ADJUSTER

550 382 39D ADJUSTER This adjuster is used to set and hold the tension of the feed chain or cables on the drill's feed beam. It allows a technician to compensate for normal chain stretch over time, ensuring the drifter is advanced with consistent force. Without correct tension, the feed motion can become jerky, leading to poor bit contact with the rock and slower penetration rates.

Maintaining the right feed tension is essential for the reliability of the entire feed system. An improperly set adjuster can cause excessive wear on the feed motor, sprockets, and the chain itself. For instance, a feed chain that is too loose will slap against the feed beam, creating noise and shock loads that accelerate wear. A correctly functioning adjuster helps prevent these issues, leading to less downtime for feed system repairs.

During routine maintenance, check the adjuster for any signs of damage, like stripped threads or cracks. If you notice the feed chain is constantly losing tension or the adjuster is difficult to turn, it may need replacement. Always release the chain tension before attempting to remove the old unit.