JOT manufactures Master Bushing 37½" Hinged Type Pin Drive suitable for 37½" to 49½" Rotary table for offshore &
onshore drilling operation to provide rotational force to drill string. It is equipped with standard Bowl No. 3 & optional
Bowl No. 1 & 2 with taper as per API Specifications to accommodate 2-3/8" to 13-3/8" O.D of Drill Pipes, Drill collars &
tubular to handle up to the load of 500 tons. Torque Rating: 32362 Nm at 300 RPM.

The JOT-MB is incorporated with Bowl lock assembly that lock the Bowls. It is designed in hinged type that can be
removed easily from Rotary Table, facilitate to pass large Diameter Bits and Tubular directly through Rotary Table.

MASTER BUSHING ACCESSORIES :
Lifting Slings - Chain type with four hooks for Master Bushing & Two Hook for Bowl for lifting purpose.

BIT BREAKER ADAPTER PLATE :
To accommodate different sizes of Bit Breakers for Makeup –Breakup of Bits.

INSERT BOWLS :
API Insert Bowl No 1, 2 & 3 to handle tubular.

        Master Bushing 37-1/2" Hinge type Pin Drive (Square Drive) for 37-1/2" rotary table is developed for off-shore & On shore drilling operations. Suitable for Oil well Rotary Table. JOT Master Bushing 37-1/2" is capable to handle 2-3/8" through 13-3/8 inch tubular. drill pipe, drill collars, tubing and casing to handle load upto 500 tons. JOTMB with a hinged design to can be removed from the rotary table to pass large diameter bit and pipe connections directly through the Rotary table, The Master Bushing is equipped with insert bowl No.1, 2 & 3 JOTMB is Square type to fit into the rotary table directly & Eccentric Locking assembly is provided to lock the bowls into the bushing.

Master Bushing 37-1/2" Hinge type Pin Drive (Inner latch Drive) for 37-1/2" rotary table is developed for off-shore & On shore drilling operations. Suitable for EMSCO Rotary Table.

MASTER BUSHING-MODEL-JOTMB-3750
Figure No. 2

MASTER BUSHING ACCESSORIES :
Lifting Slings - is equipped with a four hook with chain for lifting purpose.

JOT manufactures Master Bushing Pin Drive Solid Body suitable for 27½"and 20½" API Rotary Table, it is equipped with
standard Bowl No. 3 and optional Bowl No. 1 & 2, to accommodate tubular from 2-3/8" to 13-3/8" with the help Insert Bowls,
having a maximum Handling capacity of 500 Tons string load. Torque Rating: 27459 Nm at 300 RPM.

The JOT-MB is incorporated with Bowl lock assembly that lock the Bowls, MB have locking type drive hole bushes system to lock the Kelly Bushing and Power Slip Lifter. The Pin Drive Master Bushing allows the Kelly Bushing to fit on the top of the master bushing and makes possible to use extended Split Bowls while the Kelly Bushing is in operation.

Master Bushing Accessories:
is supplied along with the following :-
   1. Lifting Sling: Two hooks type for Master Bushing & Two hooks
       chain type for Bowl for lifting purpose.
   2. Bit Breaker Adapter Plate: To accommodate different sizes of
      Bit Breakers for Makeup –Breakup of Bits.
   3. Insert Bowls: API Insert Bowl 1, 2 & 3 to handle tubular.
     These Master Bushing are provided with locks to secure the bowls        into the bushings.

Master Bushing Split type accommodate API Insert Bowl No. 1, 2 & 3 to handle tubular size from 2-3/8" to 13-3/8", Master Bushing having 4 Nos of drive hole bushes to lock the Kelly Bushing with the help of eccentric Drive Pin and Bowl lock assembly to lock the Bowl in the split Bushing. Lifting Sling 2 Hook type to lift Master Bushing and Bowls & Bit Breaker Adapter plate are provided.

JOT Manufactures Master Bushings Split type in two design, Pin Drive and Square Drive. Aailable sizes & Model : MB 27 1/2", MB 20 1/2", MB 17 1/2" for suitable rotary table. Master Bushings are provided itself taper of Bowl No. 3 which makes slip handling easier and distributes the load uniformly in the bushing resulting in less wear & tear and passes large diameter bits & tools.

is supplied along with the following :-
1. Bit Breaker adapter plate.     2. Lifting Slings.

Master Bushing Square drive Size 17 1/2" & 27 1/2" JOTMB-2750 SS is used for all drilling operations up to 10000 feet. To accommodate Square Drive Kelly Bushing, Master bushings are provided itself an extended API taper in the master bushing, This makes Rotary slip handling easier. Master Bushing is supplied with lifting Slip.

JOT MB - 2750 SS  

Is supplied along with the following :-
1. Insert bowl No. 3.
2. Lifting Slings.

HAVING ITSELF TAPER OF BOWL NO. 3 ALONG WITH LIFTING SLING

is supplied along with the following :- 1. Bit Breaker Adapter Plate.       2. Lifting Slings.

Note : Other sizes of Master Bushing to Suit Rotary Table can be made against order.