Makita 4" x 24" Belt Sander, 11 AMP - 9403
The 9403 belt sander has a powerful 11 AMP motor for high-production use, yet at 84 dB is the quietest model in its class. The sander is engineered with Makita's labyrinth construction to seal the motor and bearings from contamination. Convenience features include a large front grip for operator comfort, and a power cord located on the upper portion of the handle. The dust bag swivels 360º for more convenient operation.
Features
- Low noise (84dB) for operator comfort
- 4" wide belt with a speed of 1,640 ft./min. for fast material removal
- Labyrinth construction seals and protects motor and bearings from dust and debris for longer tool life
- Large front grip is positioned for operator comfort
What our Experts Think
-
Heavy-duty sanding power: The Makita 9403 features an 11 AMP motor that drives a 4" x 24" sanding belt at 1,640 ft./min., delivering fast material removal for demanding woodworking and construction projects.
-
Built for professional use: Designed for carpenters, woodworkers, floor installers, and contractors, this belt sander provides reliable performance for large surface sanding applications.
-
Smooth, consistent results: Electronic speed control helps maintain a steady belt speed under load, allowing efficient sanding even during heavy material removal.
-
Comfortable operation: The large front grip, low-noise design, and 360° rotating dust bag improve control and user comfort during extended sanding sessions.
-
Durable jobsite construction: Labyrinth construction helps protect the motor and bearings from dust and debris, extending tool life in demanding environments.
-
Flush sanding capability: The design allows sanding close to walls and edges, making it a practical choice for flooring, furniture, and finish work.
Q&A
Q: What is the Makita 9403 Belt Sander?
A: The Makita 9403 is a 4" x 24" Belt Sander with an 11 AMP motor, designed for fast material removal in woodworking, carpentry, flooring, and construction applications.
Q: What motor power does the Makita 9403 have?
A: It features a powerful 11 AMP motor that delivers high-performance sanding with a belt speed of 1,640 ft./min. for efficient stock removal.
Q: What size sanding belt does the Makita 9403 use?
A: It uses a 4" x 24" abrasive sanding belt for large surface coverage and efficient sanding performance.
Q: What materials can the Makita 9403 sand?
A: It is ideal for sanding wood, furniture, decks, floors, and other large surface applications requiring fast material removal.
Q: Does the Makita 9403 have constant speed control?
A: Yes, electronic speed control helps maintain consistent belt speed under load for smooth and reliable performance.
Q: Is the Makita 9403 designed for professional use?
A: Yes, it is suitable for woodworkers, carpenters, furniture makers, floor installers, deck builders, and general contractors.
Q: Does the Makita 9403 include dust collection?
A: Yes, it includes a 360° swiveling dust bag for convenient dust management during operation.
Q: How much does the Makita 9403 weigh?
A: The belt sander weighs approximately 12.6 lbs for a balance of power and operator control.
Q: Can the Makita 9403 sand close to walls?
A: Yes, its design allows sanding flush to walls using the nose and side of the sander.
Q: What comfort features does the Makita 9403 have?
A: It features a large front grip, low-noise operation, and a design focused on improved user comfort during extended sanding tasks.
Maintenance Tips
-
Clean after use: Remove sanding dust from the belt area, housing, vents, and dust bag to maintain airflow and performance.
-
Empty the dust bag regularly: A clean dust collection system helps improve sanding efficiency and reduces dust buildup.
-
Inspect the sanding belt: Replace worn, clogged, torn, or damaged abrasive belts to maintain smooth material removal.
-
Check belt tracking: Ensure the 4" x 24" belt stays centered during operation and adjust tracking when needed.
-
Protect the motor and bearings: Keep the labyrinth-sealed housing and ventilation openings free from excessive dust and debris.
-
Inspect the wear plate: Check the replaceable wear plate for damage or excessive wear and replace if necessary.
-
Avoid excessive pressure: Let the sander’s 11 AMP motor and belt speed do the work to reduce strain on components.
-
Check the power cord: Inspect the cord and plug for cuts, fraying, or damage before use.
-
Store properly: Keep the belt sander in a dry, clean area and remove dust buildup before storage.
Damage 
Loss 
Theft 
