DeWalt 326294-02 Pinion For DW620 DW621 DW621 DW622 DW921 Berner 000087/BR-621 Router

326294-02 is a replacement pinion gear used in specific models of DeWalt and related brand routers. 
Function and Use
Power Transmission: The pinion gear engages with the larger ring gear within the router's internal mechanism. This interaction transmits power from the motor to the spindle assembly, allowing the router bit to spin.
Rotational Force Conversion: It is an essential component of the gear train, converting high-speed motor rotation into the necessary torque and speed range for routing operations.
Restoring Operation: If the original pinion gear is damaged, worn, or stripped, the tool's motor will run but the router bit will not spin correctly, making this part essential for restoring the tool to working order. 
Tool Compatibility
This pinion is compatible with several models of routers from DeWalt, as well as those produced by affiliated brands like Berner and Facom