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Upper cylinder 86687217 - Main View of Genuine OEM Upper Cylinder Block for HC20 Hydraulic Rock Drill/Drifter
Upper cylinder 86687217 - Main View of Genuine OEM Upper Cylinder Block for HC20 Hydraulic Rock Drill/Drifter

Upper cylinder 86687217 Genuine OEM Upper Cylinder Block for HC20 Hydraulic Rock Drill/Drifter

• Part number: 86687217
• Part weight:
• Product name: Upper cylinder (Hydraulic Rock Drill Upper Cylinder Block)
• Applicable equipment: HC20
• Replacement condition: Long-term use; replace only when damaged (e.g., inner wall scratches, cracks, oil port deformation)
• Core advantages: Genuine OEM, short delivery, competitive price
• Key function: Houses upper hydraulic components (e.g., valves, small pistons), bears high hydraulic pressure, ensures oil circuit smoothness

Why AUG Crusher Parts?

  • Reliable yet Affordable
  • 100% Guaranteed to Fit
  • On-time Delivery Schedule
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Description

In HC20 Hydraulic Rock Drill (or Hydraulic Drifter) systems, the Upper cylinder 86687217 is the “upper hydraulic hub”—it’s responsible for mounting key upper components and maintaining stable oil pressure for the drill’s control system.

From mining maintenance experience, generic upper cylinders often fail early: low-strength materials (tensile strength < 600 MPa) crack under pressure in 2000-2500 hours, and rough inner walls cause component wear.
This Upper cylinder 86687217, as genuine OEM, meets strict standards:
  1. Durability: Heat-treated alloy steel (tensile strength ≥ 750 MPa) resists cracks and pressure deformation.
  2. Precision: Inner wall polished to Ra ≤ 0.4μm, ensuring no component wear; coaxiality ±0.002mm for perfect fit.
  3. Oil circuit stability: Smooth oil ports prevent oil flow resistance, maintaining system efficiency.
With short delivery (no 2-3 week waits) and good pricing, it’s ideal for mines needing long-term reliability—keeping HC20’s upper hydraulic system stable for years.
Montabert HC20 Parts
ModelPart No.DescriptionWeight/KgQty.UnitAlternative Part No.
HC20866866491Pcs
HC20866687041Pcs
HC20866771761Pcs
HC20862501071Pcs
HC20862215951Pcs
HC20866793881Pcs
HC20866872171Pcs
HC20866686622Pcs
HC20866393172Pcs
HC20866687381Pcs
HC20866687461Pcs
HC20866687531Pcs
HC20866340451Pcs
HC20954213358Pcs
HC20866006321Pcs
HC20865809661Pcs
HC20953033683Pcs
HC20866686131Pcs
HC20866771501Pcs
HC20866393091Pcs
HC20866689361Pcs
HC20866688601Pcs
HC20866688861Pcs
HC20866842631Pcs
HC20866769708Pcs
HC20953033352Pcs
HC20866686391Pcs
HC20866689931Pcs
HC20866690171Pcs
HC20866854351Pcs
HC20866686471Pcs
HC20866689021Pcs
HC20862219181Pcs
HC20866690251Pcs
HC20862819381Pcs
HC20866689102Pcs
HC20866686541Pcs
HC20863185161Pcs
HC20866686621Pcs
HC20864200981Pcs
HC20866687611Pcs
HC20866687791Pcs
HC20866689288Pcs
HC20953033351Pcs
HC20862626982Pcs
HC20866768631Pcs
HC20862670692Pcs
HC20866842711Pcs
HC20866687951Pcs
HC20866688291Pcs
HC20863257921Pcs
HC20866771841Pcs
HC20866771921Pcs
HC20866688111Pcs
HC20866689441Pcs
HC20866768221Pcs
HC20866251751Pcs
HC20866689511Pcs
HC20866782241Pcs
HC20866663511Pcs
HC20866768891Pcs
HC20866768971Pcs

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