Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI12X25SU
The AirTAC Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI12X25SU is a genuine double acting round-body mini air cylinder with a Ø12mm bore and 25mm stroke, M5×0.8 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.
- BoreØ12 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM6×1.0
- CushionFixed TPU bumper pads
About the Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI12X25SU
With a 56.5 N push force at 0.5 MPa, this 12 mm bore unit is built for light, precise actuation in compact spaces. The B52- prefix marks AirTAC's copper-free (copper-prohibited) construction, making it suitable for lines where copper alloys are not permitted, such as ammonia systems or certain battery and electronics plants.
The stainless-steel barrel and rod resist mild corrosion and washdown, a real advantage over painted-steel minis in damp or food areas. It uses the ISO 6432 mounting interface for 8-25 bores, so it drops into standard mini-cylinder brackets and clevises. The fixed TPU bumper pads soften stroke-end impact, and the built-in magnet (-S) enables CMSG, DMSG, or EMSG switches for position sensing.
Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI12X25SU Technical Specifications
| Model | Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI12X25SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø12 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 250 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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI12X25SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 12 | Bore size in mm. |
| ×25 | 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 B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI12X25SU Is Used
Small-Part Ejection
Use the 56.5 N push force to eject small plastic components from an injection mold cavity. The compact 12 mm body fits between core pins, and the stainless rod resists the occasional coolant splash.
Lab Valve Actuation
In a chemical analysis rig, this copper-free cylinder actuates a small pinch valve on a sample line. The B52- build avoids copper contamination in sensitive media, and the 30-800 mm/s speed range suits precise metering tasks.
Label Applicator Press
Drive a light tamping head on a labeling machine to press labels onto small vials. The 25 mm stroke matches the label height, and the TPU bumpers prevent harsh impact at the end of each cycle.
Is the Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI12X25SU the Right Cylinder?
When sizing, compare this 12 mm bore against the 10 mm (39.3 N push) and 16 mm (100.5 N push) options at 0.5 MPa. For a 25 mm stroke, the M6x1.0 male rod thread and M5x0.8 port are fixed by the bore size. The U back cover provides a 90-degree rear port orientation, which can simplify tight plumbing layouts.
Remember that this is a double-acting cylinder-air extends and retracts the rod. It does not hold its position if air pressure is lost or the valve is centred; the piston will drift. For a held load, add an external rod lock or a pilot-operated check valve. The fixed TPU bumpers only decelerate the stroke end, they are not a locking mechanism.
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 B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI12X25SU FAQ
At 0.5 MPa, the push force is 56.5 N and the pull force is 42.4 N. At 0.7 MPa, push is 79.1 N and pull is 59.4 N. The theoretical maximum force is 11.5 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa, with a proof pressure of 1.5 MPa.
B52- is AirTAC's copper-free (copper-prohibited) build of the MI12X25SU, designed for lines where copper and copper alloys are not allowed. The exact material substitutions should be confirmed with us. This unit has a built-in magnet (-S), so it works with CMSG, DMSG, or EMSG switches. Without the -S, no sensor can be mounted.
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Covers non-human-caused product damage.
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