Airtac MGD Double Rod Mini Cylinder MGD40X400
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD40X400 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 MGD40X400
The MGD40X400 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 two rod ends move together and 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. Because both sides of the piston see the rod-side area, there is no separate push and pull figure. 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.
Construction follows the JIS mini-cylinder footprint: a SUS304 stainless barrel with riveted covers and a hard-chrome plated rod, suited to damp and washdown environments. A fixed anti-impact bumper pad decelerates the piston at each stroke end; it is not an adjustable air cushion. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, air filtered to 40 um, a temperature range of -20 to +70 C and speeds of 30-800 mm/s. Ports are 1/8" on this bore. Note that the cylinder does not hold its load on air loss; use an external rod lock or pilot check valve where a load must be held. For a realistic vertical lift, apply about 0.6 of the push force: roughly 32 kg safe working load.
Airtac MGD Double Rod Mini Cylinder MGD40X400 Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD40X400 |
|---|---|
| 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 MGD40X400
| 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 MGD40X400 Is Used
Anti-rotation linear slide
The through-rod on the MGD40X400 resists rotation over its 400 mm stroke, keeping a guided tool plate or fixture oriented without extra anti-rotation hardware.
Twin-load push
With 527.8 N available at each rod end at 0.5 MPa, one cylinder can drive two workpieces or a synchronized pair of actions simultaneously from the same piston.
Rear-mounted stop or flag
The back rod end carries a stop block or switch flag, giving a repeatable stroke-end reference; add the S code magnet to fit CMSG, DMSG or EMSG switches.
Is the Airtac MGD Double Rod Mini Cylinder MGD40X400 the Right Cylinder?
At 40 mm bore this is the largest MGD, delivering 527.8 N in both directions at 0.5 MPa. If you need more force, or a 50/63 bore or an adjustable cushion, step up to the MGCD double-rod series; if you do not need a through-rod, the single-rod MG gives a higher push force in the same bore. The 400 mm stroke sits within the 500 mm maximum standard stroke for this bore, so no nonstandard surcharge applies. Choose the optional S code if you want position detection with CMSG, DMSG or EMSG switches; without the magnet no sensor can be mounted. Mount with FA flange or LB foot, and add I or Y rod knuckles at either or both rod ends. On this long 400 mm stroke, keep side load on the rod low and use the through-rod's anti-rotation benefit or external guides to protect the bearings. Thread options are PT (blank), G or NPT.
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 MGD40X400 FAQ
Force is equal in both directions because a rod occupies both sides of the piston: 527.8 N each way at 0.5 MPa and 738.9 N each way 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), the fluid is air filtered to 40 um, temperature range is -20 to +70 C, and speed is 30-800 mm/s. Ports are 1/8" and the rod thread is M14x1.5 at both ends.
The MGD40X400 has a rod exiting both covers with the same M14x1.5 thread, giving equal force both ways, resistance to rotation and side load, and a usable rear rod end for a stop flag or second load; the single-rod MG has a higher push force in the same bore but no through-rod. This model has fixed anti-impact bumper pads only, not the adjustable cushion of the MGCD. To mount CMSG, DMSG or EMSG switches you must order the S code magnet version; without the magnet no sensor can be fitted.
Authorized Export Seller
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.
Request a Quote for Airtac MGD Double Rod Mini Cylinder MGD40X400
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.