9403 4 x 24 Inch Belt Sander (Corded)

Last verified May 12, 2026 by the Lifetime Picks Editorial Team

Makita's 9403 is the 4 x 24 inch belt sander r/woodworking, r/turning, and r/Construction surface as the consensus heavy duty pick, 13 lbs, 11 amp motor, and only ~84 dB under load (quiet for a belt sander in this class). The 4 inch belt width covers more surface per stroke than 3 inch competitors, the 24 inch belt length matches the standard commercial belt size so replacement belts are cheap and stocked at any hardware store, and the motor is positioned to keep the belt parallel to the workpiece without operator wrist correction. Variable speed dial sets belt speed from 690 to 1440 SFPM for fine work versus rough stock removal. Adjustable belt tracking, replaceable carbon brushes, and Makita's service network mean the motor lasts indefinitely with periodic brush swaps. r/woodworking treats this as the BIFL belt sander, it survives the daily 8 hour cabinet shop use that destroys consumer belt sanders.