Airtac MGD Double Rod Mini Cylinder MGD40X25S
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD40X25S is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø40mm bore and 25mm 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
- Stroke25 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 MGD40X25S
The AirTAC MGD40X25S is a double acting, double rod JIS round-body mini cylinder with a 40 mm bore and 25 mm stroke. A 16 mm rod exits both the front and rear 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 chambers 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 leaves the rear rod end free to carry a stop flag or drive a second load.
Construction follows the JIS mini-cylinder footprint: a SUS304 stainless barrel with hard-chrome plated rods and riveted covers, 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. The fitted magnet (the S code) allows CMSG, DMSG or EMSG switches to be mounted on the barrel. Operating range is 0.15-1.0 MPa (22-145 psi) with air filtered to 40 um, proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C and speed 30-800 mm/s. As a working rule, keep vertical loads near 0.6 of the push force, so about 32 kg for this cylinder.
Airtac MGD Double Rod Mini Cylinder MGD40X25S Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD40X25S |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 MGD40X25S
| MGD | JIS round-body mini cylinder (double-rod). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 MGD40X25S Is Used
Anti-rotation slide
The through-rod at both covers resists rotation on a 25 mm stroke pick-and-place slide, holding part orientation without external guides while delivering 527.8 N in each direction.
Twin-load push
Drive two small clamps or ejectors at once, one from each M14x1.5 rod end, with equal 527.8 N force per side at 0.5 MPa so both stations see identical pressure.
Rear switch or stop flag
Use the back rod end, fitted with the magnet for CMSG/DMSG/EMSG switches, to carry a stop flag or trip a limit on packaging and assembly fixtures.
Is the Airtac MGD Double Rod Mini Cylinder MGD40X25S the Right Cylinder?
At 40 mm bore this is the largest MGD, delivering 527.8 N per direction at 0.5 MPa. Size down to the 32 mm bore (345.6 N) if your load is lighter, or step to the MGCD if you need bores 50 or 63 mm or an adjustable cushion. For a single-rod cylinder with a larger push force, choose the MG series instead. Pick the MGD40X25S when you need anti-rotation guidance, equal force both ways, or a rear rod end for a switch flag or twin load. Mounting is FA flange or LB foot, with I and Y rod knuckles available; there is no SDB or CB pivot option on the double-rod design. The fitted magnet supports CMSG/DMSG/EMSG position sensing. The 25 mm stroke is well inside the 500 mm maximum standard stroke for this bore; for long strokes, support the rod against side 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 MGD40X25S FAQ
Because the rod occupies both piston faces, force is equal 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) with air filtered to 40 um, proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-800 mm/s, and a 1/8" port on every MGD bore.
The MGD has a rod exiting both covers, so force is identical extending and retracting and the through-rod resists rotation and side load; the single-rod MG has a larger push than pull and no rear rod end. The bumper pad only softens stroke ends, it does not hold a load, so use an external rod lock or pilot check valve for load holding. The fitted S magnet lets you mount CMSG, DMSG or EMSG switches.
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.
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