Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X250
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X250 is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 250mm 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
- Stroke250 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X250
The AirTAC MGCD20X250 is a double acting, double rod JIS mini cylinder with a 20 mm bore and a 250 mm stroke. A hard-chrome rod exits BOTH covers with the same M8x1.25 male thread at each end, so the two rod ends move together and the output force is EQUAL in both directions: about 131.9 N each way at 0.5 MPa, rising to 184.7 N at 0.7 MPa, with a theoretical maximum of 26.9 kgf at 1.0 MPa. Both ends carry a VARIABLE air cushion (adjustable, not a fixed bumper pad), so the piston decelerates smoothly at each end of the 250 mm travel for higher-speed cycles and heavier loads. In practice, apply about 0.6 of the push force as a working load, which gives roughly 8 kg for safe vertical lifting at 0.5 MPa.
Construction follows the JIS round-body mini format: a riveted SUS304 stainless barrel with a hard-chrome (20 um) carbon-steel rod, two-way lubricant-storing piston seals, and M5x0.8 air ports. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), withstands a proof pressure of 1.5 MPa (215 psi), operates from -20 to +70 C, and covers speeds of 30-800 mm/s. Mounting is by FA flange or LB foot, with I and Y rod knuckles available. Note that the cylinder does not lock or hold its position on air loss; add an external rod lock or pilot check valve if load holding is required. The optional S code adds a magnet for CMSG, DMSG or EMSG switches; this model is supplied without a magnet, so no sensor can be mounted unless the -S variant is ordered.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X250 Technical Specifications
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X250 |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod + 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 300 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 132 N |
| 0.7 MPa | 185 N |
| Max (@1.0 MPa) | 27 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X250
| MGCD | JIS round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×250 | 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 MGCD Stainless Steel Mini Air Cylinder MGCD20X250 Is Used
High-speed anti-rotation transfer
The through-rod resists rotation while the variable air cushion brakes the load smoothly at both ends, letting small parts move quickly over the 250 mm stroke without hard stops.
Twin-load press with soft stop
Both rod ends carry a workpiece or fixture, and the adjustable cushion gives a gentle deceleration before contact, ideal for light pressing or marking at this 131.9 N force class.
Rear-switch slide
Use the rear rod end for a stop or flag and the front end for the load; order the -S variant to fit CMSG or DMSG switches for end-of-stroke detection on the slide.
Is the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X250 the Right Cylinder?
At 131.9 N per direction at 0.5 MPa, the MGCD20X250 is the smallest cushioned double-rod cylinder in the range; size up to bore 25, 32, 40, 50 or 63 if your load needs more force. Choose the MGCD when you need equal force both ways, anti-rotation guidance from the through-rod, and smooth adjustable deceleration at both ends of a long 250 mm stroke. If you want a double-rod cylinder with a fixed bumper instead of an air cushion, look at the MGD (bores 20-40); if a single rod plus cushion is enough, the MGC is the alternative. Mount with FA flange or LB foot, add I or Y knuckles for rod-end articulation, and order the -S variant if you need position sensing with CMSG, DMSG or EMSG switches. For long strokes like 250 mm, support the side load carefully and keep lateral forces off the rod to protect the bearings.
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 MGCD Stainless Steel Mini Air Cylinder MGCD20X250 FAQ
Because the rod-side area is active in both directions, output is equal both ways: 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa, with a theoretical maximum of 26.9 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), temperature range is -20 to +70 C, speed range is 30-800 mm/s, and the fluid is air filtered to 40 um. Ports are M5x0.8 and the rod thread is M8x1.25 at both ends.
The MGCD has an adjustable air cushion at both ends that decelerates the piston near each end of stroke, allowing higher speeds and heavier loads than an unbraked stop; it is not a lock, so use an external rod lock or pilot check valve to hold a load on air loss. Unlike the MGD, which is a double-rod cylinder with a fixed bumper pad, the MGCD uses a variable air cushion. Unlike the single-rod MGC, the MGCD's through-rod gives equal force in both directions and anti-rotation guidance. The -S variant adds a magnet for CMSG, DMSG or EMSG switches.
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