Boart Longyear

Head Assemblies

The head assembly provides: latching and pivoting spearpoint mechanisms to allow insertion and retrieval of the inner tube assembly, a bearing assembly to allow the inner tube to remain stationary and avoid sample damage while drilling, fluid pressure operating indications and fluid control valves. All head assemblies incorporate a shut off valve assembly which provides a fluid pressure signal to the drill operator when the valve members are compressed, indicating a full or blocked inner tube.

A key component of both the Quick Descent™ and the Quick Pump-in™ Head Assemblies is the new Spearpoint head , which has patented technology, which provides increased durability and safe use.
Click to learn more about the new Spearhead.