Rock bit lubrication system

Details Rock bit lubrication system Rock bit lubrication system

1982-05-17

1984-01-31

Purser, Ernest R.

Boring or penetrating the earth

With storage means for bit lubricant carried by bit or shaft

With fluid pressure-actuated feed means

175337, 384 93, 384318, E21B 1022

Patent

active

044284420

ABSTRACT:
This invention relates to rotary rock drilling apparatus, particularly roller cone rock bits used with dry drilling of rock formations. Mining bits are typically air-driven, air-lubricated roller cone rock bits having open bearings, the air being driven through the bearing system between the roller cones and their associated journals. A lubrication system is disclosed which drips a lubricant in liquid form into the air passages communicating with each of the bearings associated with, for example, the three roller cones of the rock bit. Oil is entrained, along with the compressed air, and is directed to the bearings for cooling and lubrication purposes.

REFERENCES:
patent: 2751196 (1956-06-01), Smith
patent: 2831660 (1958-04-01), Smiecinski

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