Hammer drills and impact drills are two types of tools that many people are familiar with. However, there are still quite a few who are unaware of these two drilling machines and their unique functionalities. Today, we will help you understand the differences between these two tools and provide criteria to help you choose the right drill for your needs.
1. How Hammer Drills Work
The Working Principle of Hammer Drills
Essentially, both hammer drills and impact drills generate powerful impact forces that make it easier to drill and cut through large, hard objects such as concrete, wood, and iron. However, each type of drill operates on a different principle:
In a hammer drill, the component that creates this force consists of two small discs located on a drilling shaft, with one edge protruding and meshing with the other. When operated, they work based on the principle of sliding up and down on the shaft, causing the drill’s chuck to collapse forward and create a strong, direct, and linear impact force on the drill shaft.
2. How Impact Drills Work
The Working Principle of Impact Drills
The working principle of an impact drill is based on the impact created by a piston controlled by a crankshaft. The piston is set up and operates like a cylinder, creating air pressure that pushes the drill bit forward.
According to this principle, the impact drill has a superior advantage because the impact force generated by the impact drill is greater than that of a hammer drill. Moreover, an impact drill typically has three main operating modes, including a hammer drill mode, so you can easily use the impact drill like a regular hammer drill.
3. Four Criteria for Choosing the Right Drill for Your Needs
Drill Bits
Hammer Drill: You don’t need to spend extra money on professional drilling tools. Regular drill bits can already drill through concrete and hard objects. These drill bits are typically manufactured with a higher ratio of carbide, making them more durable and reducing the likelihood of breakage during the drilling process.
Drill Bits
Impact Drill: The drill bits of an impact drill usually have grooves on the shaft for safety during operation, such as SDS-Plus bits…. Nowadays, there are many versatile drill bits available that can handle different tasks, making drilling and nailing more efficient and less time-consuming.
Impact Force
Hammer Drill: The impact force is measured in rpm (revolutions per minute). The higher the rpm, the more effective the drilling. But rpm is not the only criterion for choosing the right hammer drill; you should also consider the motor intensity and your comfort level when using and holding the drill.
Impact Force
Impact Drill: The impact force of an impact drill is measured by its power output. The higher the power, the more effective it is. Look for a motor in the range of 7-10 amps that delivers an impact force of 1.5-3 ft.-lbs. Remember to choose a drill with a power output that matches your project’s requirements.
Usability
Usability
Hammer Drill: This type of drill can bore through hard and thick concrete with diameters of up to 68mm.
Impact Drill: Depending on the operating motor, an impact drill can drill through different concrete blocks and typically has a diameter of around 16mm.
Price
Hammer Drill: Hammer drills are priced between 3 to 4.5 million VND, depending on their power output and effectiveness.
Impact Drill: Impact drills are relatively more affordable, usually priced at around 1 to 2 million VND.
- Impact Drill: With a reasonable price and average performance, this type of drill is suitable for household use.
- Hammer Drill: Although slightly more expensive, its superior performance makes it suitable for professional and technically demanding tasks.
So, with the information provided in this article, we hope that you now understand the working principles of hammer drills and impact drills, as well as the criteria for choosing the right drill for your needs. We wish you success in choosing the perfect drill for your next project!
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