Makita 9557PB Paddle Switch Angle Grinder 4-1/2 Inch
- Wattage: 900 watts
- Maximum Rotational Speed: 10000 rpm
- Power Source: Corded Electric
- Material Type: Plastic
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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ASIN: B0009OR8XOModel: 9557PBCategory: Power Grinders
Overview
This is a corded electric angle grinder from Makita, drawing 900 watts on a 120 volt line to spin its disc at 10000 RPM. At roughly 14 by 5 by 6 inches, it stays compact for a full size grinder.
Corded tools trade battery swaps for constant power, and this Makita holds a steady 10000 RPM as long as it stays plugged in. The 900 watt motor and 120 volt draw point to a machine built for grinding and cutting metal rather than light detail work. No seller description or attribute list details the disc size, so match it against whatever wheels are already on hand.
- 120 volt corded electric power source
- 900 watt motor rating
- 10000 RPM disc speed
Who it's for
Suited to anyone doing metal fabrication, welding cleanup, or masonry cutting who wants a full time corded grinder rather than a battery model that runs down mid job. Not the pick for someone who needs to work far from an outlet or wants a lighter cordless unit for occasional touch ups.
Pros and cons
- Steady 10000 RPM with no battery drop off
- 900 watt motor for grinding and cutting
- Compact body sized for a standard grinder
- Corded, so reach is limited by cord length
- No disc size listed in the data
Performance notes
The 900 watt motor at 120 volts pushes the disc to 10000 RPM, a speed aimed at grinding, cutting, and surface prep on metal. Because it is corded, output does not fade the way a battery powered grinder can under load. The listed dimensions, about 14 by 5 by 6 inches, put it in the size range of a standard angle grinder body.
Specifications
| Brand | MAKITA |
|---|---|
| Model | 9557PB |
| Dimensions & fit | |
| Item Dimensions L X W X H | 14 × 5 × 6 inches |
| Capacity & performance | |
| Maximum Rotational Speed | 10000 rpmlower than 60% of 122 power grinders |
| Power & efficiency | |
| Wattage | 900 wattshigher than 65% of 55 power grinders |
| Power Source | Corded Electric |
| Voltage | 120 voltshigher than 52% of 103 power grinders |
| Horsepower | 0.01 hp |
| Construction & materials | |
| Material Type | Plastic |
| Color | Blue |
| Included components | |
| Unit Count | 1 |
| Included Components | Makita 9557PB 4-1/2" Paddle Switch Angle Grinder, With AC/DC Switch |
| Warranty & support | |
| Manufacturer Warranty Description | Warranty |
| Other details | |
| Style Name | Tool Only |
| Item Type Name | Makita 9557PB 4-1/2" Paddle Switch Angle Grinder, With AC/DC Switch |
Closest rivals on specs
DEWALT DWE46253 Concrete Surface Grinder Kit 5 Inch- Maximum Rotational Speed 10000 vs 9000 rpm (+11%)
Frequently asked questions
What is the motor power on the Makita 9557PB grinder?
It runs a 900 watt motor on a 120 volt corded connection.
How fast does the Makita 9557PB spin?
The listed speed is 10000 RPM.
Does the Makita 9557PB run on battery?
No, it is corded electric, so it needs a wall outlet rather than a battery pack.