Airtac MG Stainless Steel Mini Air Cylinder MG20X225
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG20X225 is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 225mm 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
- Stroke225 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 MG20X225
With a 20 mm bore and a 225 mm stroke, this MG series cylinder is a double acting JIS round-body mini cylinder: air drives the rod out and pulls it back, so no spring is involved in the return. Push force is about 157 N at 0.5 MPa (219.8 N at 0.7 MPa), which suits light clamping, sorting and small part transfer on compact machinery. The barrel is SUS304 stainless steel and the 8 mm rod is hard-chrome plated, so the body shrugs off damp air, light washdown and outdoor exposure far better than painted-steel minis.
For sizing, a practical rule is to plan on roughly 94 N of real work at 0.5 MPa (about 60 percent of the push rating); in vertical lifting terms that means this bore comfortably lifts about 8 kg with margin, since its raw 157 N push equals roughly 16 kgf. The fixed anti-impact bumper pad at each stroke end softens direction changes, and the riveted round body keeps the whole unit short and light. Note that the bumpers only decelerate the piston: if air is lost the rod will drift, so use an external rod lock or a pilot check valve where a load must stay put. This SKU carries no magnet, so CMSG / DMSG / EMSG switches cannot be fitted unless you order the S option.
Airtac MG Stainless Steel Mini Air Cylinder MG20X225 Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG20X225 |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 225 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 MG20X225
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×225 | 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 MG20X225 Is Used
Lab sample pusher
The 157 N push at 0.5 MPa slides sample racks or tray lids along a short benchtop track, and the stainless barrel tolerates frequent wipe-down between runs.
Small-part reject kicker
A 225 mm reach flicks undersized bottles or caps off a packaging conveyor; the bumper pads quiet the kick at both ends of the stroke.
Light lift-and-lower station
With about 8 kg of safe vertical lift capacity at 0.5 MPa, the cylinder raises small fixtures or chutes; add a check valve if the load must hold on air loss.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG20X225 the Right Cylinder?
At 20 mm this is the smallest bore in the MG range, so there is nothing to step down to; if 157 N of push at 0.5 MPa feels marginal, move up to the 25 mm bore (245.3 N) or the 32 mm bore (402.2 N). The 225 mm stroke sits well inside the 500 mm standard range for this bore, so no made-to-order lead time applies. Keep side loads off the 8 mm rod at this length: guide the workpiece externally if the tooling overhangs. Mount with LB foot, FA flange, CB clevis or SDB pivot brackets, and pair with I or Y rod knuckles. If your cycle needs position feedback, reorder as MG20X225S to enable the sensor magnet.
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 MG20X225 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 range is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, on air filtered to 40 um, at -20 to +70 C and 30-800 mm/s.
Not as ordered: MG20X225 has no built-in magnet, so CMSG, DMSG or EMSG switches cannot detect the piston. Order the S option (for example MG20X225S) to get the magnet, and the switches can then be strapped to the SUS304 barrel. The 1/8" port and JIS mounting footprint stay unchanged.
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