Milwaukee has recently introduced 7 new 4.5" grinders aimed at the metalworking grinder market. These new grinders will compete directly with other top names currently dominating metalworking grinders such as Bosch, Makita and Metabo.
Some of the new features that will make Milwaukee competitive include: Debris Baffles, basically an engineered L-shape intake vents protect the motor and other components by deflecting debris particles out of the airflow before entering the grinder. Another feature is the Multi-Port Exhaust vents on all four sides of the gear case allow more hot air to escape preventing motor burn-up, others typically have only 2. Also Milwaukee uses a 25% Longer Lasting Epoxy Coating to increase tool life by preventing debris from damaging copper wires in the motor.
Some of the connivance and safety features include: Tool Free Adjustable Guard allowing the user to quickly adjust the guard without the use of a tool. Burst Resistant Guard Positive detents lock the guard in place so if a wheel burst, the guard is more secure and less likely to rotate. Finally the Soft Grip 3-Position Side Handle provides optimal control for any application. Top position is ideal for cutting.
The reason there are 7 models is because for each version there are locking and non-locking triggers, for compliance reasons. Ohio Power Tool sells all 7 models call 800-242-4424 if you need any help determining which would be right for you.
Models Include: 6122-30 10AMP Rat Tail w/Lock, 6122-31 10AMP Rat Tail no Lock, 6148-30 10AMP Paddle w/Lock, 6148-31 10AMP Paddle no Lock, 6148-33 10AMP Slide Trigger w/lock, 6140-30 7.5AMP Paddle w/Lock, 6140-33 7AMP Slide Trigger w/lock
See YouTube Videos: Debris Baffles & Milwaukee Rat Tail Grinder