Airtac MG Stainless Steel Mini Air Cylinder MG20X800S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG20X800S is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 800mm 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
- Stroke800 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 MG20X800S
With a slim 20 mm bore and a long 800 mm reach, this MG model is a double acting JIS round-body mini cylinder built on a SUS304 stainless barrel riveted to its covers, with a hard-chrome plated 8 mm rod. Because the barrel is stainless rather than painted steel, it shrugs off washdown mist, condensation and outdoor damp that swell or rust conventional aluminium minis. The 800 mm stroke sits beyond the 500 mm standard limit for this bore, so it is a made-to-order length.
At 0.5 MPa the bore delivers about 157 N of push and 131.9 N of pull, rising to 219.8 N at 0.7 MPa, with a theoretical ceiling of 32 kgf at 1.0 MPa. In practice, budget roughly 94 N of real work at 0.5 MPa, which means it lifts about 8 kg vertically with a 2:1 margin, enough for light gates, sensors carriages and small parts. The fixed anti-impact bumper pads soften the stroke ends; they decelerate only and are not an adjustable cushion. The built-in magnet accepts CMSG, DMSG or EMSG switches for end-position signalling.
Airtac MG Stainless Steel Mini Air Cylinder MG20X800S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG20X800S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 800 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 MG20X800S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×800 | 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 MG20X800S Is Used
Long-reach reject pusher
The 800 mm stroke sweeps a 2 to 5 kg rejected carton or blister tray off a packaging conveyor in one motion, with the magnet and a CMSG switch confirming full extension.
Light gate or lid lift
About 8 kg of vertical lift at a 2:1 margin raises a small inspection gate or machine guard lid on a bottling line, with bumper pads easing the top-of-stroke stop.
Sample probe in damp labs
The SUS304 stainless barrel tolerates humidity and splash in a washdown-prone food or laboratory station, extending a sampling probe 800 mm into a test position.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG20X800S the Right Cylinder?
This is the lightest MG bore, so check neighbours before committing: the 25 mm size pushes about 245 N at 0.5 MPa and the 32 mm about 402 N, while there is no smaller MG below 20 mm. If your load needs more than roughly 90 N of usable force, step up a bore. The 800 mm stroke is non-standard and made to order, and at this length keep side loads off the 8 mm rod and guide the load externally to avoid rod bending. Mount with LB foot, FA flange, CB clevis or SDB pivot, and remember the cylinder drifts when air is lost, so add a pilot check valve or external lock for held loads.
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 MG20X800S FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa it pushes 219.8 N and pulls 184.7 N. The theoretical maximum 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, and speed runs 30-800 mm/s.
Standard MG bore-20 strokes stop at 500 mm, so 800 mm is a made-to-order length. The S in the model code means a magnet is built in, so CMSG, DMSG or EMSG reed switches can be clamped on the barrel for end-of-stroke detection.
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