The SMC LEJSH40S2B-400-S2A1H LEJS-AC Series Electric Actuator is a high-performance solution designed for precision and efficiency. Featuring a high rigidity slider type ball screw drive and an AC servo motor, this actuator is engineered for demanding applications. 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 ensures reliable performance with a positioning repeatability of ±0.02 mm. The actuator supports rapid operations with a maximum acceleration/deceleration of 20000 mm/S². For environments requiring cleanliness, it complies with ISO Class 4 (Class 10) standards, specifically in the 11-LEJS model. It is compatible with a range of drivers, including LECSA, LECSB(-T), LECSC(-T), LECSS, LECSS-T, LECSN-T, LECY, and several discontinued models, ensuring versatile integration into existing systems.