Split Pin Drive Master Bushing

This product is Model 1808 Split Pin Drive Master Bushing, a key supporting component for rotary tables of oil drilling rigs. It complies with API Spec 7K. Installed inside the rotary table, it carries insert bowls and transmits rotary torque via pin drive to rotate the drill string. The two-piece split design allows lateral opening, so it does not need to be pulled out from the top of the drill string when running or pulling large-size casings and drill strings. It is widely used in oil & gas drilling, engineering drilling and water well drilling to greatly improve the efficiency of casing running and tripping operations.Matched with rotary tables of corresponding specifications. Compatible with a full range of insert bowls for rotary drilling and casing running of drill pipes, drill collars, casings and other tubulars, suitable for onshore drilling sites.

Main Body: Two-piece forged housing. Split locking pins at both ends realize opening, closing and locking. The forging is integrally machined, with precision finished drive pin holes, locating grooves and lifting holes. 

Pin Drive Structure: The mating surfaces for drive pins are machined per API standards for reliable torque transmission. 

Locating Groove: Internal groove restrains and fixes the insert bowl to prevent rotation and floating.