The BOSCH Professional GWS 800 Angle Grinder is a compact, corded angle grinder designed for metal cutting, grinding, deburring, and surface preparation. It features an 800W motor, a maximum no-load speed of 11,000 RPM, and a 100mm disc diameter. Its all-metal gearbox, ergonomic grip, two-position side handle, and spindle lock support convenient handling and accessory changes. Weighing approximately 1.7 kg according to the supplied listing, it is suitable for fabrication workshops, maintenance teams, contractors, and experienced DIY users.
Working Principle
The Bosch GWS 800 Angle Grinder converts electrical energy into rotational mechanical energy through an electric motor.
Electrical input: The 230V AC supply powers the 800W motor.
Rotational movement: The motor drives the spindle through the gearbox.
Material removal: A compatible abrasive or cutting disc rotates at high speed to cut, grind, or smooth the workpiece.
Operator control: The side handle supports a stable grip, while the spindle lock helps secure the spindle during accessory changes.
The specified no-load speed is 11,000 RPM. The actual speed may change under load.
Technical Specifications
Specification
Details
Brand
Bosch Professional
Model
GWS 800
Tool type
Angle grinder
Rated input power
800 W
Voltage
230V AC, as listed
No-load speed
11,000 RPM
Disc diameter
100 mm
Spindle thread
M10
Weight
Approximately 1.7 kg, as listed
Gearbox
All-metal
Side handle
Two-position, detachable
Spindle lock
Yes
Switch
Lock-on switch, as listed
Carbon brushes
Replaceable
Power source
Corded electric
Included accessories
Two cutting wheels and one grinding wheel, as listed
Warranty
1 year, according to the supplied listing
Verify the precise regional model, included accessories, switch configuration, and warranty terms with the seller before purchase.
Market Ranking and Position
An independently verified sales rank or market-share position is not available here. The following is an indicative assessment based on the supplied specifications, not an official market ranking.
Evaluation factor
Assessment
Motor power
800W; suitable for routine cutting and grinding
No-load speed
11,000 RPM
Disc size
Compact 100mm category
Portability
Lightweight design, as listed
Gearbox construction
All-metal
Accessory changes
Spindle lock
Maintenance
Replaceable carbon brushes
Best-fit segment
Workshop, fabrication and maintenance
Overall positioning
Compact professional-use angle grinder
Main Uses
Cutting suitable metal rods, bars, and profiles.
Grinding welds and metal joints.
Removing burrs from cut metal edges.
Removing rust and surface imperfections with appropriate accessories.
Preparing steel surfaces before painting or fabrication.
Grinding and smoothing metal components.
Cutting suitable masonry materials only with an approved accessory and appropriate dust controls.
Industrial Applications
Metal fabrication workshops: Cutting metal sections, smoothing welds, and finishing fabricated components.
Plant maintenance: Removing corrosion, cleaning metal parts, and carrying out minor repair work.
Construction and installation: Preparing metal sections & cutting compatible materials during installation work.
Automotive repair: Grinding suitable metal components and preparing surfaces for repair.
Product Comparison
This comparison uses the Bosch GWS 800, DEWALT DW803, and Makita M9511B models discussed for your product content.
Feature
Bosch GWS 800 Angle Grinder
DEWALT DW803
Makita M9511B
Rated input power
800W
1000W
850W
Disc diameter
100mm
100mm
125mm
No-load speed
11,000 RPM
10,000 RPM
Verify regional specification
Power source
Corded
Corded
Corded
Spindle lock
Yes, as listed
Yes, as listed
Verify configuration
Side handle
Included, as listed
Included, as listed
Verify package
Notable feature
Compact design and all-metal gearbox
Higher listed wattage
Larger disc capacity
Best suited for
Compact cutting and grinding
100mm applications needing higher listed wattage
Applications requiring a 125mm disc
Comparison is based on the supplied product information. Confirm all specifications against the exact model and regional manufacturer’s documentation.
Which should you choose?
