Master Bushings & Bowls

* To print tables please download PDF

• Pin Drive Master Casing Bushings
• Square Drive Master Bushings
• Master Bushings Parts List & Components

 

Pin Drive Master Casing Bushings

Solid Body - Split Body - Hinged

49 1/2" HMB
27 1/2" SPB
27 1/2" SMB

The Den-Con R-750 Hinged Master Bushing is available for 49 1/2” - 60 1/2” rotaries, and is rated for 750 tons. See page 3 for additional information.
The Den-Con HMB Hinged Pin Drive Master Casing bushing is available for 37 1/2” and 49 1/2” rotary tables. Split insert bowls of various bore diameters are available to allow handling capability for 2 3/8 ” to 13 3/8 ” tubular products. The HMB can easily be removed from the drill string by removal of one hinge pin. The Den-Con 27 RPH Roller Kelly Bushing is the drive bushing used with HMB. 49 1/2” x 37 1/2”.
The Den-Con SPB Solid Body Pin Drive master casing bushing is available for 20 1/2” to 27 1/2” rotary tables. Split insert bowls of various bore diameters will allow handling capability for 2 3/8 ” to 13 3/8 ” tubular products. Refer to parts tables for casing bowls and sizes.
The Den-Con SMB Split Pin Drive master bushing is available for 17 1/2”-27 1/2” rotary tables. The SMB is a split master bushing with the API taper machined into the body halves. This bushing is a split design to eliminate the need to strip over the master bushing while running large tools during surface hole work. Pin drive hole locations are to API dimensions.
All Den-Con Master Casing Bushings are rated at 500 tons. R-750 is rated 750 tons.
The Den-Con HMB Assembly, Parts and Bowls are interchangeable with Varco MPCH Bushings.
The Den-Con SPB Assembly, Parts and Bowls are interchangeable with Varco MSPC Bushings.

Ordering Information
Specify rotary table make, size and type when ordering.
Den-Con also manufactures a 37 1/2” X 27 1/2” adapter rings, various 49 1/2” x 37 1/2” adapter rings and 60 1/2” adapters.

ROTARY TABLE  
 MAIN ASSEMBLY NUMBERS
HMB HINGED
SPB
SOLID PIN DRIVE
SMB
SPLIT PIN DRIVE
SSB
SOLID SQUARE DR.
SSD
SPLIT SQUARE DR.
17 1/2”
3315
2501
2522
20 1/2”
2525
3309
2502
2523
23”
3325
3320
2503
2521
27 1/2”
2526
3300
2504
2524
37 1/2” - 49 1/2”
2700
49 1/2” - 60 1/2”
8011

 

HMB ORDERING INFORMATION
W/ #33 Bowl,
Sling & BB Plate		 ADAPTER RINGS* NATIONAL & ABC0 OILWELL & G.D. EMSCO LTI IDECO WIRTH
PART #
WT. LBS.
PART #
SIZE
37 1/2” -
49 1/2”
37 1/2” -
49 1/2”
37 1/2” (S/N 49 UP) -
49 1/2”
37 1/2” -
49 1/2”
37 1/2” -
49 1/2”
37 1/2” -
49 1/2”
2700-1 4050 2763 49 1/2” - 37 1/2”            
2700-2 4250 2763-2              
2700-3 4150 2763-3 49 1/2” - 37 1/2”            
2700-4 4015 2763-4 —            
2700-5 4320 — —            
    2759 37 1/2” - 27 1/2”            
2700-6 4050 2763-6              

*See Adapter Ring Data Table for additional details and configurations.


Square Drive Master Bushings

27 1/2" SSD

The Den-Con SSB Solid Body Square Drive Master Bushing is available for 17 1/2” to 27 1/2” rotary tables. The drive square is the same API dimension found in all square drive master bushings. The SSB is designed with removable insert bowls.
The Den-Con SSD Split Square Drive Master Bushing is designed as a replacement bushing for all original O.E.M. manufactured bushings. This bushing is available for 17 1/2” to 27 1/2” Rotary Tables. All bushings have the standard API taper to handle 8 5/8” and smaller tubular products.

Pin Drive & Square Drive Bushings (17 1/2" - 27 1/2")

ORDERING INFORMATION - DASH NUMBER

COMPLETE ASSY. PART #

NATL/ABCO

OILWELL

GARDNER-DENVER

API

LTI

UNIT RIG
SPB SMB SSB SSD 17.5” 20.5” 27.5” 17.5” A17.5” A20.5” 21A 20.5” 26HD A&B
27.5”		 27.5” RT17.5” 22.5” RT27.5” 17.5” 20.5” 27.5”     27.5” 17.5” 521A 27.5”
  3315-1 2501-1 2522-1                                            
  3315-2 2501-2 2522-2                                            
  3315-3 2501-3 2522-3                                          
  3315-4 2501-4 2522-4                                            
  3315-5 2501-5 2522-5                                              
  3315-6 2501-6 2522-6                                            
  3315-7 2501-7 2522-7                                              
  3315-8 2501-8 2522-8                                            
2525-1 3309-1 2502-1 2523-1                                          
2525-2 3309-2 2502-2 2523-2                                            
2525-3 3309-3 2502-3 2523-3                                              
2525-4 3309-4 2502-4 2523-4                                          
2525-5 3309-5 2502-5 2523-5                                              
3325-1 3320-1 2503-1 2521-1                                              
3325-2 3320-2 2503-2 2521-2                                              
3325-3 3320-3 2503-3 2521-3                                            
2526-1 3300-1 2504-1 2524-1                                            
2526-2 3300-2 2504-2 2524-2                                        
2526-3 3300-3 2504-3 2524-3                                            
2526-4 3300-4 2504-4 2524-4                                              
2526-5 3300-5 2504-5 2524-5                                              
2526-6 3300-6 2504-6 2524-6                                            
2526-7 3300-7 2504-7 2524-7                                              
2526-8 3300-8 2504-8 2524-8                                            
2526-9 3300-9 2504-9 2524-9                                              

