The spline sleeve is the function of transmitting mechanical torque.

The electromagnetic brake is composed of a slot plate with a winding coil, an armature, a spline sleeve, a compression spring installed in the spring hole of the slot plate and contacting one end surface of the armature, and a rotor located between the armature and the spline sleeve.

The electromagnetic brake is composed of a slot plate with a winding coil, an armature, a spline sleeve, a compression spring installed in the spring hole of the slot plate and contacting one end surface of the armature, and a rotor located between the armature and the spline sleeve.