Bosch GWS8-45 Grinder Review
Our verdict
The Bosch GWS8-45 is a 900-watt, 120V corded grinder that hits 11000 RPM and weighs just 4.2 pounds. At $64.32 with 2,100 reviews averaging 4.6 stars and 700 units bought last month, it is one of the strongest value options in the corded grinder market.
Check price on AmazonBest for
DIYers and tradespeople who want a lightweight, high-review-count corded grinder with validated demand and a compact form factor.
Skip if
You need a cordless option or require motor output substantially above 900 watts for professional heavy fabrication work.
- Power Source Corded Electric
- Voltage 120 Volts
- Speed 11000 RPM
- Motor 900 watts
- Weight 4.2 Pounds
- Dimensions 11"L x 5.1"W x 3.7"H
- Priced 35% below the category median ($98.50 across 92 tracked models)
Our scorecard
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Owner rating4.6/5
4.6 average across 2,100 owner ratings
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Popularity4.4/5
2,100 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other power tools and workshop machinery we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The Bosch GWS8-45 runs at 11000 RPM on a 120V corded electric motor rated at 900 watts. At 4.2 pounds and measuring 11 inches long, it is among the lighter and more compact corded grinders in this group, which helps reduce fatigue during extended use. The combination of 2,100 reviews and a 4.6-star rating places it among the most validated products in this batch.
At $64.32, the GWS8-45 sits between budget entry-level options and mid-range grinders. The 900-watt motor provides a meaningful step up from the WEN 944 (840 watts, $25.56) while the compact 11-inch frame keeps it highly maneuverable. Seven hundred monthly purchases signal strong ongoing demand from buyers who prioritize proven real-world performance.
Based on its specs, the GWS8-45 suits most DIY grinding, cutting, and surface prep tasks. The 4.2-pound weight makes single-handed positioning easier than heavier corded models, and the 120V input works on standard outlets or job-site generators.
Pros
- 900-watt motor at 11000 RPM balances power and efficiency
- 4.2-pound weight reduces fatigue compared to heavier corded models
- Compact 11-inch length fits more work positions
- 4.6-star rating across 2,100 verified owner reviews
- Strong monthly demand at 700 units bought last month
Cons
- Corded only with no cordless flexibility
- 900 watts may feel limiting for the heaviest professional stock removal tasks
- No published guard or accessory compatibility specs in the listing
Specifications
| Power Source | Corded Electric |
|---|---|
| Voltage | 120 Volts |
| Speed | 11000 RPM |
| Motor | 900 watts |
| Weight | 4.2 Pounds |
| Dimensions | 11"L x 5.1"W x 3.7"H |
Performance notes
Corded 120V electric operation at 11000 RPM with 900 watts. The 4.2-pound body and 11-inch length make it one of the lighter, more maneuverable corded options in this category. Dimensions are 11 by 5.1 by 3.7 inches. Suited for grinding, cutting, and surface prep on standard job-site current.
What buyers say
Owners frequently cite the power-to-weight balance and Bosch build quality as key positives. Many buyers note it handles sustained grinding sessions well for a 900-watt motor. Where negative feedback appears, it tends to focus on preference for higher wattage in the most demanding professional applications.
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Frequently asked questions
What is the motor wattage of the Bosch GWS8-45?
The listed specs show 900 watts of motor power at a no-load speed of 11000 RPM.
How does the Bosch GWS8-45 compare in weight to similar corded grinders?
The GWS8-45 weighs 4.2 pounds, which is lighter than most mid-range corded grinders in this category. Its compact 11-inch length also helps with maneuverability in tight work spaces.
Questions about the Bosch GWS8-45?
Reach ToolGalaxy at hello@toolgalaxy.com for guidance on this or any other grinder.