Bosch · Updated July 2026
Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool): price & specs
- Best for Solid Bosch build quality for the price ($129); Good fit for smaller jobs if already on the Bosch 18V platform.
- Skip if Brushed (non-brushless) motor stands out as a shortcoming is a dealbreaker.
Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool). Every price and spec below is linked to its source and dated — no guesses.
Source: boschtools.com verified ✓ corroborated verify in ledger
Is the Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool) a good buy?
At $139, the Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool) is #9 cheapest of the 18 angle grinders we track, where the median is $149. On the spec sheet, its disc size of 4.5 in is the lowest of the 18, and its max of 10000 rpm is at the median of the 18.
Evidence of Record
Our dataNo independent lab has measured this product yet. 1 outlet has it on record by mention only, with no hands-on measurements published to weigh its claims against — a gap in the evidence, not a verdict on the product.
Review consensus · sourced & dated
What reviewers say about the Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool)
Only one whitelisted tester, Pro Tool Reviews, covers the exact GWS18V-45 bare tool, and only as a 2016 first-look preview, not a hands-on lab test. It calls the $129 build solid Bosch quality but flags the missing brushless motor and notes these grinders won't match the power of higher-voltage rivals like DeWalt's FlexVolt.
Tested by Pro Tool Reviews
Consistently praised
- Solid Bosch build quality for the price ($129)
- Good fit for smaller jobs if already on the Bosch 18V platform
Commonly flagged
- Brushed (non-brushless) motor stands out as a shortcoming
- Not a power leader versus higher-voltage rivals like DeWalt FlexVolt
Where reviewers disagree Single-source and preview-only: no whitelisted tester published a hands-on, measured lab test of the exact GWS18V-45 bare tool, so no cross-source comparison or verified benchmark data is available.
The sources (1)
you get Bosch quality in the build
the lack of a brushless motor does stand out
For users looking for a cordless grinder to fit smaller jobs, these could fit the bill nicely if you're already on Bosch's 18V platform.
Specifications
| Price (US) | $139 Tool Nut lists a regular price of $139.00 for the bare tool (currently sold out; sale price $95.06). Pro Tool Reviews' 2016 launch article cited a $129 launch price. Used $139.00 (verbatim on the Tool Nut product page). |
|---|---|
| Brand | Bosch |
| Released | — |
| Disc size (in) | 4.5 in |
| Power source | cordless |
| Amps or voltage | 18 V |
| Max (rpm) | 10000 |
| Brushless | No |
| Switch type | slide |
| No volt release | Yes |
| Weight (lb) | — |
Source: boschtools.com (verified 2026-07-10) · corroborated by toolnut.com. Tool Nut's product page for the exact model (Model Number: GWS18V-45, "Tool Only") confirms 18V, a 4-1/2 in. wheel, 10,000 RPM, cordless power source, a four-brush (non-brushless) motor, a "Sliding switch layout," and restart protection (no-volt release), and lists a regular price of $139.00 (sale $95.06, currently sold out). The Pro Tool Reviews 2016 launch article independently confirms the same 4.5-inch / 18V / 10,000-RPM four-brush build and notes "the lack of a brushless motor," distinguishing this base GWS18V-45 from the EC-brushless, paddle-switch GWS18V-45PCN and the 5-inch GWS18V-50. Weight is left null because sources conflict (Tool Nut lists 5.3 lb while Bosch's launch spec via Pro Tool Reviews lists 4.0 lb), so no single verified bare-tool figure is asserted.
Is the Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool) worth it vs cheaper angle grinders?
Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool) against its closest cheaper and pricier angle grinders on the specs that matter — every value sourced. See all 18 ranked →
| Product | Price | Disc size (in) | Power source | Amps or voltage | Max (rpm) | Brushless |
|---|---|---|---|---|---|---|
| Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool) this | $139 | 4.5 in | cordless | 18 V | 10000 | No |
| Makita GA5052 4-1/2 in./5 in. Paddle Switch Corded Angle Grinder (AC/DC) | $129 | 5 in | corded | 11 A | 11000 | No |
| Bosch GWS13-50 5 in. Corded Angle Grinder | $159 | 5 in | corded | 13 A | 11500 | No |
Frequently asked questions
What do reviewers say about the Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool)?
Only one whitelisted tester, Pro Tool Reviews, covers the exact GWS18V-45 bare tool, and only as a 2016 first-look preview, not a hands-on lab test. It calls the $129 build solid Bosch quality but flags the missing brushless motor and notes these grinders won't match the power of higher-voltage rivals like DeWalt's FlexVolt. Praised: Solid Bosch build quality for the price ($129); Good fit for smaller jobs if already on the Bosch 18V platform. Flagged: Brushed (non-brushless) motor stands out as a shortcoming; Not a power leader versus higher-voltage rivals like DeWalt FlexVolt. (From 1 tester review.)
How much does the Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool) cost?
The Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool) has a US price of $139 (Tool Nut lists a regular price of $139.00 for the bare tool (currently sold out; sale price $95.06). Pro Tool Reviews' 2016 launch article cited a $129 launch price. Used $139.00 (verbatim on the Tool Nut product page).), as of 2026-07-10.
How does the Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool) compare on price?
At $139, the Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool) is #9 cheapest of the 18 angle grinders we track, where the median is $149.
What are the Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool)'s key specs?
Bosch GWS18V-45 18V 4-1/2 in. Cordless Angle Grinder (Bare Tool) (Bosch): disc size in 4.5 in, power source cordless, amps or voltage 18 V, max rpm 10000, brushless No. Full sourced spec sheet verified 2026-07-10.
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Compare with
Cheaper angle grinders
- Makita GA5052 4-1/2 in./5 in. Paddle Switch Corded Angle Grinder (AC/DC) $129
- DeWalt DWE402 4-1/2 in. Small Angle Grinder $117
- Ridgid R86040B 18V X4 4-1/2 in. Cordless Angle Grinder (Tool Only) $99
- Bosch 1375A 4-1/2 in. 6 A Corded Angle Grinder $98
- Makita GA4530 4-1/2 in. Corded Angle Grinder $89
- Milwaukee 6130-33 7.0 A 4-1/2 in. Small Angle Grinder $89
Step up
- Bosch GWS13-50 5 in. Corded Angle Grinder $159
- Makita XAG04Z 18V LXT Brushless 4-1/2 in./5 in. Cut-Off/Angle Grinder (Tool Only) $179
- DeWalt DWE43144N 6 in. 13 A E-Clutch Paddle Switch Corded Angle Grinder (No Lock-On) $188
- DeWalt DCG413B 20V MAX XR Brushless 4-1/2 in. Paddle Switch Angle Grinder (Tool Only) $199
- Flex FX3171A-Z 24V 5 in. Variable Speed Brushless Angle Grinder with Paddle Switch (Tool Only) $199
- Milwaukee M18 FUEL 2880-20 4-1/2 in./5 in. Grinder Paddle Switch No-Lock (Tool Only) $229