PURPOSE: A spindle motor is provided to solve a shaft shaking problem by effectively extending a shaft supporting unit for supporting a rotary shaft by forming a space unit. CONSTITUTION: A rotator(20) includes a rotor case(21) installed on a rotary shaft(10). A stator(30) includes a bearing holder(32). A bearing(31) supporting the rotary shaft is embedded in a bearing holder. An armature(40) includes a core(41) included in the bearing holder. A space unit(50) accommodates the bearing and the bearing holder. The space unit is formed between the rotary shaft and the rotor case.
