• Part number: 86789278
• Part weight:
• Product name: pin (Hydraulic Rock Drill Component Connection & Positioning Pin)
• Applicable equipment: HC95 Hydraulic Rock Drill / Hydraulic Drifter
• Replacement condition: Replace based on actual usage (e.g., bending, cracking, excessive wear, loose fit)
• Core advantages: Genuine OEM, short delivery, competitive price
• Key function: Connects movable components (e.g., linkages, brackets), bears shear force during drilling
In HC95 Hydraulic Rock Drill (or Hydraulic Drifter) systems, the pin 86789278 acts as a “silent structural linker”—it’s installed between critical movable components (e.g., the drill’s linkage arms or bracket joints) to maintain precise alignment and transmit shear force during high-vibration drilling (up to 1600 bpm). A faulty pin isn’t just a minor issue: generic pins often bend under shear stress in 500-700 hours, causing component misalignment that reduces drilling accuracy by 20-25% or even damages linked parts (e.g., bracket holes). These failures cost mines $1,600+ in repairs and 1-2 days of unplanned downtime—avoidable with a genuine OEM pin.
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