Floating Cushion Subs

PD-6        306130     306430      COMPARISONS

The floating cushion sub performs two important functions; it provides a means of making up and breaking threaded connections on casing and drill pipe and it also prolongs bearing and gear life in the top drive rotary box.

By incorporating a certain amount of axial movement below the drill's rotary drive spindle, the sliding spindle of the cushion sub will allow the threads of the mating drill string components to float together or apart during rotation without any axial movement of the rotary head.

The allowable movement of the sliding spindle decreases the impact on the rotary drive when the two mating threads are stabbed together and it also decreases the load on the flanks of the threads of the mating components.

FLOATING CUSHION SUBS

* SLIDING SPINDLE
* REDUCED MAINTENANCE
* DO REPAIRS/REBUILDS ON SITE
* NO CAROUSEL OR DRILL MODIFICATIONS
* NO AIR FLOW RESTRICTION
* REDUCED MAINTENANCE COSTS
* SHOCK REDUCTION