Bosch GBH 18V-21 Cordless Rotary Hammer Price and Review

The Bosch GBH 18V-21 cordless rotary hammer offers a combination of power, versatility, and portability, perfect for various drilling, hammer drilling, and chiseling applications. It’s designed for both professionals and DIY enthusiasts who require reliable performance without the limitations of a corded tool. Below, we explore the specifications, key features, ideal uses, customer insights, FAQs, and our final verdict on this versatile tool.

Video

Specifications

This section covers the essential specifications of the Bosch Professional GBH 18V-21, detailing everything from its dimensions to power sources and compatibility.

• Manufacturer: Bosch Professional
• Model Number: GBH 18V-21
• Dimensions: 14.09 x 8.94 x 4.49 cm
• Weight: 2.4 kg (5.29 lbs)
• Color: Blue
• Power Source: Battery-powered (18V Lithium-Ion)
• Voltage: 18 Volts
• Wattage: 90 Watts
• Impact Energy: 2 Joules
• Max Rotational Speed: 1800 RPM
• Battery Capacity: 4.0 Amp Hours
• Battery Compatibility: Compatible with the Bosch Professional 18V System and AMPShare multi-brand alliance
• Operating Modes: Drilling, Hammer Drilling, and Chiseling
• Included Components: GBH 18V-21 and a storage box
• Battery and Charger: Not included
• Material: Plastic construction for durability and reduced weight

Key Features

With advanced engineering from Bosch, this cordless rotary hammer is packed with features that improve both usability and efficiency. Here are some of its standout features.

• Three Operating Modes:
  • Drilling for standard tasks in wood, metal, and plastics.
  • Hammer Drilling to tackle hard surfaces like concrete.
  • Chiseling for tasks requiring material removal.
• Brushless Motor:
  • Increased Service Life: Lasts longer and requires less maintenance than brushed motors.
  • Better Battery Efficiency: Optimizes each battery charge for longer runtime.
• Lightweight Design:
  • Weighing only 2.4 kg, it’s easier to handle and reduces fatigue over long work sessions.
  • Designed with an optimal performance-to-weight ratio, allowing users to handle tasks with less strain.
• AMPShare Compatibility:
  • Works seamlessly with the Bosch Professional 18V System and the AMPShare battery alliance, providing greater battery flexibility across tools.
• High Impact Energy:
  • 2 Joules of impact energy, sufficient for light chiseling and effective drilling into tough surfaces.

Ideal For

The Bosch GBH 18V-21 is suited for a range of users and applications, from construction sites to home DIY projects. Here’s a look at the ideal scenarios for this tool.

• Professional Use in Construction and Renovation:
  • Suitable for plumbers, electricians, and construction workers needing efficient tools for concrete drilling and chiseling tasks.
• Home Renovation Projects:
  • Great for DIY enthusiasts who need to drill or chisel into hard surfaces around the house.
• Multi-Tool Users:
  • Perfect for users invested in the Bosch Professional 18V System or AMPShare battery alliance, as they can interchange batteries across compatible tools.
• Light Chiseling Tasks:
  • Due to its moderate 2 Joules impact energy, this tool is ideal for light chiseling and material removal in less demanding applications.

Customer Feedback

The GBH 18V-21 has earned solid feedback from users who praise its performance and design. Below are some common themes from user reviews.

• Battery Compatibility:
  • Many users appreciate the tool’s compatibility with the Bosch Professional 18V System and AMPShare alliance, providing flexibility for those already invested in these batteries.
• Lightweight and Easy to Handle:
  • The 2.4 kg weight is consistently mentioned as a benefit, making the tool manageable even for extended periods.
• Versatility of Modes:
  • Users value the three operating modes, which enable them to tackle different tasks with a single tool.
• Durable and Long-Lasting Motor:
  • The brushless motor is well-received for its durability, with many users noting it offers more extended use between charges and requires minimal maintenance.
• Minor Downsides:
  • Some users mention that the lack of included batteries and charger requires an additional purchase, which is a consideration for first-time buyers.

FAQ

For those considering the Bosch GBH 18V-21, here are answers to some frequently asked questions.

• Does the GBH 18V-21 come with a battery and charger?
  • No, this model is sold as a “bare tool” and does not include a battery or charger. It is compatible with the Bosch Professional 18V System batteries.
• What is AMPShare, and why is it important?
  • AMPShare is a battery alliance that allows users to use a single battery across various compatible tools from different brands, offering greater flexibility.
• Can this tool be used on concrete?
  • Yes, with the hammer drilling mode, the GBH 18V-21 can drill into concrete and similar hard surfaces effectively.
• Is the GBH 18V-21 suitable for heavy-duty chiseling?
  • It’s better suited for light chiseling due to its 2 Joules impact energy. For heavy-duty tasks, a higher-impact model might be more appropriate.
• What are the benefits of the brushless motor?
  • The brushless motor increases runtime per battery charge, reduces maintenance needs, and generally extends the tool’s overall lifespan.

Verdict

The Bosch Professional GBH 18V-21 cordless rotary hammer is a versatile, lightweight, and powerful tool, ideal for a range of drilling, hammer drilling, and chiseling tasks. Its compatibility with the Bosch Professional 18V System and AMPShare alliance makes it particularly appealing for users with multiple Bosch tools, as it allows battery sharing across devices.

Pros:

• Lightweight and portable at 2.4 kg
• Three operating modes for versatile use
• Durable brushless motor for extended runtime
• AMPShare compatibility for greater battery flexibility

Cons:

• Batteries and charger not included
• Limited to light chiseling tasks due to moderate impact energy

In conclusion, the Bosch GBH 18V-21 offers an excellent balance of performance, convenience, and compatibility, making it a strong choice for professionals and DIYers alike who want a flexible and durable rotary hammer.