The SMC LEJS63S3A-1500-R5A1H is a high-performance electric actuator from the LEJS-AC Series, designed for precision and efficiency. This actuator features a high rigidity slider type ball screw drive powered by an AC servo motor, ensuring reliable and smooth operation. Its low-profile design reduces the height dimension by approximately 36%, enhancing stability with a lower center of gravity. Capable of handling a maximum workload of 85 kg, it offers exceptional positioning repeatability of ±0.02 mm, making it ideal for applications requiring high precision. The actuator supports rapid movements with a maximum acceleration/deceleration of 20000 mm/S². Additionally, it meets clean specifications compliant with ISO Class 4 (Class 10) standards, ensuring suitability for cleanroom environments. Compatible with a range of drivers, including LECSA, LECSB(-T), LECSC(-T), LECSS, LECSS-T, LECSN-T, and LECY, this actuator provides versatile integration options for various industrial applications. Note that some compatible drivers have been discontinued, including LECSB-S, LECSC-S, and LECSS-S.