Description

MASTER BUSHINGS-KELLY BUSHINGS-MASTER BUSHING ACCESSORIES MASTER BUSHINGS Our company supply the master bushings and insert bowls with the size from **1/2 to **1/2 inch. They are cast with high-quality alloy steel and the sizes conform to API Spec 7K. There are two kinds of type. pin drive and square drive. API standard rotary slip, drill collar slip, casing slip or roller Kerlly bushing can be contained in them. MASTER BUSHING ACCESSORIES Bit Breaker Adapter Plates are located in the Master Bushing drive pin holes and provide a **9/*6 inch square to accommodate Bit Breakers. They are used for MPCH, MSPC, MDSP and MSP.P/N:***6 use for *****1/2 inch master bushing; P/N ***5 use for **1/***1 inch master bushing.Lifting Sling for removing and installing bushings and insert bowlsWith 2 hooks P/N***1 for removing and installing insert bolwsWith 4 hooks P/N***9 for removing and installing bushingsBit breakers are mostly used for screwing standard *-cone bit. ROLLER KELLY BUSHINGS Roller Kelly Bushings are used for **1/****1/2 inch rotary tables. They are designed and manufactured according to API Spec 7K.