
The AirTAC Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI25X125SCM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 125mm 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.
The B52-MI25X125SCM delivers 245.3 N of push force at 0.5 MPa from its 25 mm bore, making it a solid choice for light assembly tasks. This round-body, double-acting mini cylinder uses a stainless-steel barrel and rod, offering mild corrosion resistance for damp or washdown environments.
The B52- prefix marks AirTAC's copper-free (copper-prohibited) build of the MI25X125SCM, suitable for lines where copper alloys are not permitted, such as ammonia systems. The fixed TPU bumper pads soften stroke-end impact, and the built-in magnet enables CMSG, DMSG, or EMSG sensors for position detection. The 1/8" port keeps installation straightforward.
| Model | Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI25X125SCM |
|---|---|
| Series | MI ISO 6432 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 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. |
| ×125 | 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.
Use the 245 N push force to actuate locating pins or clamp small parts in a benchtop assembly jig for electronics or medical devices.
In ammonia or chemical processing lines where copper is prohibited, this copper-free build operates safety interlocks or valve positioners on access panels.
Drive a 125 mm stroke pusher to divert defective battery cells off a conveyor into a reject bin, using the 12.5 kg vertical-lift equivalent with margin.
For a smaller option, the 20 mm MI series provides 157 N push at 0.5 MPa; for more force, the 32 mm MI series pushes 402.2 N. This 125 mm stroke unit is within the standard 500 mm maximum for 25 mm bores. The CM round back cover provides a specific rear-cover style for mounting flexibility.
Remember, this cylinder does not hold its load if air pressure is lost or the valve is centred - the piston will drift. For vertical lifting or holding applications, pair it with an external rod lock or a pilot-operated check valve. The -S magnet allows sensor mounting, and the ISO 6432 mounting interface fits standard mini-cylinder brackets.
Quick checklist
At 0.5 MPa, push force is 245.3 N and pull is 206.1 N. At 0.7 MPa, push is 343.4 N and pull is 288.5 N. Theoretical maximum force is 50 kgf at 1.0 MPa. Safe working load is about 147 N at 0.5 MPa.
B52- is AirTAC's copper-free (copper-prohibited) version of the MI25X125SCM, for lines where copper alloys are banned. The stainless-steel barrel and rod resist mild corrosion. The exact material substitutions should be confirmed with us. This model also features a built-in magnet for CMSG/DMSG/EMSG sensors.
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