Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SR
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SR is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 300mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ25 mm
- Stroke300 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SR
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles demanding mid-range tasks. The Ø25 mm bore uses a 1/8" port and a 300 mm stroke. Its stainless barrel and piston rod resist mild corrosion, making it superior to painted alternatives in damp or washdown settings. The built-in magnet (-S) supports CMSG, DMSG and EMSG sensors for position detection.
Plan for roughly 147 N of actual work at 0.5 MPa to maintain a safe margin. This translates to lifting about 12.5 kg vertically with a 2:1 safety factor, helping you match the cylinder to real part weights. The riveted construction keeps the body compact, while fixed TPU bumper pads absorb end-of-stroke impacts. The R back cover features an axial-in port orientation for tidy plumbing in tight spaces.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SR Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SR |
|---|---|
| Series | MI ISO 6432 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 TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G.
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 MI25~40 Stainless Steel Mini Cylinder MI25X300SR
| MI | ISO 6432 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. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SR Is Used
Package Diverting Gate
Actuates a routing flap on a packaging line, using the 245.3 N push force to redirect heavy cartons reliably at high speed.
Vertical Parts Elevator
Lifts components weighing up to 12.5 kg between conveyor tiers, leveraging the 300 mm stroke and a 2:1 safety margin.
Pneumatic Clamping Arm
Extends a holding fixture on an assembly station, where the 1/8" port delivers adequate flow for rapid 30-800 mm/s cycling.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SR the Right Cylinder?
When sizing this model, the smaller Ø20 bore provides 157.0 N of push at 0.5 MPa, while the larger Ø32 bore offers 402.2 N if you need more power. This 300 mm stroke is well within the 500 mm maximum standard stroke for the Ø25 bore. For a stroke this long, minimize side loading to prevent rod bending and premature seal wear. The ISO 6432 mounting interface allows easy integration with standard mini-cylinder brackets and clevises.
Because the standard MI lacks a locking mechanism, the piston will drift if air pressure is lost or the valve is centered. The TPU bumpers only decelerate the stroke end and cannot hold a load. To suspend a vertical load safely, add an external rod lock or a pilot-operated check valve to your circuit.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
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 Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SR FAQ
This Ø25 mm bore cylinder features a 1/8" port and a male M10x1.25 rod thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical maximum of 50 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in piston magnet compatible with CMSG, DMSG and EMSG switches. For impact absorption, it relies on fixed TPU bumper pads that decelerate the piston at stroke ends; it does not have adjustable air cushioning like the MIC variant.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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