Choose the Bosch GWS 800 Angle Grinder for a compact 800W grinder with an 11,000 RPM no-load speed.
Consider the DEWALT DW803 if you prefer its listed 1000W rating.
Consider the Makita M9511B if your work requires a 125mm disc.
A higher RPM does not automatically mean faster cutting. Disc type, material, pressure, and tool design also affect performance.
Experienced DIY users requiring a compact corded grinder.
Who Should Avoid It?
Consider a different machine if you need:
A larger cutting depth than a 100mm disc can provide.
Heavy, uninterrupted industrial production without a verified suitable duty rating.
A cordless tool for remote work locations.
A dedicated polishing machine or precision sharpening system.
Specialist equipment for intensive concrete cutting.
A lower-noise or dust-controlled solution for indoor work.
Key Benefits
800W motor: Provides power for many everyday cutting and grinding tasks.
11,000 RPM no-load speed: Supports high-speed operation with compatible discs.
Compact 100mm disc: Suitable for many general metalworking applications.
Lightweight construction: The listed 1.7kg weight can help with manoeuvrability.
All-metal gearbox: Provides a robust gearbox construction.
Two-position side handle: Supports improved grip and operator control.
Spindle lock: Makes compatible accessory changes more convenient.
Replaceable carbon brushes: Supports servicing when brushes reach their wear limit.
Protective guard: Helps protect the operator when correctly fitted and used.
Multiple applications: Supports cutting, grinding, and deburring with appropriate accessories.
Limitations
The 100mm disc limits cutting depth compared with larger grinders.
The cord restricts movement and requires a safe mains supply.
High-speed grinding produces sparks, noise, dust, and heat.
The 800W rating alone does not establish continuous-duty suitability.
Accessories must be compatible with the spindle, disc dimensions, and maximum speed.
The supplied listing’s dimensions should be verified if installation or storage space is critical.
Actual performance depends on the workpiece material, disc quality, and operating technique.
Safety Precautions
Wear safety goggles and a face shield, hearing protection, and suitable respiratory protection for the material.
Inspect every disc for cracks, damage, and correct speed rating before use.
Install the correct guard and side handle before operation.
Secure the workpiece firmly and maintain a balanced grip.
Keep sparks away from combustible materials and flammable liquids.
Never force the disc or twist a cutting disc inside a cut.
Keep the power cable away from the rotating disc.
Unplug the grinder before changing accessories or performing maintenance.
Wait for the disc to stop completely before placing the tool down.
Use only accessories designed for the intended application.
Follow the manufacturer’s manual and the instructions supplied with the grinding or cutting disc.
Maintenance Guide
Frequency
Maintenance task
Before use
Check the disc, guard, side handle, cable, plug, and switch.
After use
Unplug the tool and remove accumulated dust using a suitable method.
Weekly, depending on use
Inspect ventilation openings, housing, and accessories.
Monthly, depending on use
Check for abnormal vibration, noise, overheating, and cable damage.
When changing discs
Verify disc dimensions, bore, mounting arrangement, and speed rating.
Periodically
Have worn carbon brushes and other service items inspected or replaced according to the manual.
Do not operate the grinder if the disc is damaged, the switch malfunctions, or the machine develops unusual vibration or excessive heat.
Conclusion
The BOSCH Professional GWS 800 Angle Grinder is a compact, corded power tool for metal cutting, grinding, deburring, and surface preparation. Its 800W motor, 100mm disc, 11,000 RPM no-load speed, all-metal gearbox, spindle lock, and detachable side handle make it a practical option for workshops, contractors, and maintenance teams.
It is best positioned as a compact professional-use grinder for routine applications rather than as an automatic replacement for larger or continuous-duty industrial grinding equipment. Verify the exact model, accessories, warranty, and duty rating before purchase.
Product Review Disclaimer
Note: This product review is based on publicly available product information, manufacturer specifications, and seller-provided details. We have not personally tested or independently verified this product. Specifications, features, accessories, availability, and prices may change without notice. Please verify the latest details with the manufacturer or seller before making a purchase.
