Airtac MG Stainless Steel Mini Air Cylinder MG20X100S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG20X100S is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 100mm 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
- Stroke100 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 MG20X100S
With a 20 mm bore pushing about 157 N at 0.5 MPa (219.8 N at 0.7 MPa), the MG20X100S is a double acting JIS round-body mini cylinder with a 100 mm stroke and a built-in magnet for position sensing. Its SUS304 stainless barrel and hard-chrome plated 8 mm rod shrug off washdown and damp air far better than painted-steel minis, and the riveted body keeps the whole unit compact and light. A fixed anti-impact bumper pad at each stroke end softens direction changes; it decelerates only and is not an adjustable cushion.
Because the footprint follows the JIS mini-cylinder standard, the MG20X100S drops onto standard JIS brackets and I or Y rod knuckles, so spares and redesigns stay simple. As a sizing rule of thumb, plan on roughly 94 N (about 9.6 kg lifted vertically with a 2:1 margin) of real work at 0.5 MPa rather than the full 157 N rating. The fitted magnet accepts CMSG, DMSG or EMSG switches without modification.
Airtac MG Stainless Steel Mini Air Cylinder MG20X100S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG20X100S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 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 MG20X100S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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 MG20X100S Is Used
Bottle rejection gate on a filling line
The magnet plus a CMSG switch confirms gate position at each 100 mm stroke, while the stainless barrel handles repeated washdown between shifts.
Lifting small fixtures on an electronics assembly bench
About 9.6 kg vertical lift capability at 0.5 MPa with a 2:1 margin suits light jigs; the LB foot mount keeps the cylinder fixed under the bench top.
Sample pusher in a laboratory indexing unit
The 157 N push slides trays between stations at moderate speed, and the fixed bumper pads quiet the stroke ends without needing cushion adjustment.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG20X100S the Right Cylinder?
At 20 mm bore this is the smallest MG; if 157 N push at 0.5 MPa is marginal, step up to the MG25 (245.3 N) or MG32 (402.2 N). For heavier loads or higher speeds needing adjustable deceleration, move to the cushioned MGC range. Note that a plain MG drifts when air is lost or the valve centres - the bumpers only soften the stroke end - so add an external rod lock or pilot check valve if the load must stay put. The 100 mm stroke is well inside the 500 mm standard range, and the -S magnet means CMSG / DMSG / EMSG switches can be fitted from day one.
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 MG20X100S 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 is 0.15-1.0 MPa (22-145 psi) with proof pressure of 1.5 MPa (215 psi), and speed runs 30-800 mm/s.
It means a magnet is built into the piston, so CMSG, DMSG or EMSG reed/hall switches can be clipped on to signal end-of-stroke. A SKU without the S cannot take these sensors. The cylinder itself is a JIS-standard round-body unit with a SUS304 barrel, hard-chrome rod and fixed anti-impact bumper pads - not an adjustable cushion.
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