CRAFTSMAN V20* Angle Grinder vs Bosch GWS8-45 4-1/2 In. Angle Grinder
Updated April 2026 — CRAFTSMAN V20* Angle Grinder wins on performance and speed, Bosch GWS8-45 4-1/2 In. Angle Grinder wins on warranty and value.
Product A offers higher motor power and speed with a 7.5 amp motor and 11,000 rpm, making it suitable for demanding tasks. Product B provides better value with a lower price point and a limited lifetime warranty, though it operates at a lower speed of 8,500 RPM.
Why CRAFTSMAN V20* Angle Grinder is better
Higher Motor Power
Product A features a 7.5 amp motor compared to Product B's battery power.
Faster No-Load Speed
Product A delivers 11,000 rpm versus Product B's 8,500 RPM.
Dust Protection
Product A includes directed air flow to divert dust from vital components.
Why Bosch GWS8-45 4-1/2 In. Angle Grinder is better
Lower Price Point
Product B is priced at $64.51 compared to Product A's $79.00.
Better Warranty Coverage
Product B includes a Limited Lifetime Warranty while Product A lists N/A.
More Handle Positions
Product B offers a 3-Position handle versus Product A's Two-Position side handle.
Overall score
Specifications
| Spec | CRAFTSMAN V20* Angle Grinder | Bosch GWS8-45 4-1/2 In. Angle Grinder |
|---|---|---|
| Brand | Bosch | CRAFTSMAN |
| Model Name | CRAFTSMAN V20* Angle Grinder | Bosch GWS8-45 4-1/2 In. Angle Grinder |
| Motor Power | 7.5 amp | Battery |
| No-Load Speed | 11,000 rpm | 8,500 RPM |
| Handle Position | Two-Position | 3-Position |
| Price | $79.00 | $64.51 |
| Warranty | N/A | Limited Lifetime |
| Power Source | Corded (Amp) | Battery |
Dimension comparison
Design and build quality
Product A is manufactured by Bosch and features a durable construction designed for professional use. The tool incorporates a cast metal gear housing which helps dissipate heat during extended use, ensuring longevity in demanding environments. Product B, branded under CRAFTSMAN, also focuses on durability with a design that supports aggressive applications. Both units are built to withstand the rigors of angle grinding tasks, though Product A emphasizes component protection through specific airflow design.
Motor power and performance
The core difference between these two angle grinders lies in their power delivery. Product A is equipped with a professional 7.5 amp motor, providing substantial power for heavy-duty cutting and grinding. In contrast, Product B relies on a battery-powered system, noted by the specification that the battery and charger are sold separately. For users requiring consistent high output without reliance on battery charge levels, the 7.5 amp motor in Product A offers a distinct advantage in raw performance capability.
Speed and efficiency
Rotational speed is a critical factor for angle grinder efficiency. Product A delivers a no-load speed of 11,000 rpm, which allows for faster material removal and smoother cuts on various surfaces. Product B operates at 8,500 RPM, which is suitable for general applications but may require more time for aggressive grinding tasks. The higher rpm of Product A makes it more efficient for professional users who need to complete jobs quickly without sacrificing cut quality.
Ergonomics and handling
User comfort is addressed differently in each model. Product A features a slim-grip design intended to provide outstanding user comfort during operation. It includes a two-position side handle that allows for greater control and utility depending on the task at hand. Product B offers a 3-position handle, providing slightly more versatility in positioning. Additionally, Product B includes a contoured over-molded handle for added comfort, which may reduce fatigue during prolonged use compared to the standard grip on Product A.
Safety features
Safety is paramount when operating high-speed grinding tools. Product A includes a burst-protection guard that provides quick adjustments for user security, helping to protect the operator from debris. The directed air flow feature also contributes to safety by diverting dust from vital components, reducing the risk of malfunction due to particulate buildup. Product B focuses on flexibility with a tool-free guard position designed for flexibility of application, allowing users to adjust safety guards quickly without additional tools.
Maintenance and durability
Long-term tool life is supported by specific maintenance features in Product A. It utilizes durable carbon brushes that deliver extended tool life. Furthermore, it includes service minder brushes that eliminate guesswork by stopping the grinder when preventative maintenance is required. This feature ensures the tool is serviced before damage occurs. Product B mentions a cast metal gear housing that dissipates heat, which aids in durability, but lacks the specific service minder indicators found in Product A.
Warranty and support
Warranty coverage is a significant differentiator between these two options. Product B comes with a Limited Lifetime Warranty, referring users to the Warranty and Support section for full details. This provides long-term peace of mind for the purchaser. Product A does not list a specific warranty term in the provided data, marked as N/A. For buyers prioritizing long-term support and protection against defects, the warranty offered with Product B is a substantial benefit.
Price and value
When considering cost, Product B is the more affordable option at $64.51. Product A is priced higher at $79.00, reflecting its higher motor power and speed specifications. While Product A offers superior performance specs, Product B provides better initial value due to the lower price point and included lifetime warranty. Users must weigh the need for the higher 11,000 rpm performance against the cost savings and warranty coverage provided by Product B.