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 The Washington Series 1500 is
specifically designed for geothermal drilling applications requiring the stripping of
multiple diameter drill strings. The upper rubber rotates with the drill string and
seals the kelly and drill pipe, while the lower rubber is stationary and is used to seal
on larger diameter drill string components (drill collars). All elastomer components
are manufactured for high temperature service. Tools up to 12-1/4" can pass through the lower rubber, and tools of up to 8" or 9" can pass through the upper rubber depending on the sleeve bore of your rotating assembly. Rotating assemblies are manufactured with an 8-1/8" or 9" sleeve bore. The lower rubber is changed by removing the bearing carrier thus exposing the lower rubber. The lower rubber is then removed from the air bowl. Quick release clamps enable easy removal of both the rotating assembly and bearing carrier. Both a non-circulating and a recirculating lubrication systems are available. The 1500 Series Rotating Assembly is manufactured with dual lubrication ports for use with either lubrication system. Washington Rotating' "Recirculating Lubrication System" (1019-REC) can be plumbed to a heat exchanger or chiller to cool the oil before it is returned to the rotating assembly thus helping to keep rotating components cool. The drill must have at least a 27-1/2" rotary table or larger to pass the bearing carrier. Call or send us your inquiry for pricing. |