SMC MSQB50A Rotary Cylinder

SMC MSQB50A is a 50 mm rack-and-pinion rotary table actuator in the MSQ series, delivering 0°–190° rotation for precise indexing of fixtures and workpieces in automation cells. The basic MSQB50A configuration features a double-shaft output and a mounting face with a rubber/urethane cushion to dampen impact and improve repeatability under high-cycle use. It operates at a maximum supply pressure of 0.5 MPa (5 bar) and uses Rc1/8 port threading for pneumatic connections, making it compact and easy to integrate in tight spaces. The MSQB50A supports the 50 mm table size with a nominal rotation of 190 degrees, and variants exist such as MSQB50A-M9NL-XF that add an auto-switch option for sensors and feedback. Common applications include rotary indexing in assembly lines, fixtures for machining or inspection, and test rigs in electronics, packaging, and automotive contexts. As part of the MSQ family, the MSQB50A emphasizes reliable rack-and-pinion rotation with a built-in table feature and configurable options to suit automated assembly tasks.