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FAQs:
1. What is the power rating of the Bosch GWS 800 angle grinder?
The Bosch GWS 800 angle grinder has a rated input power of 800W, according to the supplied product specifications. It is designed for suitable cutting, grinding, and metal-finishing applications.
2. What is the maximum speed of the Bosch GWS 800 Angle Grinder?
The Bosch GWS 800 has a specified no-load speed of 11,000 RPM. This high rotational speed supports compatible cutting and grinding tasks when the correct accessories are used.
3. What disc size does the Bosch GWS 800 use?
The Bosch GWS 800 is designed for 100mm (4-inch) discs, according to the supplied specifications. Always use discs that meet the manufacturer’s size, speed, and application requirements.
4. What is the spindle thread size of the Bosch GWS 800 Angle Grinder?
The supplied product listing specifies an M10 spindle thread. Check the accessory specifications and mounting requirements before purchasing replacement discs or attachments.
5. Can the Bosch GWS 800 Angle Grinder cut steel?
Yes, the Bosch GWS 800 can cut steel when fitted with a compatible metal-cutting disc rated for the tool’s operating speed. Secure the workpiece, use appropriate personal protective equipment, and follow the manufacturer’s safety instructions.
6. Can the Bosch GWS 800 Angle Grinder grind welds?
Yes, it can be used for suitable weld-grinding and metal-finishing tasks with a compatible grinding disc. Select the correct abrasive for the material and avoid applying excessive pressure.
7. What accessories are included with the Bosch GWS 800 Angle Grinder?
According to the supplied listing, the package includes two cutting wheels and one grinding wheel. Actual package contents may vary, so confirm the included accessories with the seller before purchasing.
8. Is the Bosch GWS 800 suitable for industrial use?
The Bosch GWS 800 may be suitable for routine workshop fabrication, maintenance, and light-duty industrial tasks. For continuous production, verify the manufacturer’s operating recommendations, workload limits, and duty rating.
9. Does the Bosch GWS 800 have a spindle lock?
Yes, the supplied product description lists a spindle-lock feature. It helps lock the spindle during disc changes. Always disconnect the grinder from the power supply before replacing or adjusting accessories.
10. Does the Bosch GWS 800 have replaceable carbon brushes?
Yes, replaceable carbon brushes are listed in the supplied specifications. Inspect and replace them according to the manufacturer’s maintenance instructions to support reliable operation.
11. Is the Bosch GWS 800 suitable for home use?
Yes, it may be suitable for home workshops and DIY projects involving compatible cutting, grinding, and surface preparation. Users should have appropriate safety equipment, a secure working area, and sufficient experience to operate an angle grinder safely.
12. Bosch GWS 800 vs DEWALT DW803 Angle Grinder: Which angle grinder is better?
Based on the supplied specifications, the Bosch GWS 800 has an 800W motor and an 11,000 RPM no-load speed, while the DEWALT DW803 is listed with a 1,000W motor and a 10,000 RPM no-load speed.
The DEWALT has the higher rated input power, while the Bosch has the higher listed no-load speed. The better choice depends on the intended application, handling, accessory compatibility, price, and local service availability.
13. Can the Bosch GWS 800 Angle Grinder run continuously for eight hours?
Continuous eight-hour operation should not be assumed. Confirm the manufacturer’s duty rating, cooling requirements, and operating instructions before using the grinder for extended production work. Allow appropriate breaks and inspect the tool regularly.
14. What is the warranty period for the Bosch GWS 800 Angle Grinder?
The supplied product listing states a one-year warranty. Check the seller’s current warranty terms, proof-of-purchase requirements, and coverage conditions before buying.
15. What is the difference between watts and RPM in an angle grinder?
Watts (W) indicate the motor’s rated electrical input power, while revolutions per minute (RPM) measure how fast the disc rotates without a load. Both specifications are important, but neither alone determines cutting performance. Disc type, material thickness, abrasive quality, applied pressure, and tool design also affect the results.
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