school me on brush vs brushless saws and impacts

[94yj]

pros and cons on both all opinions greatly appreciated Tia

 

[LB-1911]

Two previous threads



02-10-2015
General observations about brushed vs brushless tools
http://www.garagejournal.com/forum/showthread.php?p=4628176

01-28-2017
Brushless vs brush motors in drills
http://www.garagejournal.com/forum/showthread.php?p=6274426

 

[bcradio]

No difference really in how the motor works.

Brushless saw motor works the same as a brushless impact motor.

The brushed saw motor also works the same as the brushed impact motor.

 

[kctyphoon]

Too lazy to type again..

http://www.popularmechanics.com/home/reviews/a8109/whats-so-great-about-brushless-motor-power-tools/

 

[theoldwizard1]

Brushless have no sliding electrical contacts (brushes). This means less friction so they spin easier and faster but have less torque than a brushed motors (at the same speed). The motor weigh less (less copper) and even though there is some fancy electronics and powerful magnets the actual cost of manufacturing is really not that much more (even though, you the customer, pay a lot more).

In almost every application the motor is geared down. With brushless motors they are gear down even more which gives them similar/more torque than brushed motors.

Also because there is less friction and the speed control is all electronic, batteries last longer.