
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X115SCM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 115mm 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.
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work in a compact footprint. The 25 mm bore pairs with a 115 mm stroke, utilizing a 10 mm piston rod and 1/8" porting. Its stainless barrel and rod naturally resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. Fixed TPU bumper pads absorb the impact at stroke extremes, decelerating the piston smoothly without the tuning hassle of an adjustable cushion.
Because the Ø25 size adheres to ISO 6432 mounting dimensions, it drops directly into standard mini-cylinder brackets and clevises for easy design swaps. The built-in magnet (-S) supports CMSG, DMSG, and EMSG position switches, while the CM round end cover tailors the rear mounting profile. For practical sizing, plan for a safe working load of about 147 N, which easily lifts a 12.5 kg part vertically with a 2:1 safety margin.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X115SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 115 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.
| 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.
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×115 | 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.
Actuates a routing flap on a packaging conveyor, using the 245 N push force to reliably redirect heavy cartons onto secondary tracks.
Raises 12 kg tote bins between conveyor tiers in a logistics hub, safely operating within the cylinder's calculated 2:1 vertical lift margin.
Pushes processed specimen trays out of a damp testing chamber, leveraging the stainless steel construction for reliable washdown resistance.
When sizing this 25 mm bore, compare it directly against its neighbors: a 20 mm bore yields 157 N of push at 0.5 MPa, while stepping up to a 32 mm bore provides 402 N. This model hits a strong middle ground for 115 mm travel tasks. If your valve centers or air supply drops, know that a standard MI piston will drift and cannot hold a load—the bumpers only soften the end of stroke, so add an external rod lock or pilot check valve if position holding is required.
The CM round back cover offers a specific rear profile for your mounting layout. To utilize the internal magnet for sensing, pair the -S option with CMSG, DMSG, or EMSG switches. At 115 mm of travel, keep an eye on side loading; ensuring axial rod alignment will prevent premature seal wear and rod bending over the extended length.
Quick checklist
This 25 mm bore cylinder features a 1/8" air port and an M10x1.25 male 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 force of 50 kgf at 1.0 MPa.
No, a standard MI cylinder will drift if air is lost or the valve is centered. The fixed TPU bumper pads only decelerate the piston near the stroke end and do not act as a brake. For vertical load holding, you must use an external rod lock or a pilot-operated check valve.
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