Cooling Methods
Electric spindles are cooled by three primary methods; Fan, Compressed Air & Chilled Liquid. The more efficient methods allow for higher power ratings and more severe applications in smaller packages.
FAN COOLED
Fan cooled spindles are available in two versions: Mechanical Fan and Electric Fan. The mechanical fan mounts to the spindle shaft and rotates the same speed as the spindle. The electric fan allows for constant CFM regardless of the spindle speed and can also cool the spindle while it is not running. The electric fan also allows for quiet operation. Fan cooled spindles are the most popular and economical but least efficient.
COMPRESSED AIR
Compressed Air cooled spindles are machined from a solid aluminum billet or tube. This housing style provides increased stiffness and vibration
dampening. The high degree of cooling achieved for the compressed air circuit allows for higher power output with an improved amount of heat dissipation from the rotor/stator unit. Compressed air cooled spindles are designed for applications involving high duty cycles and harsh environments. Air consumption rates depend on the spindle size and design.
CHILLED LIQUID
Liquid Cooled spindles are designed for use with a closed loop chiller system. They are machined from a solid aluminum billet or tube. This housing style provides increased stiffness and vibration dampening. The high degree of cooling achieved by the chilled liquid circuit allows for the highest power output of any spindle cooling method. Liquid cooled spindles are designed for applications involving high duty cycles and harsh environments.
