Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300 is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 300mm 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
- Stroke300 mm
- Port size1/8"
- Acting typeDouble acting, double rod + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300
The AirTAC MGCD40X300 is a double acting, double-rod JIS round-body mini cylinder with a 40 mm bore and 300 mm stroke. A 16 mm hard-chrome-plated rod exits both covers with the same M14x1.5 male thread at each end, so the rod-side area is pressurized in either direction and 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. A variable air cushion at both ends decelerates the piston smoothly, letting this cylinder run at higher speeds and carry heavier loads than an unbuffered equivalent. The through-rod also gives natural anti-rotation behavior and a free rear rod end for a position flag, stop, or second load.
Construction follows the JIS mini-cylinder footprint: a riveted SUS304 stainless barrel, hard-chrome rods, and two-way lubricant-storing piston seals for long service life. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), tolerates -20 to +70 C, and travels at 30-800 mm/s; proof pressure is 1.5 MPa (215 psi). Ports are 1/8". For a realistic working load, size around 0.6 of the thrust, roughly 316 N; as a vertical figure that is about 26 kg. Mount with an FA flange or LB foot and add I or Y rod knuckles; order the S code if you want a magnet for CMSG, DMSG, or EMSG switches.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300 Technical Specifications
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300 |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod + cushion |
| 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 | Variable air cushion, both ends |
| 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 MGCD Stainless Steel Mini Air Cylinder MGCD40X300
| MGCD | JIS round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 MGCD Stainless Steel Mini Air Cylinder MGCD40X300 Is Used
High-speed anti-rotation transfer
The through-rod keeps the payload from twisting while the variable air cushion soaks up the stop at 300 mm of travel, letting the 527.8 N-per-side MGCD40X300 cycle faster than an unbuffered cylinder.
Twin-load press with soft stop
Rod ends on both covers let one cylinder carry two small fixtures or a workpiece and an anvil, each pressing with about 316 N usable force, while the adjustable cushion gives a smooth, non-jarring bottom-out.
Rear-switch positioning slide
The rear rod end drives a flag or dog past position sensors (with the S magnet and CMSG/DMSG/EMSG switches), turning the cushioned 300 mm stroke into a compact two-position slide on an LB foot or FA flange.
Is the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300 the Right Cylinder?
Choose the MGCD40X300 when you need a 40 mm bore with equal force in both directions, a through-rod for anti-rotation or a rear accessory, and adjustable deceleration at each stroke end; its 527.8 N per direction at 0.5 MPa sits mid-range in the MGCD family. If your load needs more muscle, step up to the MGCD50 or MGCD63 (824.3 N and 1400.9 N at 0.5 MPa); for lighter duty, the MGCD32 delivers 345.6 N. If you want a double-rod cylinder with a fixed bumper pad instead of an adjustable cushion in this bore range, look at the MGD; if a single rod plus cushion suits the job better, the MGC is the single-rod counterpart. Mounting is FA flange or LB foot with I or Y knuckles on the rod; there is no CB or SDB option. Add the S magnet code if you plan to fit CMSG, DMSG, or EMSG reed sensors. The 300 mm stroke is within the 500 mm standard limit for this bore, and on long strokes keep side load on the rod low and support the load externally to protect the bearings.
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 and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300 FAQ
Because it is a double-rod cylinder, force is equal in both directions: 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. It is double acting, runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), withstands a 1.5 MPa (215 psi) proof pressure, operates from -20 to +70 C, and travels at 30-800 mm/s. Ports are 1/8" and the rod thread is M14x1.5 at both ends.
The cushion is an adjustable air damper at each stroke end that decelerates the piston for smooth high-speed stops; it is not a lock, so the load is not held on air loss and an external rod lock or pilot check valve is recommended. Unlike the MGD, which uses fixed bumper pads, the MGCD cushion is adjustable, and unlike the single-rod MGC it has a rod at both covers, giving equal force both ways and anti-rotation. Add the S magnet code to fit CMSG, DMSG, or EMSG switches.
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