Airtac MGC Stainless Steel Mini Cylinder MGC20X25
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC20X25 is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 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 MGC20X25
The AirTAC MGC20X25 is a double acting, JIS-standard round-body mini cylinder with a 20 mm bore and 25 mm stroke, fitted with a variable air cushion at both ends. Unlike the bumper-type MG, the cushion needles let you dial in smooth deceleration near each end of travel, so this compact cylinder tolerates higher piston speeds and 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.
Construction follows the JIS mini 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. It runs on air filtered to 40 um at 0.15 to 1.0 MPa (22 to 145 psi), withstands a 1.5 MPa (215 psi) proof pressure, operates from -20 to +70 C, and covers speeds of 30 to 800 mm/s. Ports are M5x0.8, the male rod thread is M8x1.25 on an 8 mm rod, and mounting is via FA flange or LB foot with optional I and Y rod knuckles. As a computed buyer insight, the 157 N push force equals about 16 kgf, so a safe working load is roughly 9.5 kg, or about 8 kg for vertical lifting.
Airtac MGC Stainless Steel Mini Cylinder MGC20X25 Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC20X25 |
|---|---|
| Series | MGC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 MGC20X25
| MGC | JIS round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MGC20X25 Is Used
Small-parts ejection on assembly fixtures
The 157 N push at 0.5 MPa ejects lightweight machined or molded parts from nests, while the variable air cushion stops the piston gently at the 25 mm stroke end even at elevated cycle speeds.
Pusher on compact conveyor lines
With roughly 9.5 kg safe working load derived from the 0.5 MPa push force, the MGC20X25 diverts small cartons or trays, and the adjustable cushion prevents bounce when the pusher bottoms out.
Lab and test-rig actuation
The SUS304 stainless barrel, 30 to 800 mm/s speed range and fine-tunable cushioning suit benchtop clamping, indexing and sample-positioning duties where smooth end-of-stroke behavior matters.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC20X25 the Right Cylinder?
At 20 mm bore this is the smallest MGC offered, so there is no smaller cushioned option in the family; if you need more force, step up to the 25 mm bore (245.3 N push at 0.5 MPa) or larger. If your application runs slowly with light loads and does not need end-of-stroke deceleration, the plain bumper-type MG in the same bore is the no-cushion alternative for 20 to 40 mm bores. Choose the MGC20X25 when you want its 157 N push at 0.5 MPa (219.8 N at 0.7 MPa) with an adjustable cushion both ends. Order the S code if you plan to fit CMSG, DMSG or EMSG magnetic sensors; without the magnet no sensor can be mounted. Mount with the FA flange or LB foot, add I or Y rod knuckles as needed, and for strokes toward the 500 mm standard maximum keep side load off the rod or add external guidance. Strokes beyond 500 mm up to 800 mm are made to order.
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 MGC20X25 FAQ
At 0.5 MPa it pushes with 157 N and pulls with 131.9 N; at 0.7 MPa those figures rise to 219.8 N push and 184.7 N pull. The theoretical maximum is 32 kgf at 1.0 MPa. A practical rule of thumb is to size the load at about 0.6 of the push force, giving roughly 9.5 kg, or about 8 kg for vertical lifting.
The cushion is adjustable, not a fixed pad: a needle at each end meters the exhaust air to decelerate the piston smoothly before it reaches the cover, which lets you run faster strokes and heavier moving loads without impact damage. It only decelerates the stroke end, however; it is not a lock or brake, and the cylinder will not hold position on air loss, so use an external rod lock or pilot check valve for a held load.
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