SMC MSQB20A Pneumatic Rotary Actuator Cylinder

The SMC MSQB20A is a compact, integrated rotary table and pneumatic actuator from the MSQ series, combining a rack‑and‑pinion rotary table with a basic MSQ actuator to deliver a 190° sweep in a single unit. Size 20 with an 18 mm bore, the MSQB20A carries suffix A for an adjuster bolt and is specified as a basic precision (MSQ B) configuration that supports direct load mounting. It offers four pneumatic connections and port options including M5 (for sizes such as 10 and 20) or Rc1/8 (larger sizes); for this model, M5 is the common port type. Auto switch capability is available but not mandatory; when included, the package provides two magnetic switches with 0.5 m lead wires. Operating pressure ranges from 0.1 to 1.0 MPa using compressed air that is non‑lubricated; medium temperature is 0–60 °C and ambient temperatures range 0–60 °C. Direct‑mount loads and compact footprint make the MSQB20A suitable for precise rotary positioning tasks in automation and fixture setups where a single integrated table/actuator unit is preferred.