Gear 3115531380 for Epiroc Cop1838/Cop1838hd/Cop1838hd+

The 311553138 Drive Gear is the core rotary power transmission component for Epiroc COP1838 series hydraulic drifters (COP1838 / COP1838HD / COP1838HD+). Installed inside the drill’s rotary gearbox, it transfers torque from hydraulic motor to drill shank assembly, converting hydraulic power into rotary cutting force for rock drilling.

Produced strictly following Epiroc OEM dimensional standards, this drive gear achieves full drop-in interchangeability with original factory parts. In harsh underground mine, tunneling and quarry working conditions with heavy dust, high vibration and fluctuating load, it delivers stable torque output, effectively reducing gearbox failure downtime and extending the whole service life of your Epiroc COP1838 rock drill.

• OEM Precision Machining for Perfect Fit
• Premium Alloy Steel & Professional Heat Treatment for Extreme Durability
• Stable Torque Transmission & Cost-saving Protection
• User-friendly Maintenance Design

• Underground metal/coal mine blasthole drilling: fitted on Epiroc COP1838/HD/HD+ drifter for production blast hole drilling in hard rock strata.
• Tunnel & underground engineering: anchor bolt, drainage hole and supporting hole drilling for highway, railway tunnel construction.
• Open-pit quarry & mine excavation: pre-split hole and production hole drilling for stone quarry and open pit mine project.
• Equipment overhaul replacement: ideal spare part for full maintenance of used COP1838 series Epiroc hydraulic drifter.