Airtac MGC Stainless Steel Mini Cylinder MGC20X25S
The AirTAC Airtac MGC Stainless Steel Mini Cylinder MGC20X25S 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 MGC20X25S
The AirTAC MGC20X25S is a double acting, JIS-standard round-body mini cylinder with a 20 mm bore and a short 25 mm stroke, built with a variable air cushion at both stroke ends. Unlike the bumper-type MG, the cushion needles let you dial in smooth deceleration near 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. As a rule of thumb, treat about 0.6 of the 0.5 MPa push force as a safe working figure, which is roughly 9 kg for this bore.
Construction follows the MG family recipe: 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. The fitted magnet (the S in the code) accepts CMSG, DMSG or EMSG switches for position sensing. Ports are M5x0.8, the male rod thread is M8x1.25, and mounting options are FA flange, LB foot, plus I and Y rod knuckles. Operating pressure is 0.15 to 1.0 MPa (22 to 145 psi) with a 1.5 MPa (215 psi) proof pressure, temperature range -20 to +70 C, and speed range 30 to 800 mm/s on air filtered to 40 um.
Airtac MGC Stainless Steel Mini Cylinder MGC20X25S Technical Specifications
| Model | Airtac MGC Stainless Steel Mini Cylinder MGC20X25S |
|---|---|
| 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 MGC20X25S
| 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 MGC20X25S Is Used
Small-parts ejection on assembly fixtures
The 157 N push at 0.5 MPa is enough to kick small finished parts off a nest, while the variable air cushion absorbs the end-of-stroke shock so the fixture does not loosen over millions of fast cycles.
Indexing slide with position feedback
With the fitted magnet and a CMSG or DMSG switch on each end, the 25 mm stroke gives a compact confirm-extended/confirm-retracted signal for pick-and-place or gate interlock logic.
Light clamping on jigs and test rigs
About 9 kg of safe working push makes this cylinder suitable for holding small workpieces during drilling or leak testing, with the cushion preventing bounce when the clamp seats.
Is the Airtac MGC Stainless Steel Mini Cylinder MGC20X25S the Right Cylinder?
At 20 mm bore this is the smallest MGC available, so size up if you need more force: the 25 mm bore gives 245.3 N push at 0.5 MPa, the 32 mm bore 402.2 N, and the family tops out at 1557.9 N on the 63 mm bore. If your application runs slowly with light loads and you do not need adjustable deceleration, the bumper-type MG in the same 20 mm bore is the no-cushion alternative. Choose the MGC20X25S when you want the cushion benefit in a compact envelope: the variable air cushion at both ends lets you tune end-of-stroke damping for faster cycles. Order with FA flange or LB foot mounting, add I or Y rod knuckles where the tooling needs them, and keep the S suffix if you plan to fit CMSG, DMSG or EMSG sensors. The 25 mm stroke is well within the 500 mm standard range for this bore, but at short strokes keep rod side loading minimal; use a guide if the load overhangs the 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 MGC20X25S FAQ
At 0.5 MPa the 20 mm bore pushes 157 N and pulls 131.9 N; at 0.7 MPa it pushes 219.8 N and pulls 184.7 N. The theoretical maximum at 1.0 MPa is 32 kgf. For sizing, apply a 0.6 safety factor to the 0.5 MPa push force, giving roughly 9 kg of safe working or vertical lift load.
The cushion is adjustable at both stroke ends: turn the needle to meter the exhaust and decelerate the piston smoothly, which lets you run faster speeds or heavier moving loads than the bumper-type MG. It only decelerates end of stroke, though; it is not a lock or brake, and the cylinder will not hold position on air loss. Use an external rod lock or pilot check valve for a held load.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MGC Stainless Steel Mini Cylinder MGC20X25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.