• Part number: 86363595
• Product name: O_ring (Hydraulic Sealing Component)
• Applicable equipment: HC50
• Replacement cycle: Every 800 impact hours
• Core advantages: Genuine OEM, short delivery, competitive price
• Key function: Prevents hydraulic leakage, protects internal components
For HC50 Hydraulic Rock Drill (or Hydraulic Drifter) maintenance in mining, the O_ring 86363595 is a make-or-break sealing part. Over a decade in mining equipment, I’ve seen generic O_rings fail repeatedly: their cheap rubber cracks under HC50’s 1500+ psi pressure, causing hydraulic leaks that waste oil, contaminate work zones, and cut drilling speed by 20-30%. Worse, leaks damage costly cylinders—leading to $4,000+ in repairs and days of downtime.
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