The Complete Guide To Bosch Gbh 18v-21 Professional: Specifications, Pros And Cons, Troubleshooting, And Buying Tips

Bosch GBH 18V-21 Professional Information

Introduction

The Bosch GBH 18V-21 Professional is a cordless hammer drill that offers powerful performance and versatility. It features a brushless motor that delivers 2.0 joules of impact energy, making it ideal for a wide range of applications, including masonry, concrete, and brickwork. The GBH 18V-21 Professional also has three operating modes: hammer drilling, drilling, and chiseling, making it a highly versatile tool.

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Image of Bosch GBH 18V-21 Professional

Specifications

  • Motor: Brushless
  • Impact energy: 2.0 joules
  • Max. drilling capacity in concrete: 16 mm
  • Max. drilling capacity in steel: 13 mm
  • Max. drilling capacity in wood: 30 mm
  • Battery: 18V
  • Runtime: Up to 110 holes in concrete (with a 5.0Ah battery)
  • Weight: 2.4 kg

Features

  • Brushless motor for powerful performance and long battery life
  • Three operating modes: hammer drilling, drilling, and chiseling
  • Electronic overload protection for added safety
  • Vibration control for reduced user fatigue
  • LED work light for improved visibility
  • Soft grip for comfortable handling

What's in the box

  • Bosch GBH 18V-21 Professional hammer drill
  • 18V 5.0Ah battery
  • Charger
  • SDS-plus bits
  • Carrying case

Additional information

  • The Bosch GBH 18V-21 Professional is compatible with all Bosch 18V batteries and chargers.
  • The tool is covered by a 3-year warranty.

Conclusion

The Bosch GBH 18V-21 Professional is a powerful and versatile cordless hammer drill that is ideal for a wide range of applications. It features a brushless motor for powerful performance and long battery life, three operating modes for added versatility, and a variety of features that make it comfortable and safe to use. If you are looking for a high-quality cordless hammer drill, the Bosch GBH 18V-21 Professional is a great option.

Bosch GBH 18V-21 Professional Compare with Similar Item

a table comparing the Bosch GBH 18V-21 Professional with some similar items:

FeatureBosch GBH 18V-21 ProfessionalMakita XFD07ZDeWalt DCK279M2
Voltage18 V18 V18 V
Max. impact energy2 J2.1 J2.4 J
Max. drilling diameter in wood30 mm30 mm35 mm
Max. drilling diameter in concrete21 mm22 mm24 mm
Max. drilling diameter in masonry16 mm16 mm18 mm
Weight2.7 kg2.7 kg2.9 kg
Price$150$160$170

Comparison

The Bosch GBH 18V-21 Professional is a powerful and versatile cordless hammer drill. It has a max. impact energy of 2 J, which is enough for most drilling and chiseling applications. It also has a three-mode operation for hammer drilling, drilling, and chiselling. The Bosch GBH 18V-21 Professional is a bit heavier than some of the other models on this list, but it is still relatively lightweight and easy to use.

The Makita XFD07Z is another great option for a cordless hammer drill. It has a max. impact energy of 2.1 J, which is slightly higher than the Bosch GBH 18V-21 Professional. The Makita XFD07Z also has a brushless motor, which provides longer runtime and better performance. However, the Makita XFD07Z is also more expensive than the Bosch GBH 18V-21 Professional.

The DeWalt DCK279M2 is a good value option for a cordless hammer drill. It has a max. impact energy of 2.4 J, which is the highest on this list. The DeWalt DCK279M2 also comes with two batteries, which is a nice bonus. However, the DeWalt DCK279M2 is the heaviest model on this list.

Conclusion

The Bosch GBH 18V-21 Professional is a great all-around cordless hammer drill. It is powerful, versatile, and relatively lightweight. If you are looking for a reliable and affordable cordless hammer drill, the Bosch GBH 18V-21 Professional is a great option.

The Makita XFD07Z is another great option, but it is slightly more expensive. If you are willing to spend a bit more, the Makita XFD07Z is a great choice.

The DeWalt DCK279M2 is a good value option, but it is the heaviest model on this list. If you are looking for a lightweight cordless hammer drill, the DeWalt DCK279M2 may not be the best choice for you.

Bosch GBH 18V-21 Professional Pros/Cons and My Thought

The Bosch GBH 18V-21 Professional is a cordless hammer drill that is designed for professional use. It features a brushless motor that delivers up to 2 joules of impact energy, making it capable of drilling through concrete, brick, and masonry. The drill also has a variable speed trigger and a rotation reversible switch, making it versatile for a variety of applications.

Here are some of the pros and cons of the Bosch GBH 18V-21 Professional:

Pros:

  • Powerful brushless motor
  • Up to 2 joules of impact energy
  • Variable speed trigger
  • Rotation reversible switch
  • Lightweight and compact design
  • Compatible with Bosch's 18V battery platform

Cons:

  • No battery or charger included
  • Can be a bit noisy
  • Pricey

Here are some user reviews of the Bosch GBH 18V-21 Professional:

Positive reviews:

  • "This drill is a beast! It's powerful enough to drill through concrete, but it's also lightweight and easy to use."
  • "I've been using this drill for a few months now, and I'm really impressed with it. It's been reliable and durable, and it's done a great job on all of my projects."
  • "This is the best cordless hammer drill I've ever used. It's powerful, versatile, and easy to use."

