Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X300S
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X300S is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 300mm stroke, M5×0.8 air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke300 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X300S
The MGCD20X300S is a double acting, double-rod JIS round-body mini cylinder with a 20 mm bore and a 300 mm stroke, the maximum standard stroke for this bore. Because a rod exits both covers with the same M8x1.25 male thread on each end, the piston works on the rod-side area in both directions, so the output force is equal either way: 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. A variable air cushion at both ends lets you tune the deceleration for smooth stops at higher speeds or with heavier carried loads. The fitted magnet (S code) allows CMSG, DMSG or EMSG switches to be mounted for end-position sensing.
Construction follows the JIS mini-cylinder footprint: a riveted SUS304 stainless barrel with a hard-chrome plated 8 mm rod for corrosion resistance and long seal life. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), and the temperature range is -20 to +70 C at speeds of 30-800 mm/s on air filtered to 40 um. For a realistic working load, size around 60 percent of the thrust, roughly 8 kgf horizontal; for a vertical lift, halve the 131.9 N figure to about 6 kg. Note that the cushion only decelerates the stroke ends and does not lock the rod, so use an external rod lock or pilot check valve where position must be held.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X300S Technical Specifications
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X300S |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod + cushion |
| Port size | M5×0.8 |
| 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 | Variable air cushion, both ends |
| 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 MGCD Stainless Steel Mini Air Cylinder MGCD20X300S
| MGCD | JIS round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×300 | 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 MGCD Stainless Steel Mini Air Cylinder MGCD20X300S Is Used
High-speed anti-rotation transfer
The through-rod resists rotation while the variable air cushion smooths 300 mm travel stops, moving small parts between stations at up to 800 mm/s.
Twin-load press with soft stop
Rod ends on both covers carry two light fixtures, delivering about 131.9 N each way at 0.5 MPa, with adjustable cushioning giving a gentle seating action.
Rear-switch slide
The rear rod end drives a flag past CMSG or DMSG switches while the front rod carries the load, giving sensed end positions on a 300 mm stroke.
Is the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X300S the Right Cylinder?
At 131.9 N per direction at 0.5 MPa, the 20 mm bore is the smallest in the MGCD range; step up to MGCD25 for about 206 N or MGCD32 for about 346 N if your load needs more force. Choose MGCD when you need a through-rod with equal force both ways plus adjustable cushioning; if a fixed bumper pad is enough at this bore, the MGD double-rod cylinder is the lighter option, and for a single rod with a cushion pick the MGC. The 300 mm stroke is the maximum standard stroke for bore 20. Mount with the FA flange or LB foot, and add I or Y rod knuckles on the rod ends; SDB and CB mounts are not available. This S-coded model carries a magnet for CMSG/DMSG/EMSG switches. Keep side loads low on long strokes like this one and use external guides for accurate linear transfer.
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 and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X300S FAQ
Because the double-rod design exposes the rod-side area in both directions, output is equal either way: 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 on air filtered to 40 um.
The MGCD has a variable air cushion at both ends that you adjust to decelerate the piston for smooth high-speed stops; it is not a brake and does not hold the load on air loss, so add an external rod lock or pilot check valve for holding. Unlike the MGD, which uses fixed bumper pads, the MGCD cushion is adjustable, and unlike the single-rod MGC it has a rod at both covers with equal force both ways. The fitted magnet supports CMSG/DMSG/EMSG switches.
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