SUPPORT OF CONE BIT Russian patent published in 2009 - IPC E21B10/22 

FIELD: mining.

SUBSTANCE: invention refers to rock destroying tool, particularly to supports of cone bits. The said technical result is achieved like follows: the suggested support consists of a sleeve bearing, exterior surface of which is coated with a layer of a wear resistant material. Also the surface of the wear resistant material is cut with grooves filled with solid lubricant. Depth of grooves is 0.4-0.6 from thickness of the layer of wear resistant material. In addition, the layer of wear resistant material can be applied as on exterior surface of the journal, so on interior surface of the roller cutter; while the grooves for lubrication are cut as screwed or direct line parallel to journal axis.

EFFECT: upgraded wear resistance of support due to reduced accidental ingress of abrasive material into loaded part of support, when interacting surfaces of journal and roller cutter are simultaneously lubricated.

2 cl, 6 dwg