Airtac MGC Stainless Steel Mini Cylinder MGC20X300
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC20X300 is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 300mm 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
- Stroke300 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 MGC20X300
The AirTAC MGC20X300 is a double acting, JIS-standard round-body mini cylinder with a 20 mm bore and a 300 mm stroke, fitted with a variable air cushion at both stroke ends. Unlike the bumper-type MG, the cushion needles can be adjusted to decelerate the piston smoothly near end of travel, so this 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, and the theoretical maximum force at 1.0 MPa is 32 kgf. As a rule of thumb, keep vertical lifting loads to about 0.6 of the push force, which works out to roughly 9.6 kg for this bore.
Construction follows the JIS mini-cylinder footprint: a SUS304 stainless 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. It is not a tie-rod or extruded-profile design. Operating pressure is 0.15-1.0 MPa (22-145 psi) with proof pressure of 1.5 MPa (215 psi), speed range 30-800 mm/s, and temperature -20 to +70 C on air filtered to 40 um. Ports are M5x0.8, the male rod thread is M8x1.25, and the 300 mm stroke sits well within the 500 mm maximum standard stroke for this bore.
Airtac MGC Stainless Steel Mini Cylinder MGC20X300 Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC20X300 |
|---|---|
| Series | MGC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 300 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 MGC20X300
| MGC | JIS round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×300 | 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 MGC20X300 Is Used
High-speed small-part ejection
The variable air cushion absorbs the end-of-stroke shock of fast push-off moves, letting this 20 mm bore cycle near the top of its 30-800 mm/s range without cover damage.
Light conveyor diverting
With 157 N push at 0.5 MPa, the MGC20X300 nudges small cartons or parts off a line, and the adjustable cushion stops the pusher gently at each end of the 300 mm stroke.
Compact machine actuation
A fit for indexing, clamping or gate actions on compact JIS-style machinery where a smooth, tunable stop matters and mounting is by FA flange or LB foot.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC20X300 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 for 245.3 N push at 0.5 MPa. If your application does not need end-of-stroke deceleration, the plain bumper-type MG in the same 20 mm bore is the lower-cost alternative for bores 20 to 40. Choose the MGC when higher speed or a moving load would otherwise slam the covers. Mounting is by FA flange or LB foot, with I and Y rod knuckles available on the rod side. This model ships without the magnet option; add the S code (MGC20X300S) if you plan to fit CMSG, DMSG or EMSG magnetic switches. With a 300 mm stroke on an 8 mm rod, support the load or use a knuckle to limit side loading on the extended rod.
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 MGC20X300 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 at 1.0 MPa is 32 kgf. For vertical lifting, a safe working figure is about 0.6 of the push force, roughly 9.6 kg.
The cushion is an adjustable air dam at both stroke ends: turn the needle valve to meter exhaust and decelerate the piston smoothly before it reaches the cover. It only decelerates end of travel - it is not a lock or brake, and the cylinder will not hold position on air loss. Use an external rod lock or pilot-operated check valve for a held load.
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