Negative reviews:

  • "I wish it came with a battery and charger."
  • "It's a bit noisy, but I guess that's to be expected with a drill this powerful."
  • "It's a bit pricey, but I think it's worth it for the quality and performance."

Overall, the Bosch GBH 18V-21 Professional is a powerful and versatile cordless hammer drill that is well-suited for professional use. It is lightweight and easy to use, and it delivers a good balance of power and performance. However, it is a bit pricey, and it does not come with a battery or charger.

My thoughts:

I think the Bosch GBH 18V-21 Professional is a great cordless hammer drill. It is powerful, versatile, and easy to use. I would definitely recommend it to anyone who is looking for a high-quality drill for professional use.

However, I do think the price is a bit high. If you are on a budget, there are other cordless hammer drills that offer similar performance for a lower price. But if you are looking for the best of the best, the Bosch GBH 18V-21 Professional is a great option.

Bosch GBH 18V-21 Professional Where To Buy

some places where you can buy the Bosch GBH 18V-21 Professional and spare parts:

  • Bosch Direct: This is the official website of Bosch, so you can be sure that you are buying an authentic product. They also offer a variety of spare parts for the GBH 18V-21 Professional. Image of Bosch Direct website
  • Walmart: Walmart is a great place to find a wide variety of tools at competitive prices. They often have sales and promotions, so you can save money on the GBH 18V-21 Professional. Image of Walmart website
  • Amazon: Amazon is another great place to find tools and spare parts. They have a huge selection of products, and you can often find them at a lower price than other retailers. Image of Amazon website
  • Best Buy: Best Buy is a good option if you are looking for a brick-and-mortar store where you can buy the GBH 18V-21 Professional. They also offer a variety of spare parts. Image of Best Buy website
  • Lowe's: Lowe's is another good option for brick-and-mortar stores. They have a wide selection of tools and spare parts, and their prices are competitive. Image of Lowe's website
  • eBay: eBay is a great place to find deals on used tools and spare parts. You can often find the GBH 18V-21 Professional for a fraction of the price of a new one. Image of eBay website

I hope this helps!

Bosch GBH 18V-21 Professional Problems and Solutions

some common issues and problems with the Bosch GBH 18V-21 Professional drill and their solutions:

  • The drill won't turn on.
    • Check that the battery is inserted correctly and that it is charged.
    • If the battery is inserted correctly and charged, the drill may have a faulty switch. In this case, you will need to contact Bosch for a replacement switch.
  • The drill is not drilling properly.
    • Check that the drill bit is sharp and the correct size for the material you are drilling.
    • If the drill bit is sharp and the correct size, the drill may have a faulty chuck. In this case, you will need to contact Bosch for a replacement chuck.
  • The drill is overheating.
    • This is usually caused by prolonged use at high speeds. Allow the drill to cool down before using it again.
    • If the drill is overheating even after a short period of use, it may have a faulty motor. In this case, you will need to contact Bosch for a replacement motor.
  • The drill is making a strange noise.
    • This could be a sign of a number of problems, such as a worn bearing or a loose screw. If you hear a strange noise coming from your drill, it is best to stop using it and contact Bosch for further assistance.

Here are some additional tips for troubleshooting common Bosch GBH 18V-21 Professional drill problems:

  • Check the user manual. The user manual contains a troubleshooting section that can help you identify and fix common problems.
  • Clean the drill regularly. Dust and debris can build up inside the drill and cause problems. To clean the drill, simply remove the battery and use a brush to clean out the dust and debris.
  • Store the drill properly. When you are not using the drill, store it in a cool, dry place. This will help to prevent the drill from overheating or becoming damaged.

I hope this helps!

Bosch GBH 18V-21 Professional Manual

Safety information

  • Read all safety warnings, instructions, and illustrations before using the tool.
  • Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.
  • Do not use the tool if it is damaged.
  • Keep the tool away from children and unauthorized persons.
  • Use the tool only for its intended purpose.
  • Do not use the tool in wet or damp conditions.
  • Wear safety glasses and hearing protection when using the tool.
  • Use the correct drill bit for the material you are working with.
  • Do not overload the tool.
  • Allow the tool to cool down before storing it.

Before Use

  • Make sure the tool is switched off before connecting or disconnecting the battery.
  • Charge the battery fully before using the tool.
  • Select the correct drill bit for the material you are working with.
  • Wear safety glasses and hearing protection when using the tool.

Troubleshooting

  • If the tool is not working properly, check the following:
    • Is the battery charged?
    • Is the drill bit the correct size for the material you are working with?
    • Is the tool overloaded?
    • Is the tool overheating?

Maintenance

  • Clean the tool regularly with a dry cloth.
  • Do not use harsh chemicals or solvents to clean the tool.
  • Inspect the tool for signs of wear or damage before each use.
  • Replace worn or damaged parts immediately.

Warranty

  • This tool is warranted to be free from defects in material and workmanship for a period of two years from the date of purchase.
  • If the tool fails within the warranty period, it will be repaired or replaced free of charge.

Contact Information

  • For more information, please contact Bosch at:

Additional Information

  • The GBH 18V-21 Professional is a cordless rotary hammer that is powered by two 18V batteries.
  • The tool has three modes of operation: hammer drilling, drilling, and chiselling.
  • The tool is equipped with a brushless motor that provides longer runtime and increased durability.
  • The tool comes with a carrying case, two batteries, and a charger.

I hope this manual has been helpful. Please feel free to contact Bosch if you have any further questions.

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