The 86746427 Splined Nut is a high-performance, self-lubricating power transmission component for the Montabert HC95 hydraulic drifter, acting as the critical interface between the hydraulic motor and the drill bit shank. This precision-machined bronze nut transfers high-torque rotary power while providing wear resistance and alignment stability, ensuring smooth, efficient drilling under extreme conditions.

Manufactured to Montabert’s exact OEM specifications, this splined nut guarantees a seamless drop-in fit with the HC95’s gearbox and shank assembly, preserving torque transmission efficiency and operational stability. In harsh underground mining, tunneling, and quarrying environments—where dust, moisture, and continuous vibration are constant—it resists wear, scoring, and corrosion, directly extending the service life of your Montabert rock drill.

• Genuine Montabert Precision for Perfect HC95 Compatibility
• High-Impact Durability for Mining Operations
• Hydraulic Sealing & Debris Protection
• Optimized Design for Maintenance Efficiency

The 86746427 Splined Nut is an indispensable replacement part for your Montabert rock drill in all core operational scenarios:

• Transmitting rotary torque in Montabert HC95 rock drills during underground mining blasting hole drilling (up to 40m depth) in hard-rock formations like granite and basalt.
• Driving the shank assembly in Montabert HC95 rock drills used for tunnel anchor and support hole drilling in wet, dusty infrastructure construction projects.
• Maintaining cutting efficiency in Montabert HC95 rock drills during quarrying operations for stone cutting, rock excavation, and pre-splitting tasks.
• Restoring factory-spec power transmission performance during full overhauls or gearbox replacement of Montabert rock drills.