Airtac MG Stainless Steel Mini Air Cylinder MG20X175S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG20X175S is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 175mm 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
- Stroke175 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 MG20X175S
With a 20 mm bore and a 175 mm stroke, this MG series cylinder is double acting, so air drives the rod out and pulls it back with no spring involved. Push force is 157 N and pull force 131.9 N at 0.5 MPa, rising to 219.8 N on the extend stroke at 0.7 MPa, with a theoretical ceiling of 32 kgf at 1.0 MPa. The barrel is SUS304 stainless steel rolled onto the covers in classic JIS round-body style, paired with a hard-chrome plated 8 mm rod, so the body shrugs off damp shop air and light washdown far better than painted minis.
In practice, plan on roughly 94 N of usable push at 0.5 MPa, which translates to lifting about 9 kg vertically once you keep a 2:1 margin. The fixed anti-impact bumper pad at each stroke end softens the direction change, and because the S code magnet is built in, CMSG, DMSG or EMSG switches can be clipped on for end-of-stroke sensing. Operating window is 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
Airtac MG Stainless Steel Mini Air Cylinder MG20X175S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG20X175S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 175 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 MG20X175S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×175 | 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 MG20X175S Is Used
Sensor-checked part ejection
The built-in magnet lets a CMSG switch confirm the 175 mm eject stroke on a small assembly station, with 157 N of push easily clearing light plastic housings from a nest.
Lab sample pusher
Stainless barrel and chrome rod cope with occasional wipe-downs in a testing lab, while the 131.9 N pull force retracts a sample tray holder between test cycles.
Carton flap tuck-down
About 9 kg of practical vertical capacity and a 175 mm reach make this a tidy fit for tucking top flaps on small cartons at the end of a packing conveyor.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG20X175S the Right Cylinder?
At 157 N push (0.5 MPa), this bore sits above the smallest MG size available (there is no MG below 20) and below the 25 mm bore's 245 N, so step up to MG25 if your load needs about 55% more force. The 175 mm stroke is well inside the 500 mm standard range for this bore, so no made-to-order lead time applies. Order the LB foot, FA flange, CB clevis or SDB pivot mount to suit your fixture, and note the magnet is already fitted for sensor use. Remember the bumpers only soften the stroke end: if the load must stay put when air drops, add an external rod lock or a pilot check valve.
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 MG20X175S FAQ
At 0.5 MPa the cylinder delivers 157 N push and 131.9 N pull; at 0.7 MPa that becomes 219.8 N push and 184.7 N pull. The theoretical maximum is 32 kgf at 1.0 MPa. Keep real working loads near 60% of the 0.5 MPa rating, roughly 94 N, and it runs on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um at 30-800 mm/s.
Yes. The S in the model code means a piston magnet is factory-fitted, so AirTAC CMSG, DMSG or EMSG reed/electronic switches mount directly on the SUS304 barrel to signal extend and retract positions. A non-S MG bore 20 cannot take these switches.
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