Airtac MG Stainless Steel Mini Air Cylinder MG20X150S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG20X150S is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 150mm 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
- Stroke150 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 MG20X150S
With a 20 mm bore and 150 mm stroke, this MG delivers about 157 N of push and 131.9 N of pull at 0.5 MPa, rising to 219.8 N at 0.7 MPa - a double acting JIS round-body mini cylinder built around a riveted SUS304 stainless barrel with a hard-chrome plated 8 mm rod. The fitted magnet means CMSG, DMSG or EMSG switches can be clipped on for end-of-stroke detection without any rework later.
The stainless barrel shrugs off damp air, light washdown and outdoor exposure far better than painted-steel minis, and the JIS mounting footprint accepts standard mini-cylinder brackets and rod knuckles, so spares stay easy to source. At 0.5 MPa the push force translates to roughly 16 kgf, so plan on lifting about 8 kg vertically with a 2:1 margin - enough for small clamps, gates and light parts transfer.
Airtac MG Stainless Steel Mini Air Cylinder MG20X150S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG20X150S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 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 MG20X150S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | 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 MG20X150S Is Used
Small-parts presence checking
The built-in magnet and 150 mm travel let CMSG switches confirm tray or part seating on an electronics assembly bench, with 157 N of push at 0.5 MPa ample for light press-fit checks.
Carton flap tucking
On a semi-auto packaging line, the 20 mm bore swings or pushes carton flaps closed; the stainless barrel copes with daily wipe-downs in a food-adjacent packing area.
Light lift-and-lower chutes
Lifting about 8 kg vertically with a 2:1 margin, the cylinder raises small chutes or stops on a conveyor gate, the bumper pad softening each arrival at the stroke end.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG20X150S the Right Cylinder?
At 157 N push at 0.5 MPa this is the smallest MG bore, so if your load needs more, step up to the 25 mm bore (245.3 N) or the 32 mm bore (402.2 N) at the same pressure. The 150 mm stroke sits well inside the 500 mm standard range for this bore, so no made-to-order surcharge applies. Remember the fixed bumper pad only softens the stroke end - it will not hold a load if air is lost, so add a pilot check valve or external rod lock where position must be kept. Choose LB foot, FA flange or CB clevis mounting to suit the machine frame, and keep side loads off the 8 mm rod on longer travels.
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 MG20X150S FAQ
At 0.5 MPa it pushes with 157 N and pulls with 131.9 N; at 0.7 MPa those rise to 219.8 N push and 184.7 N pull. The theoretical maximum is 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, and speed runs 30-800 mm/s.
The S means a magnet is built into the piston, so CMSG, DMSG or EMSG reed switches can be mounted directly on the 20 mm barrel for position sensing. The body itself is a JIS-standard round mini cylinder with a riveted SUS304 stainless barrel, hard-chrome plated rod and fixed anti-impact bumper pads at each stroke end - not an adjustable cushion, which is the MGC variant.
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