fitted here) to use CMSG/DMSG/EMSG switches; non-S SKUs carry no sensor. Note the cylinder does not hold position on air loss, so add an external rod lock or pilot check valve 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 MGD20X25S FAQ
The double-rod design gives equal force 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), the fluid is air filtered to 40 um, temperature range is -20 to +70 C, and speed is 30-800 mm/s. The port is 1/8" and the rod thread is M8x1.25 at both ends.
The MGD20X25S has a rod exiting both covers with the same M8x1.25 thread, so force is equal both ways, rotation and side load are resisted, and the rear rod end can carry a stop flag or drive a second load. The single-rod MG has a larger push than pull and no rear rod. This S-suffix model is magnet fitted, so CMSG, DMSG or EMSG switches mount directly; the fixed bumper pad only softens the stroke ends and is not an adjustable cushion like the MGCD.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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