Rotor for electromagnetic coupling.

摘要

A rotor for a six-pole electromagnetic clutch includes an outer pole ring 41 and an axially facing disc 40. The disc 40 is formed with two circumferentially extending and radially spaced rows of circumferentially spaced slots 54, there being short circumferentially extending bridges 55 between adjacent slots in each row. To strengthen the bridges 55 against failure under high load and heavy wear conditions, a stainless steel reinforcing ring 58 is brazed to the outer pole ring 41 and the disc 40 and transmits torque between the two. The outer edge of the disc 40 thus may be spaced radially inwardly from the outer pole ring 41 to establish an annular air gap 66 which coacts with the two rows of slots 54 to enable the rotor to possess the requisite magnetic characteristics to function in a six-pole clutch.