DC motors are much easier to understand, so I'll start with them. Universal motors are used in most hand-held power tools, such as drills, milling machines, jig saws and sanders. While relatively new to the professional hand tool market, brushless motors have been used for years. We produce brushless and brushless DC motors.
Brushless DC motors have many advantages compared to brushed motors, such as longer running time, more power and a longer lifespan. A drill with a brushless motor adjusts its speed, torque and power supply to suit the task at hand. A brushed drill requires new brushes every few hundred hours of use, but brushless models don't have brushes that need to be replaced. Like lithium-ion tool batteries where not all cells are made the same, not all brushless motors serve the same purpose.
Oursler said that brushless versions of power tools also have a lower susceptibility to mechanical wear than counterparts with brushes, and that the battery used with a cordless, brushless motor drill will last longer per load than with a brushed drill. The ability to adapt rugged motor technology to specific tool needs is key to both performance and efficiency, Fry said. Fry said that more than half of the tools in those product lines are currently brushless and that there are opportunities to expand brushless motors to tools that would benefit from increased performance. Domel is known for its customized solutions, such as a battery-powered chainsaw motor, a leaf blower motor, a hedge trimmer motor, a screwdriver motor, a paint gun motor and a spray disinfection motor for surfaces.
Milwaukee Tool's brushless motor-driven tools and equipment include drills and rotary hammers, swivel hammers, crimpers, band saws, reciprocating saws, circular saws, table saws, threaded rod cutters, fishing belts, screwdrivers and impact wrenches, threaders tubes, nailers, grinders, press tools, blowers, wire trimmers, chain saws and some types of light equipment. Considerations such as the type of power supply, internal construction, application and type of motion output can be used to classify electric motors. For example, if you use a brushless drill to drive screws into styrofoam, it more easily detects a lack of resistance (compared to a brushed motor) and starts to extract only the little charge it needs from the battery. It is generally believed that AC motors are more powerful than DC motors because they can create more torque with a higher current.
The impact of brushless DC motors for battery-powered hand tools is often compared to the revolution of lithium-ion batteries. They're here to stay, but it'll probably be a while before technology seeps into all the power tools for weekend DIYers. As more tools with brushless motors became available, manufacturers began to promote the advantages of their brand's motors, just as they do with their brand's lithium-ion batteries. Simply put, when a power tool offers high torque, it will have a low rotational speed and vice versa.
The concept of torque expresses the amount of rotational force produced by the motor of a power tool. While the power supply is the most notable distinction between the two types of motors, each has its own set of features and uses. .
