Airtac MGC Stainless Steel Mini Cylinder MGC20X350
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC20X350 is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 350mm 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
- Stroke350 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 MGC20X350
The AirTAC MGC20X350 is a double acting, JIS-standard round-body mini cylinder with a 20 mm bore and a 350 mm stroke. Unlike the bumper-type MG, this MGC variant carries a variable air cushion at both stroke ends: turn the cushion needle to dial in a smooth deceleration profile, so the piston lands softly even at higher speeds or with heavier moving loads. The porting is M5x0.8 and the male rod thread is M8x1.25 on an 8 mm rod.
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. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), tolerates 1.5 MPa (215 psi) proof pressure and -20 to +70 C, and reaches 30-800 mm/s. At 0.5 MPa it pushes 157 N and pulls 131.9 N; the theoretical maximum is 32 kgf at 1.0 MPa. As a rule of thumb, keep vertical lifting loads to about 0.6 of the push force, roughly 9 kg here.
Airtac MGC Stainless Steel Mini Cylinder MGC20X350 Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC20X350 |
|---|---|
| Series | MGC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 350 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 MGC20X350
| MGC | JIS round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×350 | 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 MGC20X350 Is Used
High-cycle parts ejector
Pushing small parts off a conveyor or chute at up to 800 mm/s benefits from the variable air cushion, which decelerates the piston before it hammers the cover at the 350 mm end of travel.
Light vertical lift-and-lower
With 157 N push at 0.5 MPa, the MGC20X350 can raise roughly 9 kg safely (0.6 rule of thumb); the adjustable cushion softens the touchdown so the load does not bounce or slam.
Small assembly press station
Light pressing, staking or clipping on compact fixtures uses the 219.8 N push at 0.7 MPa, with the cushion absorbing the final approach so delicate tooling is not shocked at stroke end.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC20X350 the Right Cylinder?
At 20 mm bore this is the smallest MGC available, so there is no smaller cushioned model to downsize to; if 157 N of push at 0.5 MPa (about 16 kgf) covers your load with margin, this is the right entry point. 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 you do not need end-of-stroke deceleration, the plain bumper-type MG in the same 20 mm bore is the no-cushion alternative. The 350 mm stroke sits within the 500 mm standard range for this bore, so no made-to-order surcharge applies. Mount with the FA flange or LB foot, add I or Y rod knuckles if the tooling needs a swivel joint, and specify the -S magnet option if you want CMSG, DMSG or EMSG position sensing; without the magnet no sensor can be fitted. At 350 mm of exposed rod, check alignment and side loading carefully, and support the tooling if any lateral force is present.
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 MGC20X350 FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa, 219.8 N push and 184.7 N pull. The theoretical maximum is 32 kgf at 1.0 MPa. For vertical lifting, keep the load to about 0.6 of the push force, roughly 9 kg.
The cushion is an adjustable air chamber at each stroke end: turn the needle valve to meter the exhaust and decelerate the piston smoothly, which lets you run faster or carry heavier moving loads than the fixed-bumper MG. It only decelerates near end of stroke; it is not a lock or brake, and the MGC20X350 will not hold position if air is lost. Use an external rod lock or pilot-operated check valve for a held load.
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