The 86374055 Cover is a critical structural and sealing component for the Montabert HC50 and HC120 rock drills, serving as the front-end protective housing for the drill’s internal impact and hydraulic systems. As a genuine OEM part, it encloses the piston, shank assembly, and sealing mechanisms, while providing a precision mounting interface for the drill’s front-end components.

Manufactured to Montabert’s exact factory specifications, this cover guarantees a seamless drop-in fit with both the HC50 and HC120 models, preserving hydraulic pressure integrity and component alignment. In harsh mining, tunneling, and quarrying environments—where dust, moisture, and extreme vibration are constant—it prevents contamination of internal parts and resists impact damage, directly extending the service life and reliability of your Montabert rock drill.

• Genuine Montabert Precision for Dual-Model Compatibility
• Heavy-Duty Structural Durability for Mining Operations
• Hydraulic Sealing & Debris Protection
• Optimized Design for Maintenance Efficiency

The 86374055 Cover is an indispensable replacement part for your Montabert rock drill in all core operational scenarios:

• Protecting the impact system of Montabert HC50/HC120 rock drills during underground mining blasting hole drilling (up to 35m depth) in hard-rock formations like granite and basalt.
• Securing internal components of Montabert HC50/HC120 rock drills used for tunnel anchor and support hole drilling in wet, dusty infrastructure construction projects.
• Maintaining hydraulic integrity of Montabert HC50/HC120 rock drills in quarrying applications for stone cutting, rock excavation, and pre-splitting tasks.
• Restoring factory-spec protection and performance during full overhauls or front-end component replacement of Montabert rock drills.