• MDSP-SERIES Master Bushing

    17 1/2 in and 20 1/2 in Medium Duty Pin Drive Split Master Bushing (MDSP) are designed for shallow to medium depth service.

    Description

    Tool, where applicable, updated in accordance with governing API standards

    17 1/2 in and 20 1/2 in Medium Duty Pin Drive Split Master Bushing (MDSP) are designed for shallow to medium depth service.

    Extended API Taper:

    The MDSP Master Bushings have an extended API taper in the bowls that provides 50 % more slip support than do square drive bushings. Varco SDML slips, used in the MDSP master bushing are a proven combination that can handle drilling to 15,000 feet. Note : National Oilwell Varco BJ does not recommend using split master bushings in rotary tables with more than 3/16 in (5 mm) wear in the rotary table bore. Rebuild rotary bore or purchase a solid type bushing. Units come complete with bit breaker adapter plate and lifting sling.

    Features/Benefits

    Weight lbs (kg):

    17 1/2 in complete, 737 (334); body only 577 (262)

    20 1/2 in complete, 1100 (499); body only 924 (419)