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The Makita 9557PB is a corded 4-1/2 in. angle grinder with a 7.5 amp brushed motor that spins at 11,000 rpm. It weighs 4.5 lb and has an 8 ft cord, a paddle switch with lock-on, a tool-less wheel guard and a spindle lock for fast wheel changes. Labyrinth seals and zig-zag armature varnish protect the motor from dust, which is the durability story Makita leans on. It suits tradespeople and serious DIYers who want a light, one-hand grinder for cutting and grinding metal; it is a bare tool, so the wheel and accessories are on you. Against 4-1/2 in. rivals it is lighter than many 7 amp models but uses a brushed motor rather than brushless, so expect more maintenance over its life.
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Owners of the 9557PB generally rate it as a dependable, light 4-1/2 in. grinder that handles cutting and grinding without bogging down. Complaints center on the brushed motor, the short warranty and the lack of variable speed.
The Makita 9557PB is a corded 4-1/2 in. angle grinder with a 7.5 amp brushed motor. It runs at up to 11,000 rpm. This listing is for the tool only.
A labyrinth construction seals the motor and bearings from dust and debris. A zig-zag varnish also seals the armature from dust and debris.
An extra-large paddle switch has a lock-on/off feature for continuous operation. The side handle can be installed on either side of the tool. The wheel guard adjusts without tools for easy clamping. The grinder weighs 4.5 lb.
