TORQUE MOTOR IN SPECIAL DESIGN INTERNAL PRECISION AND POWER COOLER; OUTER DIAMETER 502MM; STATOR LENGTH 130MM; PLEASE TAKE NOTE THAT WHEN USING DIRECT MOTORS N FORK HEADS FOR MACHINE TOOLS OR ROBOTS, A LICENSE MAY BE REQUIRED UNDER U.S. PATENT US5584621 AND THE WORLDWIDE PROPERTY RIGHTS INVOLVED IN CONNECTION WITH IT