
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X170SU is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 170mm 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 robust linear motion across its 170 mm stroke. The Ø25 bore operates on a 1/8" port and conforms to ISO 6432 mounting dimensions, dropping seamlessly into standard mini-cylinder brackets and clevises. Its riveted stainless barrel and rod resist mild corrosion, offering a distinct advantage over painted alternatives in damp or washdown environments.
Equipped with fixed TPU bumper pads to decelerate the stroke end, the unit includes a built-in piston magnet for CMSG, DMSG or EMSG sensors. For practical sizing, plan for roughly 147 N of actual work at 0.5 MPa, which translates to lifting about 12.5 kg vertically with a safe 2:1 margin. The U-type back cover provides a 90-degree port orientation for tight machinery layouts.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X170SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 170 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. |
| ×170 | 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 line, using the 245.3 N thrust to push heavy cartons onto an adjacent belt at speed.
Raises lightweight industrial totes through the 170 mm travel, safely lifting components weighing up to 12.5 kg with a 2:1 safety margin.
Secures aluminium extrusions during a cutting operation, relying on the 206.1 N pull force to retract the holding jaw quickly.
When sizing this 170 mm stroke model, verify your load against the 245.3 N push and 206.1 N pull ratings at 0.5 MPa. If your application requires less force, the Ø20 bore provides 157.0 N push, while stepping up to the Ø32 yields 402.2 N. Because this is a 170 mm stroke, ensure your mounting configuration—whether LB foot, FA flange or TC trunnion—prevents excessive side loading on the M10x1.25 rod thread to avoid premature wear.
Note that the fixed TPU bumpers only soften impact near the stroke end; they do not function as an adjustable air cushion. Furthermore, a standard double-acting cylinder drifts when air pressure is lost or the valve is centred, so integrate an external rod lock or pilot-operated check valve if your system must hold a suspended load safely in place.
Quick checklist
This Ø25 bore cylinder features a 1/8" port and an M10x1.25 male rod thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, increasing to 343.4 N push and 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in magnet compatible with CMSG, DMSG and EMSG switches. The U back cover provides a 90-degree port orientation, and the body uses standard ISO 6432 mounting dimensions for easy bracket integration. Fixed TPU bumpers absorb end-of-stroke impact.
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