Abstract: A method and apparatus for temperature controlled pre-spinning of rotor forgings is provided. The apparatus includes a spin pit configured to receive a rotor forging; a drive unit and a transmission assembly operable to spin the rotor forging at a high rotational speed within the spin pit; a coolant pipe configured to extend through a central bore of the rotor forging; a bore coolant assembly operable to circulate coolant through the coolant pipe; a vacuum pump operable to create a vacuum in the spin pit; a plurality of rim heater units installed within the spin pit around a circumference of the rotor forging; and a controller operable to monitor and control a spin speed, a spin duration, a vacuum pressure and/or a temperature of the rotor forging at different areas of the rotor forging.