Tricone Rock Roller Bits - MGS
2019-7-5u2002·u2002used in tricone drilling bits: • STANDARD OPEN BEARING ROLLER BIT: On these bits the cones will spin freely. This type of bit has a front row of ball bearings and a back row of roller bear-ings. • STANDARD OPEN BEARING ROLLER BIT FOR AIR DRILL-ING: Cones are similar to number 1, but have air injection directly to the cones to cool the bearings.
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