The 86733243 Retainer Shank is a critical load-bearing and alignment component exclusively engineered for the Montabert HC25 rock drill. As a genuine Montabert original part, it serves as the precise interface between the drill’s impact piston and drill bit, ensuring 100% transfer of the HC25’s impact energy (up to 12 kJ per cycle) while maintaining perfect centering of the bit during high-vibration drilling.

This component is manufactured to Montabert’s strict factory specifications, guaranteeing a seamless drop-in fit and preserving the drill’s original performance. It prevents metal-to-metal wear between the piston and bit, and shields internal components from rock debris—making it essential for keeping your Montabert rock drill running reliably in harsh mining and tunneling environments.

• Genuine Montabert Precision for Montabert Rock Drill
• High-Impact Durability for Demanding Montabert Rock Drill Use
• Precision Alignment & Sealing for Montabert Rock Drill
• Debris Resistance for Harsh Montabert Rock Drill Environments

The 86733243 Retainer Shank is indispensable for keeping your Montabert rock drill operational in the most critical applications:

• Powering Montabert HC25 rock drills for underground mining blasting hole drilling (up to 25m depth) in hard-rock deposits.
• Driving Montabert HC25 rock drills for tunnel anchor and support hole drilling in infrastructure projects.
• Enabling Montabert HC25 rock drills to perform quarry stone cutting and pre-splitting drilling tasks.
• Restoring full impact power during overhauls and routine maintenance of Montabert rock drills—replacing worn, deformed, or damaged original retainer shanks.