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…