Airtac MGD Double Rod Mini Cylinder MGD20X25
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD20X25 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 MGD20X25
The AirTAC MGD20X25 is a double acting, double-rod JIS round-body mini cylinder with a 20 mm bore and 25 mm stroke. A rod exits both covers with the same M8x1.25 male thread at each end, so 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. Because both chambers see the rod-side area, output is equal in both directions: about 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. For a realistic vertical lift, apply the usual 0.6 factor: roughly 8 kg safe working load.
Construction follows the JIS mini-cylinder footprint: a SUS304 stainless barrel with hard-chrome-plated rods, riveted covers and a two-way lubricant-storing piston seal, suited to damp and washdown-adjacent environments. A fixed anti-impact bumper pad softens each stroke end, though it is not an adjustable cushion and will not hold or brake a load. 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. Ports are 1/8" and thread is PT. This model carries no magnet, so no CMSG/DMSG/EMSG sensor can be mounted; specify the S code if position sensing is needed.
Airtac MGD Double Rod Mini Cylinder MGD20X25 Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD20X25 |
|---|---|
| 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 MGD20X25
| 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 MGD20X25 Is Used
Anti-rotation slide
The through-rod keeps a small gripper or alignment fixture from twisting during the 25 mm stroke, with 131.9 N available in each direction at 0.5 MPa.
Twin-load push
Front and rear M8x1.25 rod ends drive two light pusher arms simultaneously from one 20 mm bore, delivering equal 131.9 N force both ways.
Rear-mounted stop flag
Use the back rod end to carry a mechanical stop or flag block on short-stroke transfer stations; add the S code magnet for CMSG/DMSG/EMSG sensing.
Is the Airtac MGD Double Rod Mini Cylinder MGD20X25 the Right Cylinder?
At 20 mm bore this is the smallest MGD, delivering 131.9 N each way at 0.5 MPa; step up to the MGD25 for about 206 N or the MGD32 for about 346 N if your load needs more. The MGD40 tops the range at about 528 N. If you need bores of 50 or 63 mm, or an adjustable variable cushion instead of the fixed bumper pad, move to the MGCD; for a conventional single-rod cylinder choose the MG. Pick the MGD20X25 when you need anti-rotation guidance, equal force in both directions, or a rear rod end for a switch flag or a second load. Mount with LB foot or FA flange and add I or Y rod knuckles as needed; SDB and CB pivots are not available on the double-rod series. The 25 mm stroke is well inside the 300 mm maximum standard stroke for this bore, but keep side load low on longer strokes.
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 MGD20X25 FAQ
Output is equal in both directions because the rod-side area works 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 air must be filtered to 40 um. Ports are 1/8" on every MGD bore.
The MGD20X25 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 resisted, and the rear end can carry a flag or a second load. The single-rod MG has a larger push than pull. This model has no magnet, so no sensor can be mounted; order the S code to enable CMSG, DMSG or EMSG switches. Note the cylinder does not hold its load on air loss, so use an external rod lock or pilot check valve for held loads.
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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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