Why are brushless drills more durable than brushed drills

Brushless electric drills have an advantage in durability over brushed electric drills. This advantage not only comes from the design of the motor, but is also closely related to the efficiency and innovation of the entire working system. A brushless electric drill uses a brushless motor, which has no contact between the brushes and the commutator. The brushes in the brushed motor will generate friction as they are used, which will not only waste energy but also wear out key components inside the motor. The brushless motor uses electronic commutation technology to switch current without physical contact, greatly reducing wear. This contact-free design significantly reduces friction and extends the life of motor components.
Due to the absence of brushes, the internal structure of the brushless motor is relatively simple, and the reduction in friction parts means that heat generation during operation is significantly reduced. Heat is one of the main factors that cause motor aging and damage, especially when running under high load for a long time. Overheating not only damages the insulation material of the motor, but also accelerates the aging of the internal parts of the motor. The efficient operation of brushless motors enables them to run at lower temperatures, and they are not prone to generating excessive heat even when working for long periods of time or under high load conditions. This excellent heat dissipation performance effectively avoids damage to the motor due to overheating.
Taking environmental factors into consideration, brushless drills are usually designed with a higher level of protection in mind. Since there are no brushes inside the brushless motor, it is less sensitive to dust and impurities, and can therefore maintain a longer service life in some more complex or harsh working environments. Construction sites or maintenance work sites are often accompanied by dust. Traditional brushed electric drills are easily affected by these external factors, resulting in accelerated wear of brushes and commutators, thereby shortening the service life of the electric drill. Brushless electric drills perform more stably in this environment, reducing the occurrence of motor failure.
From a maintenance perspective, the design of brushless drills eliminates the need for users to frequently replace brushes or perform complex motor cleaning. Since there is no hidden danger of brush wear, the long-term use of the electric drill does not require excessive maintenance, which is relatively more time-saving and labor-saving. This is an important advantage especially for users who use electric drills frequently, as brushless electric drills reduce maintenance costs and time investment.
The battery and charging system of brushless drills are more advanced. Advances in battery technology have made brushless drills more efficient in energy use than brushed drills. More efficient batteries not only allow the drill to work longer, but also allow it to be charged in a shorter time, avoiding work interruptions caused by battery problems. Brushless drills are usually equipped with a smart charger that optimizes the charging process, preventing the battery from overcharging or over-discharging, further extending the battery life.