Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X400S
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X400S is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 400mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke400 mm
- Port size1/8"
- Acting typeDouble acting, double rod + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X400S
The AirTAC MGCD25X400S is a JIS-standard round-body mini cylinder, double acting and double rod, with a variable air cushion at both ends. A 10 mm hard-chrome rod exits both covers with the same M10x1.25 male thread each end, so the two rod ends move together and the piston sees the rod-side area in both directions. That gives an equal output of about 206.1 N each way at 0.5 MPa (288.5 N at 0.7 MPa, up to 42 kgf theoretical at 1.0 MPa), with no push-versus-pull difference to design around. The adjustable cushion decelerates the piston smoothly at each end, so this 400 mm stroke can run fast without hard metal-to-metal stops.
Because the force is equal both ways and the through-rod resists rotation, the rear rod end is free to carry a stop flag, position marker or a second light load. The 25 mm bore in a realistic working range gives roughly 21 kgf at 0.5 MPa, so about 10 kg is a safe vertical load figure. Construction is a riveted SUS304 stainless barrel with hard-chrome rods, running on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof tested to 1.5 MPa (215 psi), from -20 to +70 C at 30-800 mm/s. The fitted magnet (S code) accepts CMSG, DMSG or EMSG switches, and the 1/8" ports take PT threads. Note: 400 mm exceeds the 300 mm maximum standard stroke for this bore, so this is a made-to-order length.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X400S Technical Specifications
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X400S |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 400 mm |
| Acting type | Double acting, double rod + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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 MGCD25X400S
| MGCD | JIS round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 25 | 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.
Where the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X400S Is Used
High-speed anti-rotation transfer
The through-rod keeps the workpiece from spinning while the variable air cushion lets the 400 mm stroke run at the top of the 30-800 mm/s range and still settle smoothly at each end.
Twin-load press with soft stop
Both rod ends carry identical light loads of about 10 kg vertical each, and the adjustable cushion at both ends absorbs the impact instead of hammering the fixture.
Long-travel slide with rear switch flag
The rear rod end drives a stop or flag past the fitted magnet, so CMSG or DMSG switches signal mid-stroke positions along the full 400 mm made-to-order travel.
Is the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X400S the Right Cylinder?
Size the MGCD by equal force, not bore alone: this 25 mm bore delivers 206.1 N each way at 0.5 MPa, so step up to MGCD32 or MGCD40 if your load needs more, or down to MGCD20 for lighter duties. Choose the MGCD when you need a variable air cushion at both ends plus a through-rod for anti-rotation guidance or a rear accessory; if you want a double-rod cylinder with a fixed bumper instead of an adjustable cushion in this small-bore range, look at the MGD, and for a single-rod cushioned cylinder choose the MGC. This model ships with the magnet fitted (-S), so CMSG, DMSG or EMSG switches can be clamped anywhere along the 400 mm stroke for end-of-travel or mid-stroke signalling. Mount with the FA flange or LB foot, and add I or Y rod knuckles where the load is not perfectly aligned; SDB and CB mounts are not offered on this family. At 400 mm the rod is long for its 10 mm diameter, so keep side loads low or support the rod externally, and remember the cushion only decelerates the stroke ends: it is not a lock, so use an external rod lock or pilot check valve if the load must be held on air loss.
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 MGCD25X400S FAQ
As a double-rod cylinder the force is equal in both directions: 206.1 N each way at 0.5 MPa and 288.5 N each way at 0.7 MPa, with a theoretical maximum of 42 kgf at 1.0 MPa. It runs double acting on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof tested to 1.5 MPa (215 psi), from -20 to +70 C at 30-800 mm/s, with 1/8" PT ports and M10x1.25 male rod threads on both ends.
The cushion is an adjustable air restriction at both stroke ends that decelerates the piston for smooth high-speed stops; it is not a brake and will not hold the load on air loss, so add an external rod lock or pilot check valve for that. 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, giving equal force both ways and a free rear rod end. The fitted magnet (-S) accepts CMSG, DMSG or EMSG switches.
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