Airtac MG Stainless Steel Mini Air Cylinder MG25X300S
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG25X300S is a genuine double acting 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
- Rod threadM10×1.25
- CushionFixed anti-impact bumper pads
About the Airtac MG Stainless Steel Mini Air Cylinder MG25X300S
With a 25 mm bore and a 300 mm stroke, this MG series cylinder delivers double acting power in a compact round body: about 245.3 N push and 206.1 N pull at 0.5 MPa, rising to 343.4 N at 0.7 MPa. It follows the JIS mini-cylinder standard, so standard JIS brackets and rod knuckles bolt straight on without custom machining - a real advantage when you need a spare or a drop-in replacement. The -S in the code means a magnet is built into the piston, so CMSG, DMSG or EMSG switches can be clipped on for end-of-stroke signalling.
The barrel is SUS304 stainless steel riveted onto the front and back covers, paired with a hard-chrome plated 10 mm rod, which shrugs off moisture and mild washdown far better than painted-steel minis. A fixed anti-impact pad at each stroke end softens direction changes - it decelerates only and is not an adjustable cushion. For planning: at 0.5 MPa expect roughly 147 N of usable push (about 0.6 of the rating), which lifts around 15 kg vertically with a 2:1 margin. Operating range is 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
Airtac MG Stainless Steel Mini Air Cylinder MG25X300S Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG25X300S |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 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 MG25X300S
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MG25X300S Is Used
Bottling line gate actuator
The 300 mm stroke swings or slides a reject gate across a bottling conveyor, with the built-in magnet feeding a CMSG switch to confirm gate position before the next bottle passes.
Carton push-off on case packers
About 245 N of push at 0.5 MPa slides filled cartons off a case-packer infeed, and the stainless barrel copes with the damp, spill-prone zone around glue stations.
Semiconductor tote lift-assist
With roughly 15 kg of safe vertical lift at 0.5 MPa, the cylinder raises wafer totes between a magazine loader and a workbench, the fixed bumper pads damping each touchdown.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG25X300S the Right Cylinder?
At 245.3 N push (0.5 MPa), the MG25X300S sits between the MG20 (157 N) and the MG32 (402.2 N): step down to MG20 for lighter tooling clamps, or up to MG32 when parts approach 25 kg. The 300 mm stroke is within the 500 mm standard range for this bore, so no made-to-order surcharge applies. Note that if air is lost the rod drifts freely - the bumper pads only soften the stroke end, so add an external rod lock or pilot check valve for held loads. Choose LB foot, FA flange or CB clevis mounting to suit the frame, and keep the -S magnet if position sensing is planned.
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 MG25X300S FAQ
At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N; at 0.7 MPa those figures rise to 343.4 N push and 288.5 N pull. The theoretical maximum is 50 kgf at 1.0 MPa. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), at speeds of 30-800 mm/s and temperatures from -20 to +70 C.
Yes. The S in the model code means a piston magnet is factory-fitted, so AirTAC CMSG, DMSG or EMSG reed/electronic switches clamp directly onto the SUS304 barrel to signal rod position. Without the magnet option a standard MG cannot carry these switches.
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 MG25X300S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.