Airtac MGC Stainless Steel Mini Cylinder MGC20X225S
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC20X225S is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 225mm 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
- Stroke225 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 MGC20X225S
The MGC20X225S is a double acting, JIS-standard round-body mini cylinder with a 20 mm bore and 225 mm stroke, fitted with a variable air cushion at both ends. Unlike a fixed bumper pad, this adjustable cushion lets you tune the needle valves so the piston decelerates smoothly near each end of travel, which means you can run faster piston speeds (up to 800 mm/s) or move heavier loads without hammering the covers. At 0.5 MPa this bore 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. A practical rule of thumb: keep the working load to about 0.6 of the push force, so roughly 9.6 kgf (about 94 N) for a comfortable safety margin, or around 4.8 kg for a vertical lift.
Construction follows the proven MG family recipe: a SUS304 stainless-steel barrel with covers and stainless block riveted and rolled into place, plus a hard-chrome plated (20 um) carbon-steel rod and a two-way piston seal that also stores lubricant. The 8 mm rod carries an M8x1.25 male thread and the air ports are M5x0.8. Because the S code is fitted, a magnetic piston works with CMSG, DMSG or EMSG switches for position feedback. Mounting is via FA flange or LB foot, with I and Y rod knuckles available, and the 225 mm stroke sits comfortably inside the 500 mm standard range for this bore.
Airtac MGC Stainless Steel Mini Cylinder MGC20X225S Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC20X225S |
|---|---|
| Series | MGC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 225 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 MGC20X225S
| MGC | JIS round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×225 | 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 MGC20X225S Is Used
High-speed ejector on small assembly stations
At 30-800 mm/s with a 157 N push at 0.5 MPa, the adjustable air cushion lets this 20 mm bore kick parts off a fixture quickly yet still settle gently at end of stroke instead of hammering the covers.
Light diverting and stopping on conveyor lines
The 225 mm stroke gives useful reach for pushing small cartons or blisters off a belt, and the variable cushion decelerates the moving load smoothly even at higher cycle speeds.
Position-monitored test and clamping fixtures
With the fitted magnet accepting CMSG, DMSG or EMSG switches, the cylinder confirms extend and retract positions, while the cushion protects delicate fixture tooling from end-of-stroke shock.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC20X225S the Right Cylinder?
At 20 mm bore this is the smallest MGC available, so there is no smaller cushioned option in the family; if 157 N of push at 0.5 MPa is not enough, step up to the 25 mm bore (245.3 N) or larger. If you do not need end-of-stroke deceleration, the plain bumper-type MG covers the same 20 mm bore without the cushion. Choose the MGC when your cycle runs fast or carries a moving load that would slam the covers of a bumper-only cylinder: the variable air cushion absorbs that energy and is adjustable to the application. Mount with the FA flange or LB foot and add I or Y rod knuckles where the tooling needs a pivot. The fitted magnet means CMSG, DMSG or EMSG switches can be clipped on for end-of-stroke or mid-stroke sensing. With a 225 mm stroke on an 8 mm rod, watch for side loads: at this slenderness, guide the load externally rather than letting the rod take lateral force, and remember the cushion only decelerates the stroke end, it is not a brake, so use a pilot check valve or external rod lock if the load must be held on air loss.
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 MGC20X225S FAQ
At 0.5 MPa it pushes with 157 N and pulls with 131.9 N; at 0.7 MPa that rises to 219.8 N push and 184.7 N pull, with a theoretical maximum of 32 kgf at 1.0 MPa. A good rule of thumb is to size the working load at about 0.6 of the push force, roughly 94 N (about 9.6 kgf), and for a vertical lift halve it again to about 4.8 kg.
The needle valves at each end throttle the exhaust air so the piston decelerates smoothly over the last part of travel; you adjust the cushion to suit your speed and load. It only decelerates the stroke end, it is not a lock or brake, so the MGC20X225S will not hold position if air pressure is lost. For a held load, add a pilot check valve or an external rod lock. The SUS304 stainless barrel and hard-chrome rod keep the body corrosion resistant, and mounting is FA flange or LB foot with optional I and Y rod knuckles.
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