Power tools commutator What kind of how good or bad:
1, according to the wiring in the form of trench-and Groove
2, according to the mechanical strength of common type and ruggedized
3, according to the structure of the hole with no liner and liner
4, according to the copper Material copper, cadmium, cobalt and copper, and silver and copper commutator commutator of skew between the axis of the film should not be greater than the nominal insulation thickness of 1/3 of the working surface of the radial commutator round jitter value of not more than GB / T 1184 10 in two adjacent radial with a maximum error of less than 0.01mm 500v megger at room temperature, the commutator between the commutator bore sheet insulation resistance greater than 50M ohm