Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300S
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300S 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 MGCD40X300S
The AirTAC MGCD40X300S 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 both sides of the piston see the rod-side area 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. A variable air cushion at both ends lets you tune the deceleration for smooth stops at higher speeds or with heavier loads, and the rear rod end can carry a stop flag, a position marker, or a second load.
Built on the JIS mini-cylinder footprint, the MGCD40X300S uses a riveted SUS304 stainless barrel with hard-chrome rods for corrosion resistance and long seal life, and a two-way lubricant-storing piston seal. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), tolerates 1.5 MPa (215 psi) proof pressure, operates from -20 to +70 C, and covers 30-800 mm/s. Because the S code is fitted, CMSG, DMSG, or EMSG switches can be mounted for position feedback. As a rule of thumb, size the working load at about 0.6 of the push force, so keep vertical loads near 32 kg on this 40 mm bore.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300S Technical Specifications
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300S |
|---|---|
| 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 MGCD40X300S
| 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 MGCD40X300S Is Used
High-speed anti-rotation transfer
The through-rod resists rotation while the adjustable cushions tame 300 mm travel at up to 800 mm/s, moving trays or pallets between stations with the 527.8 N per-side force of the 40 mm bore.
Twin-load press with soft stop
Both rod ends carry workpieces or pads, and the variable air cushions give a smooth, adjustable landing at each end, delivering 738.9 N per direction at 0.7 MPa for light forming or marking.
Rear-switch slide with feedback
The rear rod end drives a flag past CMSG, DMSG, or EMSG switches (magnet fitted), giving position confirmation on a 300 mm stroke while the front rod does the work.
Is the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X300S the Right Cylinder?
Choose the MGCD40X300S when you need equal force in both directions, anti-rotation guidance, and adjustable cushioning at both stroke ends on a 300 mm stroke. At 527.8 N per direction at 0.5 MPa, this 40 mm bore suits medium-load transfer and press applications; step up to bore 50 or 63 for more force, or down to 20/25/32 for compact frames. If you want a double-rod cylinder with a fixed bumper instead of an adjustable cushion in bores 20-40, pick the MGD; for a single rod with a cushion, the MGC is the equivalent. Mount with the FA flange or LB foot, add I or Y rod knuckles on the loaded end, and remember the -S magnet is already fitted for CMSG/DMSG/EMSG switches. The 300 mm stroke is within the 500 mm maximum standard stroke for this bore; for long strokes, guide side loads externally so the rod bearings are not overloaded. Note the cushion only decelerates the piston at each end and is not a lock: for load holding on air loss, add an external rod lock or pilot check valve.
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 MGCD40X300S FAQ
It is a double acting, double rod JIS mini cylinder with a 40 mm bore and 300 mm stroke. 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. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), withstands 1.5 MPa (215 psi) proof pressure, operates from -20 to +70 C at 30-800 mm/s, has a 1/8" port, M14x1.5 rod threads on both ends, and a variable air cushion at both ends.
The variable air cushion at each end is adjusted with a needle valve to decelerate the piston smoothly, so you can run higher speeds or heavier loads without hard impact; it is not a brake, so use an external rod lock or pilot check valve if you need load holding. Because a rod exits both covers, force is equal in both directions and the rear rod end can carry a second load or a sensor flag. The MGD is a double-rod cylinder with a fixed bumper pad instead of an adjustable cushion, and the MGC is a single-rod cushioned cylinder; the -S on this model means the magnet is fitted for CMSG, DMSG, or EMSG switches.
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