FIELD: process engineering.
SUBSTANCE: set of inventions relates to drill bits, particularly, to sealing systems for drill bit bearings and devices for said sealing system. Sealing system for drill bit bearing comprises the packing gland, shaft and seal fitted in said gland and pressed against by the packing gland on the shaft sealing surface. Sealing surface comprises the surface texturing including several non-overlapping separate surface texturing elements arranged as a reiterating structure. Note that surface texturing elements compose the tank-like structure.
EFFECT: retention of additional lubricants and reduced friction in the seal.
28 cl, 3 dwg
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|---|---|---|---|
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|
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