Airtac MG Stainless Steel Mini Air Cylinder MG25X400
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG25X400 is a genuine double acting JIS-standard round-body mini air cylinder with a Ø25mm bore and 400mm 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
- Stroke400 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 MG25X400
With a 400 mm stroke on a 25 mm bore, this MG delivers double acting power in a compact JIS round-body package: 245.3 N push and 206.1 N pull at 0.5 MPa, rising to 343.4 N at 0.7 MPa. The SUS304 stainless barrel with a hard-chrome plated 10 mm rod shrugs off damp shop air and light washdown far better than painted-steel minis, and the riveted covers keep the body short and light. At stroke end, a fixed anti-impact bumper pad softens the direction change - it decelerates the piston, it is not an adjustable air cushion.
For sizing, treat roughly 0.6 of the push force as usable work, so about 147 N at 0.5 MPa; in vertical terms that means this cylinder comfortably lifts around 12 kg with a 2:1 margin (theoretical max is 50 kgf at 1.0 MPa). Because it follows the JIS mini-cylinder standard, standard JIS brackets and I/Y rod knuckles bolt straight on. Note that a plain MG drifts when air is lost - for a held 400 mm stroke add an external rod lock or a pilot check valve. The long stroke also makes the rod more sensitive to side loads, so guide the load externally.
Airtac MG Stainless Steel Mini Air Cylinder MG25X400 Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG25X400 |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 400 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 MG25X400
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×400 | 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 MG25X400 Is Used
Bottling line pusher
The 245.3 N push at 0.5 MPa slides rows of 500 ml bottles off a conveyor; the stainless barrel tolerates frequent wipe-downs in the wet bottling zone.
Small parts lift gate
With about 12 kg vertical lift capacity at a 2:1 margin, the 400 mm stroke raises a lightweight inspection gate on a packaging machine.
Fixture clamp on a drilling jig
Around 147 N of usable clamping force holds aluminium brackets against a drilling jig stop, with the bumper pad easing the clamp-in impact.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG25X400 the Right Cylinder?
At 25 mm bore you sit mid-range: the MG20X400 pushes only 157.0 N at 0.5 MPa, while stepping up to MG32X400 buys 402.2 N - so if your load needs more than about 147 N of real work, go 32 mm. If higher speeds or heavier loads hammer the stroke ends, the cushioned MGC in 50 or 63 mm bore is the alternative. Mount with LB foot, FA flange, CB clevis or SDB pivot (with CB); this SKU has no magnet, so CMSG / DMSG / EMSG switches cannot be fitted - order the S code if you need position sensing. Ports are 1/8" (PT thread) on every MG bore.
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 MG25X400 FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa, 343.4 N push and 288.5 N pull. Theoretical maximum is 50 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s, and the port is 1/8" (PT).
Not as supplied - this SKU has no built-in magnet, so CMSG / DMSG / EMSG switches cannot detect it. Order the magnet version (S code, e.g. MG25X400S) if you need end-of-stroke sensing.
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