HDM – High Density series of low inertia compact brushless servomotors, ideal for applications where space is a premium and rapid acceleration and deceleration is required

HR/HRS – High Response and High Response Short series of low inertia brushless AC servomotors, ideal for applications where rapid acceleration and deceleration is required

HJ – High Inertia brushless AC servomotors, ideal of application where high stability at low speed is required