MASTER BUSHING HINGED TYPE PIN DRIVE

JOT-MB-3750 MODEL for NATIONAL, EMSCO, Oil Well & all other Rotary Tables 

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.

 

 

 

JOT-MB-3750 & JOT-MB-3750-SQ PARTS LIST

(All the spares are interchangeable with Varco MPCH Master Bushing spares)

Description JOT Part No. For EMSCO JOT PART No For Oil Well JOT Part No. Identical Varco PART No. Req.Qty Per set
1 Bare Body segment with Half Sleeves with latch J35710-E J35710-SQ J35710 - 2 no
2 Hinge Pin-Removable (with handle) J35711-E J35711-SQ J35711 6604 1 no
3 Hinge Pin Retainer J35711-A-E J35711-A-SQ J35711-A 6606 1 no
4 Hinge Pin-Stationary  (with retainer) J35712-E J35712-SQ J35712 6605 1 no
5 Bowl lock assembly J35714-E J35714-SQ J35714 - 2 no
6 Eccentric Pin J35714-A-E J35714-A-SQ J35714-A 1014  
7 Eccentric Pin Lock J35714-B-E J35714-B-SQ J35714-B 1016  
8 Eccentric Pin Retainer J35714-C-E J35714-C-SQ J35714-C 50106-22  
9 Drive Hole Bushing J35715-E J35715-SQ J35715 3699 4 no

Other Components to be supplied with set
10 Lifting sling J35716-E J35716-SQ J35716 6699 1 no
11 Bit breaker plate J3717-E J35717-SQ J35717 1816 1 no
12 Insert Bowl No: 1 13-3/8" & 11-3/4" J35751-E J35751-SQ J35751 6610 any one
13 Insert Bowl No: 2 10-3/4" & 9-5/8" J35752-E J35752-SQ J35752 6609
14 Insert Bowl No: 3 API 8-5/8" J35753-E J35753-SQ J35753 6608

 

 

 

MASTER BUSHING SOLID BODY PIN DRIVE 

JOT-MB MODEL -2750PS & JOT-MB-2050PS

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:

  • Lifting Sling: Two hooks type for Master Bushing & Two hooks chain type 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 1, 2 & 3 to handle tubular. These Master Bushing are provided with locks to secure the bowls  into the bushings.

      

 

SOLID BODY PIN DRIVE MASTER BUSHING PART LIST No. : 

(Interchangeable with Varco MSPC) 

S.No. Description Req. Qty.
Per Set		 Part No. For 
JOTMB 2750 PS		 Part No. For 
JOTMB 2050 PS
1. Bare body segment One 25751-PS 25051-PS
2. Bowl Lock Assy. Two 25752-PS 25052-PS
3. Drive Hole Bushing Four 25753-PS 25053-PS
4. Lifting Sling One 25754-PS 25054-PS
5. Bit Breaker Plate One 25755-PS 25055-PS
6. Insert Bowl No.1 For 11.3/4" To 13.3/8" Tabular
Insert Bowl No.2 For 9.5/8 To 10.3/4" Tabular
Insert Bowl No.3 For 2.3/8" To 8.5/8" Tabular		 1 no.
any one		 25756-PS -
25757-PS 25057-PS
25758-PS 25058-PS

 

MASTER BUSHING SPLIT TYPE PIN DRIVE WITH BOWL SUITABLE FOR 27 1/2" ROTARY TABLE AND ITS PARTS LIST : 

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.   

 
S.No. DESCRIPTION Req. Qty. Per Set Part No. For JOT-MB 2750 PSP - 3
1 Master Bushing Bare body One 27551 - PSP - 3
2 Bowl Lock Assembly Two 27552 - PSP - 3
3 Drive Hole Bushing Four 27553 - PSP - 3
4 Lifting Sling One 27554 - PSP - 3
5 Bit Breaker Plate One 27555 - PSP - 3
6 Insert Bowl No.1
Insert Bowl No.2
Insert Bowl No.3		 1 No. (Any One) 27556 - PSP - 3
27557 - PSP - 3
27558 - PSP - 3

 

MASTER BUSHING MEDIUM DUTY PIN DRIVE & SQUARE DRIVE SPLIT
JOT MB MODELS :
JOT-MB -2750 PSP MODEL     JOT-MB-2050 PSP MODEL
 
JOT-MB-1750 PSP MODEL      JOT-MB-2750 SSP MODEL

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. 

MASTER BUSING SPLIT PIN DRIVE MODELS : 

JOT-MB - 2750 PSP, JOT-MB - 2050 PSP, JOT-MB - 1750 PSP 

is supplied along with the following :-  

  1. Bit Breaker adapter plate.    
  2. Lifting Slings. 

 

 

 

SPLIT BODY PIN DRIVE MASTER BUSHING PART LIST No. : 

(Interchangeable with Varco MSP & MDSP) 

S. No. Description Req. Qty.
Per Set.		 Part No. for
JOTMB 2750 PSP		 Part No. For
JOTMB 2050 PSP		 Part No. For
JOTMB 1750 PSP
1. Bare body segment Half Two 25751-PSP 25051-PSP 15751-PSP
2. Drive Hole Bushing Four 25753-PSP 25053-PSP --
3. Lifting Sling One 25754-PSP 25054-PSP 15754-PSP
4. Bit Breaker Plate One 25755-PSP 25055-PSP 15755-PSP

 

SPLIT BODY SQUARE DRIVE MASTER BUSHING SUITABLE FOR 27-1/2" ROTARY TABLE 

JOT - MB MODELS : JOT-MB - 2750 SSP, JOT-MB - 1750 SSP 

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.
S. No. DESCRIPTION Req. Qty. Per Set PART No. FOR JOT-MB 2750 SSP PART No. FOR JOT-MB 1750 SSP
1. Master BushingBare Body Two 25751-SSP 15751-SSP
2. Lifting Sling One 25754-SSP 15754-SSP