Airtac MG Stainless Steel Mini Air Cylinder MG25X100S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG25X100S is a genuine double acting JIS-standard round-body mini air cylinder with a Ø25mm bore and 100mm 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
- Stroke100 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionFixed anti-impact bumper pads
About the Airtac MG Stainless Steel Mini Air Cylinder MG25X100S
With a 25 mm bore pushing 245.3 N at 0.5 MPa (343.4 N at 0.7 MPa), the MG25X100S is a double acting round-body mini cylinder built to the JIS standard, sized here with a 100 mm stroke and a factory-fitted magnet. The SUS304 stainless barrel is riveted onto the covers with a hard-chrome plated 10 mm rod, so the body shrugs off washdown and damp shop air far better than painted-steel minis. Because the footprint follows the JIS mini-cylinder interface, standard brackets and I/Y rod knuckles drop straight on when you need spares or a redesign.
The magnet under the -S code lets CMSG, DMSG or EMSG switches report end-of-stroke positions without any drilling or bracket work. At the stroke ends, fixed anti-impact bumper pads soften the direction change - they decelerate the piston only and are not an adjustable air cushion. For planning: at 0.5 MPa treat roughly 147 N (about 15 kg) as the usable push, which means this cylinder lifts around 12 kg vertically once you keep a 2:1 margin. Running spec: 0.15-1.0 MPa (22-145 psi), 30-800 mm/s, air filtered to 40 um.
Airtac MG Stainless Steel Mini Air Cylinder MG25X100S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG25X100S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| 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 | 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MG Stainless Steel Mini Air Cylinder MG25X100S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×100 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
| FA / LB / CB / SDB | Mounting: FA flange, LB foot, CB clevis, SDB pivot bracket (with CB). |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, CB clevis, SDB pivot block, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MG Stainless Steel Mini Air Cylinder MG25X100S Is Used
Position-verified part ejection
On a small assembly line the fitted magnet plus a CMSG switch confirms the rod actually reached full extension before the next station indexes, catching a jammed part at 245.3 N push force.
Carton flap tucking
A packaging machine tucking flaps on 300 mm cartons needs about 100 N - the 25 mm bore delivers 147 N of practical push at 0.5 MPa with margin, and the stainless barrel tolerates humid wrapper-room air.
Lab sample press fixture
Pressing sample cups under a capping head needs repeatable light force; 206.1 N pull at 0.5 MPa retracts the tooling cleanly while the bumper pads stop the stroke ends without metal-to-metal shock.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG25X100S the Right Cylinder?
At 25 mm bore this sits mid-range: the 20 mm bore gives 157 N push at 0.5 MPa and the 32 mm bore gives 402.2 N, so pick down for light gating and up if your load needs more than about 147 N of real work. The 100 mm stroke is well inside the 500 mm standard range for this bore. Remember the MG drifts when air is lost or the valve centres - the bumpers only soften the ends - so add an external rod lock or pilot check valve if the load must stay put. The S in the code means the magnet is already fitted; order LB foot, FA flange or CB clevis mounting to suit the machine, and confirm the 1/8" port plumbing on both caps.
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 / CB / SDB) & 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 MG Stainless Steel Mini Air Cylinder MG25X100S FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa it pushes 343.4 N and pulls 288.5 N. The theoretical maximum is 50 kgf at 1.0 MPa. Bore is 25 mm, stroke 100 mm, rod 10 mm with M10x1.25 male thread, port 1/8", operating pressure 0.15-1.0 MPa (22-145 psi) and speed 30-800 mm/s.
Yes - the S in the model code means a magnet is built into the piston, so CMSG, DMSG or EMSG reed/solid-state switches clip onto the stainless barrel to signal end positions. Without the magnet option a standard MG cannot carry these switches. Note the bumpers only decelerate the stroke ends; they never hold the rod against a lost air supply.
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