COMPLETE ASSY. PART #

EMSCO

IDECO

BREWSTER*
SPB SMB SSB SSD T1750 O17.5 P17.5 T2050 20.5J, JA, JAS, JC, JAC,
JCS, JACS, PJL		 T2750 27.5H 27.5K, KS, PJ 20.5JB, JAB, JABS, JBS 17.25” 17.5” 20.5” 23” 27.5” 18” 22RSH 27.5”
  3315-1 2501-1 2522-1                                  
  3315-2 2501-2 2522-2                                  
  3315-3 2501-3 2522-3                              
  3315-4 2501-4 2522-4                                
  3315-5 2501-5 2522-5                              
  3315-6 2501-6 2522-6                                
  3315-7 2501-7 2522-7                                  
  3315-8 2501-8 2522-8                                  
2525-1 3309-1 2502-1 2523-1                              
2525-2 3309-2 2502-2 2523-2                                
2525-3 3309-3 2502-3 2523-3                                
2525-4 3309-4 2502-4 2523-4                                  
2525-5 3309-5 2502-5 2523-5                                  
3325-1 3320-1 2503-1 2521-1                                
3325-2 3320-2 2503-2 2521-2                                
3325-3 3320-3 2503-3 2521-3                                  
2526-1 3300-1 2504-1 2524-1                                  
2526-2 3300-2 2504-2 2524-2                                
2526-3 3300-3 2504-3 2524-3                                  
2526-4 3300-4 2504-4 2524-4                                  
2526-5 3300-5 2504-5 2524-5                              
2526-6 3300-6 2504-6 2524-6                                
2526-7 3300-7 2504-7 2524-7                                
2526-8 3300-8 2504-8 2524-8                                  
2526-9 3300-9 2504-9 2524-9                                  

*Use API Standard Bushing for RSB Series Tables


Master Bushings Parts List & Components

Drive Hole Bushing Replacement-Pin Drive Bushings.

REMOVAL
1. Using an Acetylene torch, split worn bushings from top to bottom, in two place approximately
180 degrees apart.
2. Clean out drive holes, remove any rust and deburr the top edge.
Note: Place new drive hole bushing in a freezer to shrink.
INSTALLATION
1. Preheat the Master Bushing body around the drive hole area to 400-500°F.
2. Take drive hole bushing from freezer and place bushing in ice until ready to install.
3. Press drive hole bushing, chamfered end up, until flush with top of master bushing body.
4. If no press is available, make sure Master Bushing drive hole area is at the proper temperature.
Drive the drive hole bushing with a wooden block to seat drive hole bushing. Drive as rapidly
as possible using a sledge hammer.

Den-Con Master Bushing Parts List

QTY. REQ’D.
DESCRIPTION
37 1/2” HMB
27 1/2” SPB
20 1/2” SPB
27 1/2” SSB
23” SSB
20 1/2” SSB
17 1/2” SSB
27 1/2” SMB
20 1/2” SMB
R-750
1
Assy.
2700
2526
2525
2504
2503
2502
2501
3300
3309
8011
1
Body Only
2701
2528
2527
2508
2507
2506
2505
3301
3309
8011
4
Drive Hole Bushing
2713
2535
2534
2535
2534
2713
1
Hinge Pin, Removable
2711
8047
1
Hinge Pin, Stationary
2709
8046
1
Hinge Pin Retainer
2715
2715
2
Lock
2541
2541
2543
2514
2514
2514
2541
2
Eccentric Pin
2542
2542
2544
2515
2515
2515
2542
2
Retaining Pin, Lock
50106-24
50106-24
50106-20
50104-10
50104-10
50104-10
50106-24
1
Bit Breaker Plate
2537
2537
2536
2537
2536
8022
1
Lifting Sling
2712
2511
2511
2511
2511
2511
2511
2511
2511
8023

INSERT BOWLS - STANDARD SLIPS
1 Set
API Bowl, 8 5/8” & Smaller Pipe
2706
2530
2529
2546XT 2510
2545XT 2509
2545XT 2509
2545XT 2509
8018
1 Set
No. 32 Bowl,
10 3/4” & 9 5/8” Casing
2707
2532
2531
2547XT
8019
1 Set
No. 31 Bowl,
13 3/8” & 11 3/4” Casing
2708
2533
2548XT
8020

See the Rotary Equipment Data Table for R-750 Bowls and Slips detail.