Airtac MGC Stainless Steel Mini Cylinder MGC20X50
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC20X50 is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 50mm 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
- Stroke50 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 MGC20X50
The AirTAC MGC20X50 is a JIS-standard round-body mini cylinder, double acting, with a variable air cushion at both stroke ends. The 20 mm bore delivers 157 N push and 131.9 N pull at 0.5 MPa (219.8 N / 184.7 N at 0.7 MPa), with a theoretical maximum of 32 kgf at 1.0 MPa. The cushion needle is adjustable, so you can dial in smooth deceleration near end of travel - a real advantage over the fixed bumper MG when running at higher piston speeds or moving heavier loads that would otherwise hammer the covers.
Construction follows the MG family recipe: 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. It is a compact riveted round body, not a tie-rod or extruded-profile design. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed range 30-800 mm/s, and temperature -20 to +70 C on air filtered to 40 um. As a computed buyer insight, the 157 N push at 0.5 MPa equals about 16 kgf, so a safe working load of roughly 9.6 kg (about 0.6 of push force) is a sensible rule of thumb for sizing. Note this model carries no magnet; add the S code if you later want CMSG / DMSG / EMSG switch position feedback.
Airtac MGC Stainless Steel Mini Cylinder MGC20X50 Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC20X50 |
|---|---|
| Series | MGC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 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 MGC20X50
| MGC | JIS round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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 MGC20X50 Is Used
High-cycle small-part ejection
The variable air cushion lets this 20 mm bore run at the upper end of its 30-800 mm/s range on a short 50 mm stroke, decelerating the piston smoothly instead of hammering the covers at each eject.
Compact clamping fixture
With 157 N push at 0.5 MPa (about 16 kgf, sized for roughly 9.6 kg safe working load), the MGC20X50 suits light clamping and positioning where adjustable end-of-stroke damping protects delicate workpieces.
Sorting gate on a packaging line
Double acting push and pull (157 N / 131.9 N at 0.5 MPa) gives positive motion in both directions for diverting small packages, with the cushion absorbing the stop at each stroke end.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC20X50 the Right Cylinder?
At 20 mm bore this is the smallest MGC - there is no smaller cushioned option in the family, so step up to the 25 mm bore (245.3 N push at 0.5 MPa) if 157 N is marginal. If you do not need end-of-stroke deceleration, the plain bumper MG in the same 20 mm bore is the no-cushion alternative. Choose the MGC20X50 when a compact 50 mm stroke must handle higher speeds or heavier moving loads without cover hammer, and size the circuit from the real 0.5 MPa push figure of 157 N rather than the theoretical maximum. Mounting is FA flange or LB foot, with I and Y rod knuckles available on the rod; the port is M5x0.8 and the male rod thread is M8x1.25. If you need position sensing, order the -S magnet variant, since sensors cannot be fitted without it. For strokes beyond 500 mm (the maximum standard stroke for this bore, and non-standard strokes go to 800 mm made to order), expect more piston self-weight and watch side loads on the 8 mm rod - use guides or knuckles to keep the rod loading pure.
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 MGC20X50 FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa push is 219.8 N and pull 184.7 N. The theoretical maximum is 32 kgf at 1.0 MPa. A practical rule of thumb is to work at about 0.6 of the 0.5 MPa push force, so plan for roughly 9.6 kg safe working load, and halve that again for vertical lifting.
The cushion is adjustable: a needle at each stroke end meters exhaust air to decelerate the piston smoothly, which the fixed bumper pad on the plain MG cannot do. It only slows the piston near end of travel - it is not a lock, brake or position holder, and the cylinder will not hold position on air loss. For a held load, add an external rod lock or pilot-operated check valve. The SUS304 stainless barrel and hard-chrome rod suit washdown-prone areas, and mounting is FA flange or LB foot.
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