
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X450 is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 450mm stroke, M5×0.8 air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
The AirTAC MGCD20X450 is a JIS round-body mini cylinder, double acting and double rod, with a variable air cushion at both ends. Because a rod exits both covers with the same M8x1.25 male thread, both stroke directions work on the rod-side area, so the output is equal each way: 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 long 450 mm travel, which suits higher speeds and heavier moving loads than an un cushioned mini cylinder can handle.
Construction follows the JIS mini footprint: a SUS304 stainless barrel with a hard-chrome steel rod, riveted covers and a two-way lubricant-storing piston seal. Air filtered to 40 um drives it over 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), temperature range is -20 to +70 C and speed range is 30-800 mm/s. The 450 mm stroke exceeds the 300 mm maximum standard stroke for bore 20, so this is a made-to-order length. Note that 131.9 N is roughly 13 kgf, so as a rule of thumb plan on about 6 kg as a safe vertical load. Position sensing requires the optional -S magnet code for CMSG, DMSG or EMSG switches; this model has no magnet fitted.
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X450 |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 450 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.
| 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).
| MGCD | JIS round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×450 | 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.
The through-rod keeps the load from twisting while the variable air cushion softens each end of the 450 mm travel, letting a light 20 mm bore shuttle small parts at up to 800 mm/s.
Both rod ends carry identical 131.9 N thrust at 0.5 MPa, so two small pads can press or clamp in line while the adjustable cushion gives a smooth, non-shocking stop.
The rear rod end drives a position flag or trigger while the front rod does the work; order the -S variant so CMSG or DMSG switches can read both ends of stroke.
Choose the MGCD20X450 when you need the smallest cushioned MG-family bore with equal force in both directions and a long, non-standard 450 mm stroke. At 131.9 N per way at 0.5 MPa it is the lightest thrust class in the range; step up to MGCD25 for 206.1 N, MGCD32 for 345.6 N or MGCD63 for 1400.9 N. If you want a double-rod mini cylinder in bore 20 to 40 with a fixed bumper instead of an adjustable cushion, look at the MGD; for a single rod with a variable cushion, the MGC. The through-rod gives natural anti-rotation and a free rear rod end for a stop, flag or second load. Mount with the LB foot or FA flange and add I or Y rod knuckles on the loaded end; SDB and CB are not offered. For long 450 mm strokes, keep side loads low and guide the load externally. Add the -S code if you need CMSG, DMSG or EMSG magnetic switches.
Quick checklist
As a double-rod cylinder the force 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. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), temperature range is -20 to +70 C and speed range is 30-800 mm/s. The 450 mm stroke is a made-to-order length above the 300 mm standard maximum for bore 20.
The MGCD has an adjustable air cushion at both ends that decelerates the piston near each end of stroke for smooth stops at higher speed or load; it is not a lock, so use an external rod lock or pilot check valve to hold position on air loss. Unlike the MGD, which uses fixed bumper pads, the cushion here is adjustable. Unlike the single-rod MGC, the MGCD has a rod at both ends, giving equal force in both directions and anti-rotation. Position sensing needs the -S magnet for CMSG, DMSG or EMSG switches.
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