Airtac MGD Double Rod Mini Cylinder MGD40X350
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD40X350 is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø40mm bore and 350mm 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
- Stroke350 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 MGD40X350
The AirTAC MGD40X350 is a JIS-standard round-body mini cylinder, double acting, with a through rod that exits both the front and back covers. Because the rod-side piston area is active on each side, the output force is equal in both directions: about 527.8 N each way at 0.5 MPa and 738.9 N at 0.7 MPa, with a theoretical maximum of 107.6 kgf at 1.0 MPa. The 16 mm rod carries an M14x1.5 male thread at both ends, and the air port is 1/8". As the largest MGD bore at 40 mm, it suits heavier symmetric pushes, and the 350 mm stroke sits well inside the 500 mm maximum standard stroke for this bore.
The through-rod design 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. Construction is a SUS304 stainless barrel with hard-chrome plated rods and riveted covers, so it copes with damp and washdown environments, and a fixed anti-impact bumper pad softens each stroke end. Operating range is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, 30-800 mm/s speed, and -20 to +70 C temperature. For a realistic vertical load, apply the usual 0.6 rule of thumb to the 527.8 N force: roughly 26 kg safe vertical rating at 0.5 MPa.
Airtac MGD Double Rod Mini Cylinder MGD40X350 Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD40X350 |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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 MGD40X350
| MGD | JIS round-body mini cylinder (double-rod). |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 MGD40X350 Is Used
Anti-rotation linear slide
The through rod of the MGD40X350 resists rotation over its 350 mm stroke, keeping a guided slide or gate aligned without extra anti-rotation hardware, with equal 527.8 N force in both directions.
Twin-load push
With an M14x1.5 rod thread at each end, the front rod drives the workpiece while the rear rod drives a second load or counterbalance, both moving together at 738.9 N per side at 0.7 MPa.
Rear-mounted stop flag
The back rod end carries a mechanical stop or position flag on packaging and transfer machinery, giving a repeatable stroke-end reference driven by the largest MGD force class.
Is the Airtac MGD Double Rod Mini Cylinder MGD40X350 the Right Cylinder?
At 40 mm bore the MGD40X350 is the largest cylinder in the MGD range, delivering 527.8 N in both directions at 0.5 MPa. If you need more force or a bore above 40 mm, or you want an adjustable air cushion instead of the fixed bumper pad, step up to the MGCD series, which adds 50 mm and 63 mm bores. If a single rod is enough and you do not need the through-rod benefits, the single-rod MG series is the lighter alternative. Choose this model when you need anti-rotation guidance, equal force extending and retracting, or a rear rod end for a switch flag or second load. The 350 mm stroke is a standard size (maximum standard stroke for this bore is 500 mm), but long strokes amplify side load, so guide the load externally where possible. Mounting is FA flange or LB foot, with I and Y rod knuckles available; there is no SDB/CB pivot option. This unit has no magnet, so position sensing is not possible; order the S version if you need CMSG, DMSG or EMSG switches. It does not hold position on air loss, so add an external rod lock or pilot check valve for a held load.
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 MGD40X350 FAQ
Because the rod-side area is active both ways, output is equal in each direction: 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 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-800 mm/s, and the air port is 1/8" with an M14x1.5 male thread on both rod ends.
The MGD40X350 has a rod exiting both covers, so force is equal extending and retracting, rotation and side load are better resisted, and the rear rod end can carry a stop flag or drive a second load; the single-rod MG has a larger push than pull. This unit has no magnet, so no sensor can be mounted; order the S version to use CMSG, DMSG or EMSG switches. The fixed bumper pad only softens stroke ends, and the cylinder will not hold a load on air loss.
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