The constant-torque motor and vector motor are the induction motors, which consist of the stator core, gap, and rotor core.
For the constant-torque motor, the cooling ability at low speed operation has been improved, which enables the continuous operation with the constant-torque at the low-speed operation.
The vector motor is a dedicated motor for the vector inverter. The encoder is provided as standard, which enables the continuous operation with the constant-torque at the low-speed operation.
The rotor of the servo motor (synchronous type) consists of permanent magnets, and the stator consists of the coil to which current is applied.