The SMC LEY63S4B-500-R5A21 is a versatile electric actuator from the LEY63-AC Series, designed for precision and efficiency. This rod type AC servo motor features a long stroke capability of up to 500 mm, allowing for extensive reach in various applications. It offers flexible mounting options with direct mounting in three directions and bracket mounting in three types, ensuring adaptability to different setups. The actuator supports auto switch mounting and provides advanced speed control and positioning with a maximum of 64 points, catering to both positioning and pushing control needs. It can securely hold the actuator with the rod pushing against a workpiece, maintaining a positioning repeatability of ±0.02 mm or less. Built to withstand challenging environments, it boasts a dust and drip proof IP65 specification. Compatible with a range of controllers and drivers, including JXC51, JXC61, and LECSA, this actuator is equipped with a high output motor available in 100, 200, or 400 W, enhancing high-speed transfer and acceleration capabilities up to 5,000 mm/S². Additionally, it features a pulse input type and an internal absolute encoder, ensuring precise and reliable operation.