Airtac MG Stainless Steel Mini Air Cylinder MG20X80
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG20X80 is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 80mm 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
- Stroke80 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed anti-impact bumper pads
About the Airtac MG Stainless Steel Mini Air Cylinder MG20X80
With a 20 mm bore and 80 mm stroke, the MG20X80 is a double acting JIS round-body mini cylinder that pushes with about 157 N and pulls with 131.9 N at 0.5 MPa, rising to 219.8 N on the extend stroke at 0.7 MPa. Its barrel is SUS304 stainless steel rolled onto the covers, paired with a hard-chrome plated 8 mm rod, so it shrugs off damp air, light washdown and outdoor exposure far better than painted-steel minis. Because it follows the JIS mini-cylinder standard, standard JIS brackets and rod knuckles drop straight on, which makes spares and redesigns painless.
In practice, plan on roughly 94 N of usable work at 0.5 MPa (about 60% of the rated push), which is enough to lift around 8 kg vertically with a 2:1 margin. The fixed anti-impact bumper pad at each stroke end softens direction changes but is not an adjustable cushion, and the cylinder holds no position if air is lost. This SKU carries no magnet, so CMSG / DMSG / EMSG switches cannot be fitted unless you order the S magnet option.
Airtac MG Stainless Steel Mini Air Cylinder MG20X80 Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG20X80 |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| 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 500 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MG Stainless Steel Mini Air Cylinder MG20X80
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
| FA / LB / CB / SDB | Mounting: FA flange, LB foot, CB clevis, SDB pivot bracket (with CB). |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, CB clevis, SDB pivot block, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MG Stainless Steel Mini Air Cylinder MG20X80 Is Used
Bench-top part ejector
A compact jig on a small assembly bench needs parts nudged off a nest every cycle; the 157 N push at 0.5 MPa clears light aluminium or plastic parts in an 80 mm throw without crowding the station.
Lab sample press
A low-force pressing or capping step on laboratory sample trays suits the roughly 94 N usable force at 0.5 MPa, and the stainless barrel tolerates frequent wipe-down between batches.
Light conveyor gating
Swinging a small gate or stop blade across a miniature conveyor line fits the 131.9 N pull stroke, with the bumper pad damping the gate seating at each end of the 80 mm travel.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG20X80 the Right Cylinder?
The 20 mm bore is the smallest in the MG range, so there is no smaller step down; if 157 N at 0.5 MPa feels marginal, step up to the 25 mm bore (MG25 series, 245.3 N push at 0.5 MPa) rather than running the MG20X80 near its limit. For higher speeds or heavier loads needing deceleration control, the cushioned MGC variant is the alternative. Remember that a plain MG drifts when the valve is centred or air drops - add an external rod lock or a pilot check valve if the load must stay put.
Mount it with LB foot, FA flange, CB clevis or SDB pivot brackets, and use I or Y rod knuckles on the M8x1.25 male rod thread. Ports are 1/8" (PT) on every MG20 bore. If position feedback is needed later, reorder with the S magnet code to enable CMSG / DMSG / EMSG switches.
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 / CB / SDB) & 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 MG Stainless Steel Mini Air Cylinder MG20X80 FAQ
At 0.5 MPa it pushes with 157 N and pulls with 131.9 N; at 0.7 MPa those figures rise to 219.8 N push and 184.7 N pull. The theoretical maximum output of the 20 mm bore is 32 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa = 22-145 psi, with a 1.5 MPa = 215 psi proof pressure.
Not as supplied - this SKU has no built-in magnet, so CMSG, DMSG or EMSG switches cannot detect the piston. Order the magnet version (the S code, e.g. MG20X80S) if you need sensing. The cylinder itself runs on air filtered to 40 um at 30-800 mm/s between -20 and +70 C.
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