
The AirTAC Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI20X100SCMLB is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 100mm 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.
This B52-MI20X100SCMLB is the copper-free (copper-prohibited) build of AirTAC's MI20X100SCMLB, a double-acting round-body mini cylinder with a stainless-steel barrel and rod. The B52- prefix means no copper or copper alloys are used, making it suitable for ammonia systems and certain battery, electronics, and chemical plants. Please confirm the exact material substitutions with us, as they are not detailed in our data.
The 20mm bore delivers 157 N push and 131.9 N pull at 0.5 MPa, and 219.8 N push at 0.7 MPa. The fixed TPU bumper pads soften stroke-end impact, decelerating the piston but not acting as a lock. With its ISO 6432 mounting interface, this cylinder drops into standard mini brackets and clevises, simplifying design and spares. The 1/8" port and M8x1.25 male rod thread are standard for this bore size.
| Model | Airtac B52-MI Copper-Free Stainless Steel Mini Cylinder B52-MI20X100SCMLB |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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.
The copper-free build suits ammonia systems where copper alloys corrode. With 157 N push at 0.5 MPa, it can actuate small refrigeration valves in cold storage plants, avoiding copper contamination.
In battery production, copper-free components prevent contamination. This cylinder's 131.9 N pull force can clamp small cell holders during welding or testing, with the stainless build resisting electrolyte splash.
On PCB assembly lines, the 100mm stroke lifts a stop gate to release boards. The 157 N push handles light gates, while the stainless rod and barrel resist flux fumes and mild washdowns.
For sizing, the next bore down is 16 (100.5 N push at 0.5 MPa) and the next up is 25 (245.3 N push at 0.5 MPa). This 100mm stroke model suits applications needing moderate force in a compact envelope. The -S magnet enables CMSG, DMSG, or EMSG switches for position sensing. The CM round back cover and LB foot mounting are already specified. Note that a plain cylinder does not hold its load when air is lost or the valve is centred; for a held load, use an external rod lock or pilot-operated check valve. For long strokes, consider side-load and rod-bending effects.
Quick checklist
At 0.5 MPa, push is 157 N and pull is 131.9 N. At 0.7 MPa, push is 219.8 N and pull is 184.7 N. The theoretical maximum force is 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, with proof pressure at 1.5 MPa. Speed range is 30-800 mm/s.
B52- marks the copper-free (copper-prohibited) version of MI20X100SCMLB, for lines where copper and copper alloys are not permitted. The exact material substitutions should be confirmed with us. The -S magnet is present, so you can use CMSG, DMSG, or EMSG switches. Without the -S, no sensor can be mounted.
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