The Makita® 40V max XGT® 3″ x 21″ Belt Sander (GSB01Z) delivers corded performance with cordless convenience, providing up to 20% faster sanding than corded models*. Designed for power and precision, this sander is ideal for demanding material removal, finishing, and shaping applications.
✅ High-Speed Material Removal – 3″ wide belt with speeds up to 1,540 ft./min.
✅ Variable Speed Dial – adjust sanding speed from 390 – 1,540 ft./min to match the task.
✅ Large Adjustable Front Grip – enables flush sanding against walls using the nose and side of the sander.
✅ Auto-Tracking Belt System – keeps the belt aligned automatically, no adjustment needed.
✅ AWS® Capable – connect wirelessly to AWS-equipped dust extractors for cleaner work.
✅ Adjustable LED Work Light – illuminates the sanding surface for improved accuracy.
✅ Innovative Weight Balance – optimized design for better tool and battery balance.
✅ Dust Collection Bag – helps maintain a cleaner work environment.
✅ Stationary Use Option – can be clamped (with Clamper Set 192694-6, sold separately) for aggressive sanding, grinding, or shaping.
As part of the XGT® 40V max system, this belt sander is built with advanced brushless motor technology, smart digital communication, and extreme durability – delivering a cordless solution that’s engineered to outpower, outsmart, and outlast the rest.
*Compared to Makita Model 9903.





| Belt Size | 3″ x 21″ |
| Belt Speed (variable speed) | 390 – 1,540 ft./min. |
| Overall Length | 17-1/4″ |
| Net Weight (with battery, sold separately) | 9.9 lbs. |
| Variable Speed Dial | Yes |
| Dust Bag Included | Yes |
| Lock-On Switch | Yes |
| Cordless | Yes |
| Cordless Tool Type | Belt Sander |
| Cordless/Corded | Cordless |
| LED Light | Yes |
| Width | 5-7/8″ |
| Net Weight | 9.9 lbs. |
| Sands Flush to Wall | Yes |
| Packaged Depth (in) | 6.22″ |
| Packaged Height (in) | 9.65″ |
| Packaged Width (in) | 15.04″ |
| Shipping Weight | 9.97 lbs. |
INCLUDES