BRUSHLESS DC MOTOR FOR A BODY-GRIP POWER TOOL

A power tool is provided including a housing including a grip portion; and a brushless direct-current (BLDC) motor at least partially disposed within the grip portion of the housing. The motor includes a stator having a rotor core, a rotor, and front and rear bearing support structures. The stator c...

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Bibliographische Detailangaben
Hauptverfasser:	COCHRAN, Kristopher, AYERS, Justin H, RYDIN, Marcus E. E, JEFFERIES, Dustin, MORI, Sumiteru, FOGLE, John B, SMITH, David J, COX, John D, GOHN, Barak
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DRESSING OR CONDITIONING OF ABRADING SURFACES DYNAMO-ELECTRIC MACHINES ELECTRICITY FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GENERATION GRINDING MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING PERFORMING OPERATIONS POLISHING TRANSPORTING
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Beschreibung
Zusammenfassung:	A power tool is provided including a housing including a grip portion; and a brushless direct-current (BLDC) motor at least partially disposed within the grip portion of the housing. The motor includes a stator having a rotor core, a rotor, and front and rear bearing support structures. The stator core includes a non-segmented construction with a maximum diameter of approximately smaller than or equal to 34 mm, and a ratio of a motor size (Km) constant of the motor to a length of the motor is in the range of approximately 0.39 to 0.59 (Nmm/√W) / mm. When powered by a 20V battery pack, a ratio of a maximum power output of the motor to a volume of the motor is at least approximately 0.0106 W/mm^3.