The SMC LEJSH40S2B-900-R2A1H LEJS-AC Series Electric Actuator is a high-performance solution designed for precision and efficiency. Featuring a high rigidity slider type ball screw drive, this actuator is 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. With a maximum acceleration/deceleration rate of 20000 mm/S², it delivers rapid and responsive performance. The actuator meets clean specifications, complying with ISO Class 4 (Class 10) standards, ensuring suitability for cleanroom environments. It is compatible with a range of drivers, including LECSA, LECSB(-T), LECSC(-T), LECSS, LECSS-T, LECSN-T, LECY, and several discontinued models, providing flexibility in integration.