In HC95 Hydraulic Rock Drill (or Hydraulic Drifter) operations—where high-impact force (up to several thousand Newtons per cycle) is transmitted through the shank—the Shank thrust 86757672 acts as a “protective buffer” for the drill’s internal system. It directly bears the repetitive impact from the shank during drilling, preventing excessive force from damaging precision parts like the cylinder, piston, or transmission shaft. With over a decade in mining equipment maintenance, I’ve seen generic shank thrusts fail catastrophically: most use low-hardness alloy that wears down in just 200-300 hours, leading to shank misalignment, uneven drilling depth, and even cracks in the drill’s housing. These failures cost mines $4,000+ in repairs and 2-3 days of unplanned downtime—losses that disrupt production schedules.