4 - WHEELS TAPERED ON BOTH SIDES
Due to their design and concave steel flanges, the Type 4 grinding wheels are protected against the possibility of slip off of wheel fragments.
They are used for rough grinding on steel, cast iron, cast steel, aluminium, bronze and other materials. They may be used on specialized electrical or pneumatic portable grinding machines, exceptionally without guards.
MARKING EXAMPLES
4 - 75/20 x 19/16 x 20 - 95A16Q5B51 - 50