4040201 MPCH

The 37 1/2" MPCH is a Pin Drive Hinged Master Bushing specially designed for floating and semi-submersible drilling operations.

With insert bowl No. 3 and optional insert bowls No. 1 and No. 2, the MPCH will handle tubulars from 2 3/8" to 13 3/8" OD.Unit comes complete with No. 3 insert bowl, bit breaker adapter plate and lifting sling.

Weight complete 4200 lbs (1905 kg); body only 3200 lbs (1452 kg)

MPCH Master Bushing

MPCH Master Bushing with 3# Bowl and SDXL Slips

4040202 MDSP

17 1/2" and 20 1/2" Medium Duty Pin Drive Split Master Bushing are designed for shal low to medium depth service.

Extended API Taper
The MDSP Master Bushings have an extended APT 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 : Varco BJ does not recommend using split master bushings in rotary tables with more than 3/16" (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.

4040203 MSP 27 1/2" Split Pin Drive Bushings

Description
MSP 27 1/2" Split Pin Drive bushings are also available. With the larger rotary opening the standard No. 3 Extended API taper is used. This allows the use of extra-long SDXL slips required for heavier loads. Weight 1600 lbs (726 kg).

4040204 MSPC Master Bushing
20 1/2" through 27 1/2"

Description
The 20 1/2" thru 27 1/2" MSPC is a solid Body Pin Drive Master Bushing designed for all drilling operations. The pin drive allows the kelly bushing to ride on top of the rotary table and permits extended bowls to be used for better slip back up. With the extended API insert bowl No. 3, the MSPC will handle tubulars from 2 3/8" to 13 3/8".
Unit comes with No. 3 insert bowl, bit breaker adapter plate and lifting sling.
For Rotary Table Size MSPC Weight lbs (kg):

20 1/2"& 21 complete, 1210 (549); body only 570 ( 259)
23 complete 1490 (676); body only 646 (293)
25-27 1/2" complete 1965 (891); body only 1110 (503)

4040205 MSS

17 1/2 thru 27 1/2 Solid Body Square Drive Master Bushing is designed for all drilling opetions. A 4 inch deep recess accommodates a square drive kelly bushing. Developed for use when a 10,000 ft well was considered deep, the MSS still serves a useful purpose where a large slip backup area is not required. With the extended API insert bowl No.3, the MSS will handle 2 3/8 thru 8 5/8 inch OD Drill pipe, drill collars, tubings, and casing. Insert bowl No.2 can handle tubular goods 9 5/8 and 10 3/4 inches OD. The MSS design, with its solid body, retains the correct API taper for medium and short rotary slips (Varco's SDML and SDS) under all load conditions. These slips receive correct backup and hold tubulars uniformly. The solid outer body takes all transverse loads and provides proper backing for the split inserts bowls allowing the rotary table to rotate freely, unipaired by transverse loads.

4040206 Master Bushing Accessories

Bit Breaker Adapter Plate locates in the Master Bushing drive pin holes and provides a 13 9/16 inch square to accommodate bit Breakers.

Lifting Slings for removing and installing bushing and bowls.