Customer Context
Operating Environment
High-utilisation surface blast hole drilling operation. Abrasive conditions. Continuous duty cycle. Production-critical fleet.
The Epiroc D65 units were central to daily meter targets.
Core Issue
The rotation head assembly was experiencing recurring premature service life despite standard maintenance practices.
Failures were creating:
- Reduced drill availability
- Unplanned maintenance intervention
- Increased labour exposure
- Escalating component replacement cost
This was not isolated wear. It was instability within the load path of the assembly.
Solution
MASPRO Intervention
MASPRO identified axial movement within the gear-to-spindle interface, creating internal stress and premature fatigue in the rotation head assembly.
Rather than reinforcing the component, we corrected the load path.
The solution included:
- Redesigned spindle with dual adaptors
- Stabilised gear interface via circlip integration
- Reduced axial movement
- Improved load distribution across the assembly
Installed during scheduled maintenance, with lifecycle performance monitored post-deployment.
Results
Increased Reliability and Measurable Performance Gains
- 154% increase in rotation head service life
- Up to 11,000 operational hours achieved
- 89% reduction in annual component expenditure
- Reduced maintenance interaction
- Improved scheduled availability across the Epiroc D65 fleet
The MASPRO Advantage
This result was achieved through:
- Site-specific engineering context
- Load-path correction rather than material substitution
- Precision machining and tolerance control
- Lifecycle-focused redesign
The improvement materially reduced operational risk across the Epiroc D65 fleet
This case study is for general informational purposes. Performance outcomes may vary depending on operating conditions. Organisations should assess applicability to their specific environment.
