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

pin drive master casing bushings

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” x          
2700-2 4250 2763-2     x       x
2700-3 4150 2763-3 49 1/2” - 37 1/2”     x      
2700-4 4015 2763-4         x  
2700-5 4320            
    2759 37 1/2” - 27 1/2”            
2700-6 4050 2763-6         x    

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


Square Drive Master Bushings

square drive master bushingThe 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.

 

 

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 49 1/2" HMB
1 Assy. 2700 2526 2525 2504 2503 2502 2501 3300 3309 8011
1 Body Only 2701 2528 2527 2508 2507 2506 2505 3302 3309 8011
4 Drive Hole Bushing 2713 2713 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 49 1/2" Bowls and Slips detail.

 

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 x                                            
  3315-2 2501-2 2522-2       x                                      
  3315-3 2501-3 2522-3                       x     x                
  3315-4 2501-4 2522-4         x                                    
  3315-5 2501-5 2522-5                                              
  3315-6 2501-6 2522-6                                         x    
  3315-7 2501-7 2522-7                                              
  3315-8 2501-8 2522-8                               x              
2525-1 3309-1 2502-1 2523-1   x       x                                  
2525-2 3309-2 2502-2 2523-2               x                              
2525-3 3309-3 2502-3 2523-3                                              
2525-4 3309-4 2502-4 2523-4             x                             x  
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                         x                    
2526-1 3300-1 2504-1 2524-1     x                                        
2526-2 3300-2 2504-2 2524-2                 x         x     x            
2526-3 3300-3 2504-3 2524-3                   x                          
2526-4 3300-4 2504-4 2524-4                                              
2526-5 3300-5 2504-5 2524-5                                              
2526-6 3300-6 2504-6 2524-6                                     x      
2526-7 3300-7 2504-7 2524-7                                              
2526-8 3300-8 2504-8 2524-8                                             x
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   x x                            
  3315-4 2501-4 2522-4 x                                
  3315-5 2501-5 2522-5                   x x            
  3315-6 2501-6 2522-6                             x    
  3315-7 2501-7 2522-7                                  
  3315-8 2501-8 2522-8                                  
2525-1 3309-1 2502-1 2523-1       x               x          
2525-2 3309-2 2502-2 2523-2         x                        
2525-3 3309-3 2502-3 2523-3                 x                
2525-4 3309-4 2502-4 2523-4                                  
2525-5 3309-5 2502-5 2523-5                                  
3325-1 3320-1 2503-1 2521-1                         x        
3325-2 3320-2 2503-2 2521-2                               x  
3325-3 3320-3 2503-3 2521-3                                  
2526-1 3300-1 2504-1 2524-1                                  
2526-2 3300-2 2504-2 2524-2           x                      
2526-3 3300-3 2504-3 2524-3                                  
2526-4 3300-4 2504-4 2524-4                                  
2526-5 3300-5 2504-5 2524-5             x x           x      
2526-6 3300-6 2504-6 2524-6                                
2526-7 3300-7 2504-7 2524-7                                 x
2526-8 3300-8 2504-8 2524-8                                  
2526-9 3300-9 2504-9 2524-9                                  

*Use API Standard Bushing for RSB Series Tables