Spindle bearing arrangement for a power tool

摘要

A power tool that includes a housing, a motor, a pair of motor bearings, a transmission, an output spindle and front and rear spindle bearings. The motor is received in the housing and includes a stator and an output shaft that extends through the stator. The motor bearings support the output shaft for rotation relative to the housing and are disposed on opposite ends of the stator. The transmission is driven by the motor and includes an input pinion that is mounted to the output shaft for rotation therewith. The output spindle is driven by the transmission. The front spindle bearing is mounted to a front end of the output shaft radially between the housing and the output shaft. The rear spindle bearing is mounted to a rear end of the output spindle and a portion of the rear spindle bearing rotates with the output shaft.

主权项

1. A power tool comprising:
a housing; a motor received in the housing, the motor having a stator and an output shaft that extends through the stator; a pair of motor bearings supporting the output shaft for rotation relative to the housing about an axis, the motor bearings being disposed on opposite ends of the stator; a transmission driven by the motor, the transmission having an input pinion that is mounted to the output shaft for rotation therewith; an output spindle driven by the transmission for rotation about the axis; a front spindle bearing mounted to a front end of the output spindle radially between the housing and the output spindle; and a rear spindle bearing mounted to a rear end of the output spindle, wherein a portion of the rear spindle bearing engages and rotates with the output shaft.