Threaded directly into the drive spindle of the rotary gear box, the Foremost Cushion Connector will assist in protecting the rotary drive and mast assemblies against both torsional and axial vibrations/shock loading in moderate and extreme drilling conditions. The results will be reduced drill maintenance, increased drill availability and lower production cost.

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FUNCTION & APPLICATION

Disc springs are utilized within the connector assembly to allow for a certain amount of axial  movement between the drill stem and the rotary drive. The disc springs will accommodate operating loads in excess of 120,000 pounds in most cases. This assists in keeping the tri-cone bit in continuous contact with the formation thereby reducing the possibility of fracturing or breaking the tungsten carbides inserts of the bit. Urethane drive blocks located within the connector assembly serve to provide 100% transfer of rotary torque from the drive spindle to the drill stem as well as absorb torsional vibration transferred by the bit.