
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD50X400S is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø50mm bore and 400mm stroke, 1/4" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
The AirTAC MGCD50X400S is a double acting, double-rod JIS mini cylinder with a 50 mm bore and a 400 mm stroke, built with a variable air cushion at both ends. Because a 20 mm rod exits both covers with the same M18x1.5 male thread, the piston sees the rod-side area in each direction, so the output force is equal both ways: about 824.3 N at 0.5 MPa and 1154 N at 0.7 MPa, with a theoretical maximum of 168.1 kgf at 1.0 MPa. The adjustable cushion decelerates the piston smoothly at each end, letting this 50 mm cylinder run at higher speeds or carry heavier loads than an unbuffered mini cylinder.
Construction follows the JIS round-body mini format: a SUS304 stainless barrel with riveted covers and hard-chrome plated rods for long seal and bearing life. Air supply is filtered to 40 um, operating pressure spans 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, and the speed range is 30-800 mm/s across -20 to +70 C. The fitted magnet (S code) accepts CMSG, DMSG or EMSG switches, and the rear rod end doubles as a mounting point for a stop, flag or second load. As a buyer insight, applying the usual 0.6 rule of thumb to the 824.3 N force gives a safe vertical load of roughly 50 kg.
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD50X400S |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 mm |
| Acting type | Double acting, double rod + cushion |
| Port size | 1/4" |
| Rod thread | M18×1.5 |
| 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.
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 825 N |
| 0.7 MPa | 1155 N |
| Max (@1.0 MPa) | 168 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). |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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 rotating while the variable air cushion brings the 824.3 N push to a smooth stop at each end, allowing fast pick-and-place slides at speeds up to 800 mm/s.
Rod ends on both covers let the MGCD50X400S carry a light pressing or staking load on each side, with the adjustable cushion absorbing the impact so fixtures are not hammered at stroke end.
The fitted magnet accepts CMSG or DMSG switches, and the rear rod end can drive a flag or stop, making this 400 mm stroke cylinder a compact guided slide for indexing conveyors.
Size MGCD cylinders by the equal both-way force: this 50 mm bore delivers about 824.3 N each way at 0.5 MPa, sitting between the 40 mm (527.8 N) and 63 mm (1400.9 N) frames, so step up to MGCD63 if your load needs more margin. If you need a double-rod cylinder with a fixed bumper pad instead of an adjustable cushion in the 20-40 mm range, choose the MGD; for a single-rod cushioned cylinder, the MGC is the counterpart. The variable air cushion at both ends suits high-speed cycles and heavier moving loads, and the through-rod gives natural anti-rotation plus a rear rod end for a stop or flag. Mount with the FA flange or LB foot, add I or Y rod knuckles for off-axis links (SDB and CB are not offered), and note that the -S magnet is already fitted so CMSG, DMSG or EMSG switches can be added. The 400 mm stroke is within the 500 mm maximum standard stroke for this bore; for very long strokes, support the rod against side load.
Quick checklist
This 50 mm bore double-rod cylinder produces 824.3 N in each direction at 0.5 MPa and 1154 N at 0.7 MPa, with a theoretical maximum of 168.1 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), speed range is 30-800 mm/s, and the temperature range is -20 to +70 C with air filtered to 40 um.
The cushion is an adjustable air buffer at both end covers: you tune it to decelerate the piston smoothly before stroke end, which permits higher speeds and heavier loads. Unlike the MGD, which uses fixed bumper pads, the MGCD cushion is adjustable. Unlike the single-rod MGC, the MGCD has a rod at both covers, so force is equal in both directions (about 824.3 N each way here). The fitted S magnet allows CMSG, DMSG or EMSG switches. Note the cushion only decelerates; it does not lock the load, so use an external rod lock or pilot check valve where holding is required.
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