Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25S
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25S is a genuine double acting, double rod + cushion 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 + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25S
The AirTAC MGCD40X25S is a double acting, double-rod JIS round-body mini cylinder with a 40 mm bore and 25 mm stroke. A 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 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 the two rod ends move together, the rear rod gives you an anti-rotation point, a stop flag, or a second load path without extra hardware. A variable air cushion at both ends decelerates the piston smoothly, letting this 40 mm bore handle higher speeds and heavier loads than an unbuffered mini cylinder.
Construction follows the JIS mini-cylinder footprint: a riveted SUS304 stainless barrel with a hard-chrome plated 16 mm rod for corrosion resistance and long seal life. The two-way lubricant-storing piston seal reduces maintenance intervals. Operating range is 0.15-1.0 MPa (22-145 psi) with a proof pressure of 1.5 MPa (215 psi), temperature from -20 to +70 C, and speed from 30 to 800 mm/s on air filtered to 40 um. The fitted magnet (S code) accepts CMSG, DMSG, or EMSG switches for end-of-stroke detection. For a realistic working load, size around 60 percent of the push force: roughly 32 kgf horizontal, or about 26 kg for a safe vertical figure at 0.5 MPa.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25S Technical Specifications
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25S |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 MGCD40X25S
| MGCD | JIS round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 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 MGCD Stainless Steel Mini Air Cylinder MGCD40X25S Is Used
High-speed anti-rotation transfer
The through-rod resists load rotation while the variable air cushion at both ends absorbs the stop at speeds up to 800 mm/s, moving fixtures or parts with about 527.8 N of equal force each way.
Twin-load press with soft stop
Both rod ends carry a small pressing or marking tool, and the adjustable cushion gives a smooth, non-shock bottom of stroke - useful for light forming or staking in the 40 mm force class.
Rear-switch slide
The rear rod end carries a switch flag or position stop while the magnet reads CMSG/DMSG/EMSG sensors, giving a compact reciprocating slide with cushioned ends and no external brackets.
Is the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD40X25S the Right Cylinder?
Choose the MGCD40X25S when you need equal force in both directions, a through-rod for mounting or flagging, and adjustable cushioning at both ends in a compact 40 mm bore. If you only need single-direction push with a cushion, the single-rod MGC is simpler; if you want a double rod with a fixed bumper instead of an adjustable cushion in bores 20-40, look at the MGD. The MGCD is the cushioned double-rod option available up to 63 mm bore. Mount with the LB foot or FA flange and use I or Y rod knuckles on the load; SDB and CB mounts are not offered. The fitted magnet supports CMSG/DMSG/EMSG switch detection. Keep side loads off the rod on strokes toward the 500 mm maximum standard stroke, and note that the air cushion only decelerates the stroke ends - it does not lock the piston, so add an external rod lock or pilot check valve if the load must be held on air loss.
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 MGCD40X25S FAQ
Because both sides of the piston see the rod-side area, 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. 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, and the fluid is air filtered to 40 um. Ports are 1/8" and the rod thread is M14x1.5 at both ends.
The cushion at each end is an adjustable air chamber that decelerates the piston near the stroke end, so you can tune the stop for higher speeds or heavier loads. It is not a bumper pad (that is the MGD, which is a double-rod cylinder with fixed bumpers in bores 20-40) and not a lock: the cylinder does not hold its load on air loss, so use an external rod lock or pilot check valve for that. The MGC is the single-rod cushioned version. The fitted magnet on this -S model accepts CMSG, DMSG, or EMSG switches.
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