The SMC LEYH63S8L-100L-R5B21 is a versatile electric actuator from the LEY63-AC Series, designed for precision and efficiency. This rod type AC servo motor is equipped with a 24 VDC servo motor, offering a long stroke capability of up to 500 mm. It features flexible mounting options with direct mounting in three directions and bracket mounting in three types. The actuator supports auto switch mounting and provides advanced speed control and positioning with a maximum of 64 points. Users can choose between positioning or pushing control, with the ability to hold the actuator in place while the rod pushes against a workpiece. It boasts a high positioning repeatability of ±0.02 mm or less and is built to withstand harsh environments with its IP65 dust and drip-proof specification. Compatible with a range of controllers and drivers, including JXC51, JXC61, and LECSA, this actuator is ideal for applications requiring high output motors (100/200/400 W), improved high-speed transfer, and high acceleration compatibility up to 5,000 mm/S². Additionally, it includes an internal absolute encoder for precise operations.