The SMC 11-LEJS63S7B-400B is a top-tier electric actuator designed for clean room environments, featuring a high rigidity slider type ball screw drive powered by an AC servo motor. This advanced actuator boasts a low-profile design with a reduced height dimension by approximately 36%, enhancing stability with a lower center of gravity. It supports a maximum workload of 85 kg, ensuring robust performance for demanding applications. With exceptional positioning repeatability of ±0.02 mm, it guarantees precise operations. The actuator also offers impressive acceleration and deceleration capabilities, reaching up to 20000 mm/S². Compatible with controllers such as LECSA, LECSB, LECSC, and LECSS, this actuator is a versatile and reliable choice for precision-driven tasks in controlled environments.