Airtac MG Stainless Steel Mini Air Cylinder MG25X125S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG25X125S is a genuine double acting JIS-standard round-body mini air cylinder with a Ø25mm bore and 125mm 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
- Stroke125 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 MG25X125S
With a 25 mm bore and 125 mm stroke, this MG delivers 245.3 N of push and 206.1 N of pull at 0.5 MPa, rising to 343.4 N at 0.7 MPa - double acting, so air drives the rod in both directions. The riveted round body pairs a SUS304 stainless barrel with a hard-chrome plated 10 mm rod, a combination that shrugs off washdown and damp shop air far better than painted-steel minis. Because it follows the JIS mini-cylinder standard, standard JIS brackets and rod knuckles drop straight on.
The fitted magnet (the S in the code) lets you mount CMSG, DMSG or EMSG switches for end-of-stroke signalling without any later modification. At stroke ends, fixed anti-impact bumper pads soften the direction change - they decelerate only, they are not an adjustable cushion. As a rule of thumb, plan on roughly 147 N (about 15 kg of vertical lift) of usable work at 0.5 MPa rather than the full rating, which gives a comfortable margin on real parts.
Airtac MG Stainless Steel Mini Air Cylinder MG25X125S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG25X125S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 125 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 MG25X125S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×125 | 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 MG25X125S Is Used
Carton push-off on packaging lines
Around 245 N of push at 0.5 MPa slides filled cartons off a conveyor lane; the stainless barrel tolerates frequent wipe-downs in food-grade areas.
Position-verified clamping fixture
The built-in magnet feeds CMSG or DMSG switch signals to the PLC so a machining fixture confirms clamp and unclamp on every cycle.
Small-part press and eject station
With about 15 kg of practical vertical lift at 0.5 MPa, the 125 mm stroke ejects moulded caps or pressed bushings from a nest at up to 800 mm/s.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG25X125S the Right Cylinder?
At 0.5 MPa this bore pushes 245.3 N; the smaller MG20 offers 157.0 N if your load is lighter, while the MG32 steps up to 402.2 N when you need more muscle. If your cycle runs fast or carries heavy side loads, the cushioned MGC in the same bore family gives adjustable deceleration instead of fixed bumpers. Remember the MG drifts when air is removed - for a load that must stay put, add an external rod lock or a pilot check valve. The 125 mm stroke is well inside the 500 mm standard range, and the -S magnet means CMSG / DMSG / EMSG switches work out of the box; choose LB foot, FA flange, CB clevis or SDB pivot mounting to suit the machine frame.
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 MG25X125S 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. The theoretical maximum is 50 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, and speed runs 30-800 mm/s.
The S means a piston magnet is fitted, so CMSG, DMSG or EMSG reed switches can be clipped on for position feedback - a plain MG25 without the S cannot take a sensor. Air connections are 1/8" ports on the covers, with a male M10x1.25 rod thread, and mounting options include LB foot, FA flange, CB clevis and SDB pivot.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MG Stainless Steel Mini Air Cylinder MG25X125S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.