MAKITA

Makita 9403 Sander

Sander
11 amps
Corded electric
13 pounds

4.7/ 5 on Amazon2,886Amazon ratings100+bought last month4.3ProductDome score

Better rated than 75%
More reviewed than 89%

High confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology

Best forYou need a corded belt sander with enough amperage for flooring or heavy stock removal

A corded, 11 amp belt sander with real power behind it, suited to stock removal jobs where a smaller sander would stall.

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ProductDome scorecard

How it ranks among the 170 sanders we track

4.3/ 5ProductDome scoreHigh confidence

Owner satisfaction · 56% of scorecategory median 4.5★4.7

4.7★ across 2,886 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 323 ratings4.3

2,886 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score2.7

100+ bought on Amazon last month.

Data quality · 11% of score3.8

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 170 sanders we track - how the scorecard works · full sanders data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

The Makita 9403 is a corded electric belt sander running on a 120 volt, 11 amp motor, with a belt speed of 27.33 feet per second and a tool weight of 13 pounds. It is built for stock removal and surface leveling rather than light finish sanding.

An 11 amp motor paired with a belt speed north of 27 feet per second puts this at the higher-output end of belt sanders, the kind contractors reach for on flooring and framing lumber rather than furniture touch-up. At 13 pounds it is heavier than a palm or orbital sander, and that mass helps keep the belt tracking flat under load.

Corded electric, 120 volts
11 amp motor
Belt speed of 27.33 feet per second
13 pounds

Who it's for

Contractors and serious woodworkers sanding floors, decks or large panels who need fast material removal. Not the right tool for fine finish work or anyone wanting a lightweight, one-handed sander.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out

11 amp motor for fast stock removal
Corded power for unlimited runtime
13 pound body helps the belt track flat

What to check first

Less suited to fine finish work
Corded design limits reach compared to battery tools

Performance notes

The 11 amp motor and 27.33 feet per second belt speed indicate a sander tuned for fast material removal on wood and similar surfaces. Corded power means no battery runtime to manage on longer jobs, and the 13 pound body adds the downward mass that helps a belt sander cut evenly instead of chattering.

Specifications

Brand	MAKITA
Model	9403
Amperage	11 amps
Power Source	Corded electric
Item Weight	13 pounds
Voltage	120 volts

How it compares

This product against the closest alternatives we track in sanders.

Product	Amazon rating	Ratings	ProductDome score
Makita 9403 SanderThis product	4.7 / 5	2,886	4.3 / 5
DEWALT DCW210B SanderDeWalt	4.8 / 5	13,683	4.7 / 5
SKIL SR211601 SanderSkil	4.6 / 5	7,366	4.6 / 5
BLACK+DECKER BDERO100 SanderBLACK+DECKER	4.6 / 5	15,574	4.5 / 5
WEN 6307 SanderWEN	4.6 / 5	6,255	4.4 / 5

Frequently asked

Questions about the MAKITA 9403

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

Is the Makita 9403 corded or battery powered?

It is corded electric, running on a 120 volt supply.

How fast does the Makita 9403 belt sander run?

Its belt speed is rated at 27.33 feet per second.

How much does the Makita 9403 weigh?

13 pounds.