CLUTCH HUB

315 139 08 CLUTCH HUB Positioned within the gear housing of the rock drill, this CLUTCH HUB assembly connects the rotation motor to the gear train. Its primary function is to transmit torque, allowing the drill bit to turn effectively. It also serves a protective role, designed to slip under sudden, extreme torque loads, which prevents catastrophic damage to the rotation motor and gears if the drill string gets jammed.

A worn CLUTCH HUB directly impacts drilling performance and rig availability. Symptoms of wear include a noticeable loss of rotation power, inconsistent turning speed under load, or the drifter struggling to break threaded rod joints. If the CLUTCH HUB fails completely, rotation stops, bringing the entire drilling operation to a halt and requiring immediate, often difficult, field service.

During a drifter rebuild, always inspect the CLUTCH HUB components for signs of glazing, heat damage, or excessive wear. If you hear a whining or grinding noise from the drifter during rotation, it could be an early warning of CLUTCH HUB failure. Replacing the CLUTCH HUB assembly with the correct part is essential for restoring performance and preventing more extensive damage.