In HC20 Hydraulic Rock Drill (or Hydraulic Drifter) systems, the Front guide 86325792 acts as the “front-line protector and guide”—installed at the drill’s front end, it has two critical roles: first, it precisely guides the shank’s reciprocating movement (ensuring the drill bit stays aligned with the rock target), and second, it forms a barrier against mining debris (dust, small rock chips) that could scratch internal components like the piston or seals.

1. High strength: Made of heat-treated ductile iron (tensile strength ≥ 600 MPa), it resists cracking and deformation even under heavy rock impact.
2. Precision guidance: The guide hole is machined to ±0.003mm tolerance, ensuring consistent shank alignment and minimizing drill bit deviation.
3. Debris resistance: The outer surface features a wear-resistant coating, while the inner cavity has a dust-sealing structure—keeping internal components clean.