Oilfield Wellhead Equipment Tubular Handling Tools Pin Drive Roller Kelly Bushing
Roller Kelly Bushings can be classified as two types based on different ways of drive, square drive and pin drive. Also they can be classified as three types based on different style, heavy, medium and light-duty. They are used for 17 1/2 to 49 1/2inch rotary tables. They are designed and manufactured according to API Spec 7K.
Features of Roller kelly bushing:
1. Roller kelly bushing is a necessary tool for drilling.
2. It is to drive kelly spinner by matching with master bushing. Through rotating of four rollers, the friction between rollers and kelly pipe is reduced and service life is extended.
3. For different sizes of kelly pipe and hexagonal pipe only need to change corresponding rollers.
To connect with rotary table, there are two transmission styles (square and pin).
4.The product is designed and manufactured according to API Spec 7K “Specification for Drill Equipment.
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