Airtac MGC Stainless Steel Mini Cylinder MGC20X70S
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC20X70S is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 70mm stroke, M5×0.8 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 sizeM5×0.8
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MGC Stainless Steel Mini Cylinder MGC20X70S
The AirTAC MGC20X70S is a JIS-standard round-body mini cylinder, double acting, built with a variable air cushion at both stroke ends. Unlike the bumper-style MG, the cushion needles let you dial in end-of-stroke deceleration, so this 20 mm bore cylinder can run at higher speeds and carry heavier moving loads without hammering the covers. At 0.5 MPa it delivers 157 N push and 131.9 N pull, rising to 219.8 N push at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa. Applying the usual 0.6 safety factor, that push force supports a safe working load of roughly 9.5 kg on horizontal moves, or about 8 kg for vertical lifting duty.
Construction follows the JIS mini-cylinder footprint: a SUS304 stainless barrel with covers and stainless block riveted and rolled onto it, plus a hard-chrome plated 20 um carbon-steel rod and a two-way piston seal that also stores lubricant. The 70 mm stroke sits well inside the 500 mm maximum standard stroke for this bore, and the fitted magnet (the S code) allows CMSG, DMSG or EMSG switch sensing. Air supply should be filtered to 40 um, operating pressure spans 0.15 to 1.0 MPa (22 to 145 psi), proof pressure is 1.5 MPa (215 psi), temperature range is -20 to +70 C, and piston speed runs 30 to 800 mm/s. Mounting is via FA flange or LB foot, with I and Y rod knuckles available; ports are M5x0.8 and the male rod thread is M8x1.25.
Airtac MGC Stainless Steel Mini Cylinder MGC20X70S Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC20X70S |
|---|---|
| Series | MGC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 70 mm |
| Acting type | Double acting + cushion |
| Port size | M5×0.8 |
| 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 | Variable air cushion, both ends |
| 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 MGC Stainless Steel Mini Cylinder MGC20X70S
| MGC | JIS round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
| FA / LB | Mounting: FA flange, LB foot. |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MGC Stainless Steel Mini Cylinder MGC20X70S Is Used
Small parts ejection on assembly stations
The variable air cushion lets the 20 mm bore run at higher push-off speeds (up to 800 mm/s) while decelerating smoothly at stroke end, protecting light tooling from impact during high-cycle part ejection.
Product divert and stopper actuation
With 157 N push at 0.5 MPa (about 16 kgf, roughly 8 kg safe vertical load), the cushioned stroke end stops diverted cartons or product stops gently, avoiding bounce and re-shock on conveyor fixtures.
Positioned clamping with switch feedback
The fitted magnet works with CMSG, DMSG or EMSG switches so the 70 mm stroke can be confirmed extended and retracted, while the adjustable cushion prevents end-of-travel jolt on compact clamping fixtures.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC20X70S the Right Cylinder?
At 20 mm bore this is the smallest MGC in the range, so there is no smaller cushioned option to step down to; if 157 N push at 0.5 MPa is marginal, move up to the 25 mm bore (245.3 N) or the 32 mm bore (402.2 N). If your application runs slowly with light loads and does not need end-of-stroke deceleration, the plain bumper MG in the same bore is the lower-cost alternative for 20 to 40 mm. Choose the MGC when speed, load momentum or cycle smoothness matter: the variable air cushion at both ends absorbs piston energy instead of a fixed pad. The 70 mm stroke is a standard length (up to 500 mm standard for this bore, non-standard strokes to 800 mm made to order). Order FA flange or LB foot mounting, add I or Y rod knuckles if the tooling pivots, and keep the S magnet if you want CMSG, DMSG or EMSG position sensing. For long strokes, fit external guides: the 8 mm rod is not intended to take side loads.
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) & 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 and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MGC Stainless Steel Mini Cylinder MGC20X70S FAQ
At 0.5 MPa the 20 mm bore gives 157 N push and 131.9 N pull; at 0.7 MPa it reaches 219.8 N push and 184.7 N pull. The theoretical maximum is 32 kgf at 1.0 MPa. Using the common 0.6 rule of thumb on the 0.5 MPa push force, plan for about 9.5 kg safe working load horizontally, or roughly 8 kg for vertical lifting.
The cushion is an adjustable air cushion at both stroke ends: turn the needle valve to control deceleration, which suits higher speeds and heavier moving loads than the fixed bumper MG. It only decelerates the piston near end of travel; it is not a lock or brake, and the MGC20X70S will not hold position on air loss. For a held load, add an external rod lock or pilot-operated check valve.
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 MGC Stainless Steel Mini Cylinder MGC20X70S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.