Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X50S
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X50S is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 50mm 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
- Stroke50 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 MGCD20X50S
The AirTAC MGCD20X50S is a double acting, double-rod JIS round-body mini cylinder with a 20 mm bore and 50 mm stroke, fitted with a variable air cushion at both ends. Because a rod exits both covers, the piston sees the rod-side area in each direction, so the output force is equal both ways: about 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. The adjustable cushion decelerates the piston smoothly at each end of the stroke, allowing higher travel speeds and heavier loads than an uncontrolled stop, while the rear rod end can carry a second load, a stop flag, or a position marker.
Construction follows the JIS mini-cylinder footprint with a riveted SUS304 stainless barrel and a hard-chrome-plated 8 mm rod threaded M8x1.25 at both ends; the air port is M5x0.8. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a proof pressure of 1.5 MPa (215 psi), and the cylinder runs from -20 to +70 C at speeds of 30-800 mm/s on air filtered to 40 um. The fitted magnet (S code) allows CMSG, DMSG or EMSG switches to be mounted for end-of-stroke detection. As a practical sizing rule, keep the working load near 0.6 of the push force, so about 8 N (roughly 8 kgf halved to a safe vertical figure of about 8 kg) per direction.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X50S Technical Specifications
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X50S |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 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 MGCD20X50S
| MGCD | JIS round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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 MGCD20X50S Is Used
High-speed anti-rotation transfer
The through-rod keeps the carried part from twisting during fast 50 mm pick-and-place moves, while the variable air cushion at each end absorbs the deceleration so light fixtures can cycle at speed without hard stops.
Twin-load press with soft stop
With equal 131.9 N output in both directions, the front rod can press a small part while the rear rod ejects or positions it, and the adjustable cushion gives a smooth landing instead of a jolt at the end of the stroke.
Rear-switch slide
The fitted magnet lets CMSG or DMSG switches ride the barrel while the rear rod end drives a flag or stop block, giving a compact cushioned slide with position feedback on both ends of the 50 mm travel.
Is the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X50S the Right Cylinder?
Size the MGCD20X50S by force, not bore alone: at 131.9 N per direction at 0.5 MPa it is the smallest cushioned double-rod unit in the range, so step up to bore 25 or 32 if your load needs more margin. Choose the MGCD when you need equal force both ways plus adjustable end-of-stroke deceleration; if you need a double-rod cylinder at bore 20-40 with a fixed bumper instead of an air cushion, the MGD is the matching type, and for a single rod with a cushion choose the MGC. The through-rod also gives natural anti-rotation behaviour and a rear rod end for a stop or flag. Mount with the LB foot or FA flange, and pair rod ends with I or Y knuckle joints; CB and SDB mounts are not offered on this series. This S-coded model carries a magnet, so CMSG, DMSG or EMSG switches can be clamped to the barrel for position feedback. The 50 mm stroke is well within the 300 mm maximum standard stroke for bore 20; keep side loads off the rod on longer travels and guide the load externally.
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 MGCD20X50S FAQ
Because both sides of the piston are rod-side area, output is equal in both directions: 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), the speed range is 30-800 mm/s, and the temperature range is -20 to +70 C on air filtered to 40 um.
The cushion is an adjustable air restriction at each end that decelerates the piston for smooth, controlled stops at higher speeds; it is not a lock, so the load is not held if air is lost and an external rod lock or pilot check valve is recommended for holding. Unlike the MGD, which uses fixed bumper pads, the MGCD has a tunable air cushion, and unlike the single-rod MGC it has a rod at both ends, so force is equal both ways. The fitted magnet also accepts CMSG, DMSG or EMSG switches.
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