Key to the product’s design specification was a motor that would deliver consistently high torques to drive the cutting heads of the tool through several layers of cast material. It was also critical for the motor to be compact, lightweight, and capable of extended battery operation.
To meet these requirements, BEI Kimco provided the High Performance Size 23 BLDC Motor with customized housing and shaft. The Standard High Torque Density Design (P/N DIH23-30-BFNA) delivers continuous power at levels approaching 1 HP continuous at speeds up to 20 K RPM. Its compact size of just 2.3 in. O.D x 3.0 in. L with operating efficiencies in excess of 85% resulted in a highly satisfactory motor solution, a motor powerful enough to drive the device blades, yet small enough to support the ergonomics of the final product for a cool running, comfortable patient solution. The motor’s competitive price point easily allowed volume production of the new cast removal device.