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Bosch

Bosch GWS8-45 4-1/2 In. Angle Grinder

  • Based on 2,121 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Aug 27
Order within 22 hours and 6 minutes
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Style: Adjustable


Features

  • POWERFUL MOTOR: Professional 7.5 amp motor delivers 11,000 no-load rpm
  • SLIM-GRIP DESIGN: Provides outstanding user comfort
  • DURABLE CARBON BRUSHES: Delivers extended tool life
  • TWO-POSITION SIDE HANDLE: Allows for greater control and utility
  • DIRECTED AIR FLOW: Diverts dust from vital components for durability
  • BURST-PROTECTION GUARD: Provides quick adjustments for user security
  • SERVICE MINDER BRUSHES: Eliminates guesswork, stopping grinder when preventative maintenance is required
  • LARGE SPINDLE LOCK: Provides easy disc changes

Description

The Bosch GWS8-45 4-1/2 In. Angle Grinder is a light, ergonomic grinder, with a slender grip circumference that allows users to work comfortably for extended periods. This 4.2 Lbs. tool delivers plenty of power, with a 7.5 Amp motor that produces 11,000 no-load RPM. It has directed air flow that diverts dust away from vital components. Bosch's Service Minder brush system shuts off the tool when preventative maintenance is required, which helps to eliminate guesswork. This grinder has a two-position side handle. It has a burst- protection quick adjustable guard designed for user protection, as well as a large spindle lock for easy disc changes.

Brand: Bosch


Material: Plastic


Product Dimensions: 11"L x 5.1"W x 3.7"H


Style: Industrial


Power Source: Corded Electric


Power Source: Corded Electric


Voltage: 120 Volts


Wattage: 900 watts


Maximum Rotational Speed: 11000 RPM


Item Dimensions L x W x H: 11"L x 5.1"W x 3.7"H


Item Weight: 4.2 Pounds


Style Name: Industrial


Color: Black


Material Type: Plastic


Brand Name: Bosch


Model Number: GWS8-45


Manufacturer: Bosch


Manufacturer Warranty Description: Warranty


UPC: 000346488036


Manufacturer Part Number: GWS8-45


Included Components: Grinder, Backing Flange, Lock Nut, Spanner Wrench, Type 27 Grinding Guard, Side Handle


Unit Count: 1.0 Count


Item Type Name: Corded Angle Grinders


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Aug 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Tough, Hardworking Grinder
Style: Industrial
I bought this grinder to use with poly abrasive stripping discs to remove paint on an older ranch house. I appreciate that the grinder is not heavy while still being beefy. The grip is small enough to run one handed, which I needed to do often while stretching arms length at the top of a ladder. The left-side push switch took some getting used to when using left handed. The constant on function works easily...push the switch forward and then press inward. I ran this grinder continuous for up to 15 minutes at a time, through a 5 pack of abrasive discs, over three days, grinding off old paint on wood siding. The grinder got warm, but never overheated. I was impressed. I like the safety guard. It fit the 4 1/2" x 7/8" poly discs perfectly with no contact. The guard requires an Allen key to loosen and reposition it. A clamping guard would be a plus. The auxilliary handle can be used on either left or right. One thing I. like is that the Allen key for the guard, and the wrench for the blade nut are all in one piece, an interesting tool, a little different from the standard wrench. The holes in the blade nut are standard width. It took me about one minute to assemble the tool out of the box. The single speed is rated 11,000 rpms, and I note it runs constant, and has not bogged down in my use. The wheel-lock on the back is red, and is easy to use while changing a blade. Glad I bought it. This is an excellent quality tool for professionals that definitely goes to the job site. ... show more
Reviewed in the United States on July 27, 2025 by Coffeeman
    • Great a product/Price
Style: Industrial
Very sturdy and lots of power . Very good price !
Reviewed in the United States on May 27, 2026 by bluechip
    • Quality tool
Style: Industrial
I needed an angle grinder to use with my new lawn mower blade sharpener. Can't say this is any better than other name brands but the price was attractive and it seems like a quality tool. Been working well for me so far.
Reviewed in the United States on May 11, 2026 by A Tronzo
    • Best to hold comfortably
Style: Industrial
I checked out a lot of angle grinders from different manufacturers, my need being mostly DIY projects. I needed something that is fairly good quality, is good budget wise, should be easy to hold, not too heavy and easy to maneuver. Also it needed to be able to stay on without having to keep some paddle switch pressed continuously. So it came down to a choice between the Bosch 1735A (which seems shorter in length in the picture) and this one. This GWS8-45 is so slender that my thumb can almost touch my middle finger holding it so superb to hold and use it. I went with the GWS8-45 since it has the higher 7.5 amp rating though for my use even the 6 amp rating would be sufficient and the 1375A might be even more easier to hold and maneuver. Maybe I would have gone with that if I had both to hold and compare. The blade guard on the GWS8-45 is a bit interesting to install and not too easy to change positions. You have to use the provided key to loosen the bolt and then turn it around and tighten it. However the positive qualities more than make up for this and if you are using it set to a particular position for grinding or for cutting, you won't really notice it once set. ... show more
Reviewed in the United States on June 16, 2022 by Reviewer
    • Good tool with a crappy wrench.
Style: Industrial
Had the older model before in Germany, loved it, that's why I bought it again. There is a new wrench with it, which is pretty disappointing... the pins are to thin, not a good hold if you want to tighten/untighten the disc. Wondering if Bosch Tech do a practise test before they release this crap. The old device came with 2 tools, a wrench to hold it and a kind of 2 pin like this one but much more precise with a good fit, not wobling around. Besides that still a good tool. ... show more
Reviewed in the United States on August 30, 2025 by R. Franz
    • Works great and is built well
Style: Industrial
I have several hundred hours of work done with one of these on a huge project, so I bought another one just in case. I highly recommend this Bosch. It may not be the most fancy looking one on the market but it is a workhorse. The construction is durable and i was able to buy some accessories for it, like a vacuum collection cover that just made it all that much nicer to use. It's not any louder than the DeWalt angle grinder, but the side switch on this one is a little bit harder to activate. Overall pretty happy with it given the price and the durability. ... show more
Reviewed in the United States on May 11, 2026 by Robbyg
    • Recieved fast
Style: Industrial
Great tool and priced good
Reviewed in the United States on April 1, 2026 by Jill Kennedy
    • Can’t go wrong with g with this.
Style: Industrial
Was the best choice for me out of the dozens of models for sale. Good ergonomics and powerful. I have had good luck with Bosch power tools.
Reviewed in the United States on May 10, 2026 by Carlgo

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