Airtac MGD Double Rod Mini Cylinder MGD40X400S
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD40X400S is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke400 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM14×1.5
- 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 MGD40X400S
The AirTAC MGD40X400S is a double acting, double rod JIS round-body mini cylinder with a 40 mm bore and 400 mm stroke. A 16 mm rod exits both the front and back covers with the same M14x1.5 male thread at each end, so the through-rod 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. Because the rod-side area is active in both directions, the output force is equal both ways: about 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa, with a theoretical maximum of 107.6 kgf at 1.0 MPa. Halving the 0.5 MPa force gives a safe vertical working load of roughly 26 kg.
Construction follows the JIS mini-cylinder footprint: a riveted SUS304 stainless barrel with hard-chrome-plated carbon steel rods, suited to damp and washdown environments. A fixed anti-impact bumper pad softens each stroke end; it is not an adjustable air cushion, so for variable cushioning step up to the MGCD series. The fitted magnet (S code) accepts CMSG, DMSG or EMSG switches for end-of-stroke signalling. Ports are 1/8" on every MGD bore, operating pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, temperature range is -20 to +70 C, and speed is 30-800 mm/s. Mounting is FA flange or LB foot, with I and Y rod knuckles available.
Airtac MGD Double Rod Mini Cylinder MGD40X400S Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD40X400S |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M14×1.5 |
| 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 | Fixed anti-impact bumper pads |
| 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.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 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 MGD40X400S
| MGD | JIS round-body mini cylinder (double-rod). |
|---|---|
| 40 | 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 MGD40X400S Is Used
Anti-rotation linear slide
The through-rod at both ends resists rotation and side load, keeping a 400 mm stroke slide tracking straight on pick-and-place or transfer fixtures without external guides.
Twin-load push
With 527.8 N available at each rod end simultaneously at 0.5 MPa, one cylinder can eject or position two workpieces at once on packaging and assembly lines.
Rear-mounted stop flag
The fitted magnet and the free back rod end let you mount a stop or switch flag on the rear rod, giving a repeatable stroke-end signal via CMSG, DMSG or EMSG sensors.
Is the Airtac MGD Double Rod Mini Cylinder MGD40X400S the Right Cylinder?
At 527.8 N per direction at 0.5 MPa, the MGD40X400S is the largest MGD in the range and suits the heaviest double-rod duties; the 400 mm stroke sits within the 500 mm maximum standard stroke for bore 40. Choose this model when you need equal force both ways, anti-rotation guidance or a rear rod end for a switch flag or second load. If your force budget allows, the MGD32X400 offers the same stroke class at lower cost; if you need bore 50 or 63 or adjustable cushioning, move to the MGCD series, and for a conventional single-rod cylinder use the MG. Mount with FA flange or LB foot and add I or Y knuckles as needed; the S code already fitted means CMSG/DMSG/EMSG switches can be ordered with the cylinder. For long strokes, support the rod or limit side load to protect the bearings, and remember the cylinder will not hold a load on air loss - use an external rod lock or pilot check valve where a held position is required.
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 MGD40X400S FAQ
Force is equal in both directions because the rod-side area works both ways: 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa, with a theoretical maximum of 107.6 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), temperature range is -20 to +70 C, speed is 30-800 mm/s, and the air must be filtered to 40 um. Ports are 1/8" and the rod thread is M14x1.5 at both ends.
The MGD has a rod exiting both covers with the same M14x1.5 thread at each end, so force is identical extending and retracting and the through-rod resists rotation and side load; a single-rod MG has a larger extend force but unequal retract force and no rear rod for a flag or second load. This model carries a fixed anti-impact bumper pad, not an adjustable cushion (that is MGCD). The fitted magnet allows CMSG, DMSG or EMSG switches, and the cylinder will not hold a load on air loss - add an external rod lock or pilot check valve for held positions.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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