DeWalt 445414-01SV Spindle & Gear Sa for D21160 Type 1 & 2 Right Angle Drill
DeWalt spindle and gear assembly for specific right-angle drill models, including the DW160 and D21160. As a serviceable assembly ("SA"), it is a replacement part that includes both the spindle and the gear.
What it does
The spindle and gear assembly is a critical part of a drill's internal mechanism.
Gear reduction: The gear in this assembly connects with other internal gears to reduce the motor's speed while increasing the output torque. This allows the drill to apply a powerful turning force to the drill bit.
Holding and driving: The spindle is the rotating shaft that holds the chuck, which in turn secures the drill bit. It is responsible for transferring the rotational force to the bit.