Each of these two models has a positive table lock. The spiral bevel ring and pinion gears are machine cut and flame hardened. The bed is heavy box type construction with ample overload capacity for shock loads and rough drilling.
MODEL 17.5 is a heavy duty rotary table designed to take 41/2" drill pipe down to 12,000 ft. Features include high quality bearings on the pinion shaft as well as angular ball thrust bearings serving as the main and upthrust bearing. The spiral ring and pinion gears are heat treated and lapped. The pinion shaft also has an adjustable locking device. The 17.5 table can be furnished with 44" through 531/4" centers.
MODEL 27.5 is Hacker's largest rotary table. It incorporates the same tough components and superior design as the rest of the Hacker line. Power is transmitted through heat treated and lapped spiral gears. It has a heat treated pinion shaft, heavy duty pinion shaft bearings and adjustable pinion shaft locking assembly. Main and upthrust bearings are angular ball thrust type. Each 27.5 table is furnished with 531/4" centers and can drill to 18,000 ft.
Both rotary
models 17.5 and 27.5 have two separate lubrication reservoirs with separate
fill and drain plugs.
