Airtac MGD Double Rod Mini Cylinder MGD20X175
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD20X175 is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø20mm bore and 175mm 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
- Stroke175 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 MGD20X175
The AirTAC MGD20X175 is a double acting, double-rod mini cylinder built to the JIS footprint, with a 20 mm bore and 175 mm stroke. 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 and the effective area is the rod-side area on both sides. That means the output force is equal in both directions: about 131.9 N each way at 0.5 MPa and 184.7 N each way at 0.7 MPa, with a theoretical maximum of 26.9 kgf at 1.0 MPa. Because the through-rod resists rotation and side load, the rod stays square to the load without external anti-rotation guidance.
Construction is a riveted round body in SUS304 stainless with hard-chrome plated rods, suited to damp and washdown environments, and a fixed anti-impact bumper pad at each stroke end that decelerates the piston without any adjustment. 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" and the thread option is PT. For a realistic working load, budget roughly 0.6 of the available force, which puts a safe vertical figure for this bore at about 8 kg. Note that the cylinder does not hold its load on air loss, so use an external rod lock or pilot check valve where a held position is required.
Airtac MGD Double Rod Mini Cylinder MGD20X175 Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD20X175 |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 175 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 MGD20X175
| MGD | JIS round-body mini cylinder (double-rod). |
|---|---|
| 20 | Bore size in mm. |
| ×175 | 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 MGD20X175 Is Used
Anti-rotation light slide
The through-rod keeps the carriage square without extra guides on small pick-and-place slides, delivering about 131.9 N in each direction at 0.5 MPa for repeatable stroke-end positioning.
Twin-point push
Drive two light fixtures, clamps or ejector pins at once, one load per rod end, with equal force both ways and the same M8x1.25 thread at each end.
Rear flag mounting point
Use the back rod end to carry a stop or switch flag; order the S version if a CMSG, DMSG or EMSG sensor is required, since this non-magnet model accepts none.
Is the Airtac MGD Double Rod Mini Cylinder MGD20X175 the Right Cylinder?
At 131.9 N per direction at 0.5 MPa, the 20 mm bore is the smallest MGD and suits light slides, twin-load pushes and flag carriers; step up to MGD25 (about 206 N) or MGD32 (about 346 N) if the load needs more, or to MGD40 (about 528 N) at the top of the range. If you need bores of 50 or 63 mm, or an adjustable variable cushion instead of the fixed bumper pad, choose the MGCD; for a conventional single-rod cylinder, choose the MG. The double rod is the right pick when you need anti-rotation behavior, equal force both ways, a rear-mounted switch or stop flag, or two driven points from one cylinder. Mounting is FA flange or LB foot, with I and Y rod knuckles available (no SDB/CB pivot on the double-rod). This model has no magnet, so no CMSG/DMSG/EMSG sensor can be fitted; order the S code if position sensing is needed. The 175 mm stroke is within the 300 mm maximum standard stroke for bore 20, and on long strokes keep side load on the rod minimal even though the through-rod tolerates it better than a single rod.
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 MGD20X175 FAQ
Force is equal in both directions because both sides of the piston see the rod-side area: 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, speed range is 30-800 mm/s, and the port is 1/8". The fixed anti-impact bumper pads decelerate the piston at each stroke end but do not lock or hold a load; on air loss the piston drifts, so use an external rod lock or pilot check valve for a held position.
The MGD has a rod exiting both covers with the same M8x1.25 male thread at each end, so the two rod ends move together, force is equal both ways, the through-rod resists rotation and side load, and the rear rod can carry a switch or stop flag or drive a second load. A single-rod MG has a larger push than pull force and no rear rod. Both are JIS round-body stainless mini cylinders with riveted covers; the MGD takes FA flange or LB foot mounting plus I and Y knuckles, and position sensing with CMSG, DMSG or EMSG sensors requires the optional magnet (S code), which this model does not carry.
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