The SMC LEJS40S6A-1000B-S5B1H is a high-performance electric actuator from the LEJS-AC Series, designed with a high rigidity slider type ball screw drive and powered by an AC servo motor. This actuator boasts a low-profile design with a reduced height dimension by approximately 36%, enhancing its stability with a low center of gravity. It can handle a maximum workload of 85 kg, ensuring robust performance for demanding applications. With a remarkable positioning repeatability of ±0.02 mm, it delivers precise and reliable operation. The actuator supports a maximum acceleration and deceleration of 20000 mm/S², making it suitable for high-speed applications. Additionally, it meets clean specifications, complying with ISO Class 4 (Class 10) standards, specifically for the 11-LEJS model. The actuator is compatible with a range of drivers, including LECSA, LECSB(-T), LECSC(-T), LECSS, LECSS-T, LECSN-T, LECY, and several discontinued models, offering flexibility in integration.