Airtac MG Stainless Steel Mini Air Cylinder MG20X290
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG20X290 is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 290mm 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
- Stroke290 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 MG20X290
With a 290 mm stroke on a 20 mm bore, the MG20X290 covers long-reach points in tight frames where a compact round body matters. It is a double acting JIS-standard mini cylinder: air extends and retracts the 8 mm hard-chrome-plated rod, and the SUS304 stainless barrel is riveted onto the covers, so the body shrugs off damp washdown corners that chew up painted-steel minis. Ports are 1/8" and the male rod thread is M8x1.25.
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa that rises to 219.8 N push and 184.7 N pull, with a theoretical ceiling of 32 kgf at 1.0 MPa. In practice, plan on roughly 94 N of real work at 0.5 MPa, which is about 9 kg of vertical lift with a sensible margin. Fixed anti-impact bumper pads soften the stroke ends, and operating pressure spans 0.15-1.0 MPa = 22-145 psi at speeds of 30-800 mm/s.
Airtac MG Stainless Steel Mini Air Cylinder MG20X290 Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG20X290 |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 290 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 MG20X290
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×290 | 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 MG20X290 Is Used
Carton flap tuck on a packing line
The 290 mm reach swings tall flap panels over at the sealing station, with the 157 N push at 0.5 MPa ample for light corrugated board.
Sample pusher in a lab autosampler
Stainless barrel and hard-chrome rod tolerate the washdown and reagent splashes around analytical benches, while the long stroke slots trays into place.
Reject kicker on a food conveyor
A side-mounted MG20X290 nudges off-spec packs off the belt; the fixed bumper pad keeps the direction change quiet at 30-800 mm/s.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG20X290 the Right Cylinder?
At 157 N push (0.5 MPa) this bore suits light clamping, ejecting and small part transfer; step down is not possible within MG (20 mm is the smallest), and the next step up is the 25 mm bore at 245.3 N push under the same pressure. If your cycle needs adjustable end-of-stroke deceleration rather than the fixed bumper pad, look at the cushioned MGC variant instead. The 290 mm stroke is well inside the 500 mm standard range for this bore, but a long thin 8 mm rod dislikes side loads, so guide the load externally where the work is not purely axial. Mount it on LB feet, an FA flange, a CB clevis or an SDB pivot, and add I or Y rod knuckles as needed. Note the SKU carries no magnet, so CMSG / DMSG / EMSG switches cannot be fitted; order the -S version if position sensing is planned. Also remember that when air is removed the piston is free to drift, so hang the load on a pilot check valve or an external rod lock if it must stay put.
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 MG20X290 FAQ
At 0.5 MPa the cylinder delivers 157 N push and 131.9 N pull; at 0.7 MPa, 219.8 N push and 184.7 N pull. The theoretical maximum is 32 kgf at 1.0 MPa. Working pressure is 0.15-1.0 MPa = 22-145 psi (proof 1.5 MPa = 215 psi), speed 30-800 mm/s, port 1/8", rod 8 mm with M8x1.25 male thread, stroke 290 mm.
No sensor on this SKU: the MG20X290 has no built-in magnet, and CMSG / DMSG / EMSG switches only work on the -S magnet version. The fixed anti-impact bumper pads merely soften the stroke ends; they are not a brake, so an unsupported load will drift if air is lost. Use an external rod lock or pilot check valve where holding is required.
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