Airtac MGD Double Rod Mini Cylinder MGD25X400S
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD25X400S is a genuine double acting, double rod 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
- Rod threadM10×1.25
- CushionFixed anti-impact bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MGD Double Rod Mini Cylinder MGD25X400S
The MGD25X400S is a JIS-standard round-body mini cylinder, double acting, with a through rod that exits both the front and rear covers. Because a rod occupies the piston area on each side, the force is equal in both directions: about 206.1 N at 0.5 MPa and 288.5 N at 0.7 MPa, with a theoretical maximum of 42 kgf at 1.0 MPa. The 400 mm stroke is a made-to-order length that exceeds the 300 mm standard maximum for a bore 25 MGD. The magnet fitted by the S code allows CMSG, DMSG or EMSG switches to be mounted on either rod end.
The through-rod construction resists rotation and side load, keeps stroke-end position repeatable, and lets the rear rod end carry a stop flag or drive a second load. A fixed anti-impact bumper pad softens the stroke ends (this is not an adjustable cushion; for that see the MGCD). The SUS304 stainless barrel and hard-chrome plated rod suit damp and washdown environments, and ports are 1/8" on this bore. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof rating, at speeds of 30-800 mm/s and temperatures from -20 to +70 C. As a rule of thumb, keep vertical loads to about 10 kg on this 25 mm bore.
Airtac MGD Double Rod Mini Cylinder MGD25X400S Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD25X400S |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 400 mm |
| Acting type | Double acting, double rod |
| 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 | Fixed anti-impact bumper pads |
| 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 MGD Double Rod Mini Cylinder MGD25X400S
| MGD | JIS round-body mini cylinder (double-rod). |
|---|---|
| 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 MGD Double Rod Mini Cylinder MGD25X400S Is Used
Anti-rotation slide
The through rod resists rotation on a 400 mm stroke, keeping a linear slide or gate square at both ends with equal 206.1 N force in each direction.
Twin-load push
Front and rear M10x1.25 rod ends each carry a load, so one cylinder indexes two parts or drives two chutes symmetrically at up to 288.5 N at 0.7 MPa.
Rear switch and stop flag
The magnet and rear rod end support a CMSG/DMSG/EMSG switch and a stop or flag plate, with the fixed bumper pad decelerating each stroke end.
Is the Airtac MGD Double Rod Mini Cylinder MGD25X400S the Right Cylinder?
At 206.1 N per direction at 0.5 MPa, the bore 25 MGD suits medium mini-cylinder loads; step down to bore 20 for lighter duty or up to bore 32 for more force, and to the MGCD for bores 50/63 or an adjustable cushion. Choose the MGD over the single-rod MG when you need anti-rotation, equal force both ways, a rear-mounted switch or stop flag, or two loads driven from one cylinder. Mounting is FA flange or LB foot, with I and Y rod knuckles available (no SDB/CB pivot on the double-rod). The S code fitted here enables CMSG/DMSG/EMSG sensing. The 400 mm stroke is non-standard for this bore (300 mm max standard), so expect a made-to-order build; on long strokes, guide side loads externally to protect the 10 mm rod.
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/impact settings and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MGD Double Rod Mini Cylinder MGD25X400S FAQ
As a double-rod cylinder the force is equal both ways: 206.1 N at 0.5 MPa and 288.5 N at 0.7 MPa, with a theoretical maximum of 42 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-800 mm/s, and the port is 1/8". Keep vertical loads to roughly 10 kg.
The MGD has a rod exiting both covers with the same M10x1.25 male thread at each end, so it resists rotation and side load and gives equal force in both directions, while the MG has one rod and a larger extend force. The fitted magnet (S code) accepts CMSG, DMSG or EMSG switches. It has a fixed anti-impact bumper pad only, not an adjustable cushion, and it will not hold a load on air loss; use an external rod lock or pilot check valve for that.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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