freeamfva: Brushed vs. Brushless Power Tool Motors

Brushed vs. Brushless Power Tool Motors

8 May 2024 at 01:16am
Brushed vs. Brushless Power Tool Motors
When it comes to power tools, you’ve likely encountered both brushed and brushless motors. But what exactly are these motors, and how do they compare? Let’s dive into the details.Get more news about power screwdrivers brushed motor,you can vist our website!

What’s a Brushed Motor?
Brushed motors have been the standard type of electric motors for many years. You’ll find them in various power tools, especially corded ones. Here are the key features of a brushed motor:

Armature: The armature (or rotor) consists of wound wire coils surrounding a shaft. When the motor runs, the armature spins, driving the tool (e.g., a drill bit or saw blade).
Commutator: The commutator is attached to the armature shaft and rotates with it. It plays a crucial role in changing the direction of electrical current.
Brushes: These carbon-based components are set on springs and press against the commutator. As the shaft spins, the brushes maintain contact with the commutator, allowing current flow.
Stator: The stationary magnets (permanent magnets) surround the armature but don’t touch it. They have opposite polarities and interact with the armature to create rotational motion.
How Does a Brushed Motor Work?
Here’s a simplified explanation of how a brushed motor operates in a cordless power tool:

Electrical current from the battery flows through the brushes into the commutator, magnetizing the armature’s wire coils.
The stator magnets push and pull the armature, causing it to rotate. As the shaft turns, the commutator switches polarity, ensuring continuous motion.
Advantages of Brushed Motors:
Cost-Effective: Brushed motors are relatively inexpensive due to their simple design.
Robust: They don’t require electronic controllers, making them less sensitive to harsh conditions.
Brushed Motor Disadvantages:
Wear and Tear: Brushes wear out over time, requiring replacement.
Less Efficient: Brushed motors lose energy due to friction and heat.
Tools That Benefit From Brushed Motors:
Corded Power Tools: Many corded drills, saws, and grinders use brushed motors.


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