Paper Machine Blind Drill Press Roll  

Paper Machine Blind Drill Press Roll Blind Drill Press Roll Description The Blind Drill Press Roll is also coated with rubber or polyurethane on the iron roll core. Blind holes with a diameter of 2 mm and a depth of 12 to 15 mm are drilled on the rubberized surface. It is also possible to drill blind holes with different depths and two rows alternately. The opening rate of the blind hole pressing roller is about 25% to 30%, and its eye hole volume is about 5 times larger than that of the grooved pressing roller, so it can accommodate more Squeeze water. The solid part of the blind hole pressure roller is not as easy to damage as the grooved pressure roller, so the roller can be covered with a soft rubber layer, about 70-90 Shore hardness. As a result, first, it can reduce the wear of the felt, and second, it can provide a wider nip, which is beneficial to increase the line pressure of the nip. Compared with a grooved roller with a depth of 15 mm and a groove depth of 2.5…