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Continuous Innovation in Leg Structure to Enhance Overall Bit Life

2026-02-06

The leg, a key load-bearing component of a roller cone bit, directly impacts the bit's service life through its structural design. T

The leg, a key load-bearing component of a roller cone bit, directly impacts the bit's service life through its structural design. Technical improvements in the industry include optimizing the leg's retaining pin hole design. For example, changing the retaining pin hole to a straight hole at a specific angle can help improve stress distribution, reduce the risk of fatigue fracture at the locking groove, thereby increasing leg strength and extending the bit's service cycle.

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