Airtac MG Stainless Steel Mini Air Cylinder MG20X70S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG20X70S is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 70mm 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
- Stroke70 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 MG20X70S
With a 20 mm bore and a short 70 mm stroke, this MG20X70S is a double acting JIS round-body mini cylinder built around a SUS304 stainless barrel riveted onto the covers, with a hard-chrome plated 8 mm rod. At 0.5 MPa it pushes about 157 N and pulls 131.9 N; at 0.7 MPa those figures rise to 219.8 N and 184.7 N, with a theoretical ceiling of 32 kgf at 1.0 MPa. The 1/8" port keeps plumbing simple across every MG bore.
Because the S code is in the model, the piston magnet is factory-fitted, so CMSG, DMSG or EMSG switches can be clipped on for end-position sensing without reordering. In practice, plan on roughly 94 N of usable push at 0.5 MPa, which lifts about 9 kg vertically with a 2:1 margin - enough for small clamps, gates and light part transfer. The fixed anti-impact bumper pad softens the stroke ends, and the JIS mounting footprint accepts standard mini-cylinder brackets and rod knuckles for easy spares.
Airtac MG Stainless Steel Mini Air Cylinder MG20X70S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG20X70S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 70 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 MG20X70S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×70 | 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 MG20X70S Is Used
Sensor-checked slide gate
The built-in magnet and CMSG switch confirm gate open/closed on a small packaging machine, with the 70 mm stroke clearing a 60 mm part path and the bumper pad quieting each reversal.
Light-duty clamping fixture
Roughly 94 N of dependable push at 0.5 MPa clamps small aluminium housings in a drilling jig; the SUS304 barrel shrugs off coolant mist that would corrode a painted mini body.
Push-off on a food-line conveyor
Washdown-friendly stainless construction suits nudging trays off a belt; about 9 kg vertical lift capability with margin covers the tray weight, and the JIS footprint matches existing brackets.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG20X70S the Right Cylinder?
At 157 N push (0.5 MPa), the 20 mm bore sits at the bottom of the MG range; step up to the 25 mm bore (245 N) when loads feel marginal, or drop nothing since this is the smallest MG. If higher speeds or heavier loads need adjustable deceleration, the cushioned MGC is the alternative. The 70 mm stroke is well inside the 500 mm standard limit, so it is a catalogue item, not made to order.
Match the mount to the frame: LB foot, FA flange, CB clevis or SDB pivot, with I and Y knuckles on the M8x1.25 male rod thread. Note that the magnet enables sensing only - when air is lost the rod drifts freely, so add an external rod lock or pilot check valve if the position must be held. Keep side loads off the 8 mm rod on any offset tooling.
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 MG20X70S FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa, 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, on clean air filtered to 40 um, running 30-800 mm/s between -20 and +70 C.
Yes. The S in MG20X70S means the piston magnet is factory-installed, so AirTAC CMSG, DMSG or EMSG reed/electronic switches mount directly on the 20 mm barrel. A plain MG20X70 without the S cannot take these switches, so order the magnet version whenever end-position feedback is needed.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MG Stainless Steel Mini Air Cylinder MG20X70S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.