Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X300S
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X300S is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø25mm 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.
- BoreØ25 mm
- Stroke300 mm
- Port size1/8"
- Acting typeDouble acting, double rod + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X300S
The AirTAC MGCD25X300S is a double acting, double rod JIS mini cylinder with a 25 mm bore and 300 mm stroke, fitted with a variable air cushion at both ends. Because a rod exits both covers with the same M10x1.25 male thread, the piston works on the rod-side area in each direction, so the output force is equal both ways: about 206.1 N at 0.5 MPa and 288.5 N at 0.7 MPa, with a theoretical maximum of 42 kgf at 1.0 MPa. The adjustable cushion decelerates the piston smoothly at each end of the 300 mm travel, allowing higher speeds and heavier loads than an unbuffered cylinder, while the rear rod end can carry a stop flag, position flag or a second load.
Construction follows the JIS round-body mini format: a riveted SUS304 stainless barrel with a hard-chrome plated 10 mm rod, a two-way lubricant-storing piston seal, and 1/8" ports. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a proof pressure of 1.5 MPa (215 psi), temperature range -20 to +70 C, and speed range 30-800 mm/s on air filtered to 40 um. The fitted magnet (the S code) allows CMSG, DMSG or EMSG switches to be mounted for end-of-stroke detection. As a buyer insight, the usable working load at 0.5 MPa is roughly 0.6 of the push force, about 12.6 kgf, or roughly 10.5 kgf as a safe vertical load.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X300S Technical Specifications
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X300S |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 300 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 (Ø25mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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 MGCD25X300S
| MGCD | JIS round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 25 | 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 MGCD25X300S Is Used
High-speed anti-rotation transfer
The through rod keeps the load from rotating while the variable air cushion at both ends absorbs the deceleration, letting the 25 mm bore shuttle parts at up to 800 mm/s over the full 300 mm stroke with equal 206.1 N force in each direction.
Twin-load press with soft stop
Both rod ends can carry small pressing or marking tools, each seeing the same 288.5 N at 0.7 MPa, while the adjustable cushion gives a smooth, non-shocking stop at the bottom of the stroke.
Rear-switch slide with position flag
The rear rod end carries a stop or position flag detected by CMSG, DMSG or EMSG switches (magnet fitted), turning the 300 mm stroke into a cushioned slide with intermediate position feedback.
Is the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD25X300S the Right Cylinder?
Size the MGCD25 by force, not bore: it delivers 206.1 N (about 21 kgf) each way at 0.5 MPa, so apply the 0.6 rule of thumb and keep the working load near 12 kgf; step up to MGCD32 (345.6 N) or MGCD40 (527.8 N) if you need more, or down to MGCD20 (131.9 N) for lighter duty. Choose this model when you need equal force in both directions, anti-rotation guidance, or a rear rod end for a flag or second load, together with smooth adjustable deceleration at both ends of the stroke. If you need a double-rod cylinder at bore 20-40 with a fixed bumper instead of an adjustable cushion, look at the MGD; for a single rod with a variable cushion, the MGC is the equivalent. Mounting is LB foot or FA flange, with I and Y rod knuckles available (no CB or SDB); the S in this model code means the magnet is already fitted for CMSG, DMSG or EMSG switches. At 300 mm stroke this is the maximum standard stroke for bore 25, so support the rod or guide the load carefully to avoid side loading on long travels.
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 MGCD25X300S FAQ
Because it is a double rod cylinder, the force is equal in both directions: 206.1 N at 0.5 MPa and 288.5 N at 0.7 MPa, with a theoretical maximum of 42 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, on air filtered to 40 um. The bore is 25 mm with a 10 mm rod, M10x1.25 male thread on both rod ends, 1/8" ports, and 300 mm stroke, which is the maximum standard stroke for this bore.
The MGCD25X300S has an adjustable air cushion at both ends that decelerates the piston smoothly near each end of the stroke, so it can run at higher speeds with heavier loads; it is a deceleration feature, not a lock, so use an external rod lock or pilot check valve if the load must be held on air loss. Unlike the MGD, which is a double-rod cylinder with a fixed bumper pad, the MGCD cushion is adjustable. Unlike the MGC, which is a single-rod cushioned cylinder with a larger push force than pull force, the MGCD's through rod gives equal force both ways. The fitted magnet also allows CMSG, DMSG or EMSG switches for position detection.
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