SMC manufactures two of the most common types of rotary actuators: Rack and Pinion and Vane style. In addition, we offer Combination models combining compact cylinders with rotation and rotary gripper combinations. When the application calls for rotational motion less than one revolution, rotary actuators can mount right at the equipment joint without taking up space with long stroke lengths, which would be required to do the same job with a linear cylinder. SMC's rotary actuators can achieve arc lengths of 90, 180, 190, or even 270 degrees, depending on the configuration.