The SMC LEY63S4B-300BD-S2A2H 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, allowing the actuator to hold its position against a workpiece. With a positioning repeatability of ±0.02 mm or less, it ensures high precision. The actuator is built to withstand harsh environments with its IP65 dust and drip-proof specification. It is compatible with a range of controllers, including JXC51, JXC61, and others, although some models have been discontinued. The LEY63-AC Series also boasts a high output motor available in 100/200/400 W, enhancing high-speed transfer capabilities and supporting high acceleration up to 5,000 mm/S². It includes a pulse input type and an internal absolute encoder for precise operations. The actuator is compatible with various drivers, such as LECSA, LECSB(-T), and others, with some models no longer in production.