Cover for guiding a medium in an abrasive disk

A grinding wheel comprising:

• a support body centered on and rotatable about an axis and having an axially directed face surface and a radially outwardly directed edge surface;
• a grinding layer fixed to one of the surfaces of the body;
• and
• a cover ring fixed to the face surface of the body and forming a single intake opening and a plurality of radially extending cavities opening radially inward and dimensioned to compress and feed radially outward a liquid medium fed to the intake opening while the wheel is rotating about its axis.

A grinding wheel comprising:

• a disk-shaped support body centered on and rotatable about an axis, having an axially directed face surface and a radially outwardly directed edge surface, and formed with an array of angularly equispaced and radially extending bores each having a radial outer end opening at one of the surfaces and a radial inner end;
• a grinding layer fixed to the one surface of the body;
• and
• a cover ring fixed to the face surface of the body and forming a single radially inwardly open intake opening and a plurality of radially extending and angularly equispaced cavities opening radially inward at the opening, of cross-sectional size decreasing radially outward, and connected to the inner ends of the bores, whereby liquid fed to the intake opening while the wheel is rotating about the axis is driven outward through the cavities and respective bores and is pressurized increasingly radially outward.