1FW3 complete torque motors 1FW3 are liquid-cooled, highpole (slow running) permanent-magnet synchronous servo motors with a hollow-shaft rotor. The operating characteristics are essentially comparable to those of regular synchronous servo motors. The 1FW3 complete torque motor ships as a fully assembled, complete unit. The range includes 2 outer diameters with various shaft lengths. The stator and the rotor have a flange with centering surfaces and tapped holes at the drive end (A end) which allow them to be integrated into the customers machine. Combined with the SIMOVERT MASTERDRIVES Motion Control drive system, 1FW3 torque motors form a powerful high-performance system. The built-in encoder systems for speed and position control can be selected specifically for the application.