cesco power tong dies free sample

Tong dies have come a long way since tongs became commonplace in the oilfields. Eckel has been at the forefront of this developing technology with the development of larger wrap-around type dies for many of its tong models. We offer coarse tooth design and fine tooth design depending on the application.

Wrap-Around Dies are considered the best choice for thinner wall tubulars where point loading is a concern. Wrap-Around Dies are symmetrically spaced from each other at all times insuring an equally distributed load on the tubular. Having a larger gripping surface area allows more teeth to come in contact with the tubular. Wrap-Around Dies come in any size to match tubing and casing tubulars and API coupling diameters. Wrap-Around dies are available with the following surface areas:

Coated True Grit® Dies: Used on chrome and fiberglass tubulars where reduced die penetration and die marking is greatly. For more information see the True Grit® Dies section.

Eckel offers contour type dies for tubing sizes on many of our tongs which use pivot heads. In addition to our contour dies, we provide A and S series wrap-around dies for our 13-3/8 and 20 Standard casing tongs, providing a larger gripping area and reducing pipe damage. Rig type dies are used extensively for 4-inches and above. Sliding heads with rig dies is the best choice when running drill pipe connections.

1 Slip Inserts, Tong Dies, and Jaws Index Page Slip & Bowl Inserts Page 3-1/2" TS 100 Slip /2" Ortco Slip /2" Ortco Slip Rotary Slip Inserts Baash Ross DU Varco SDS, SDML, SDXL Woolley type B: 4-1/2" & 5-1/2" Woolley type XL: 4-1/2 & Slip Type Elevator Inserts BJ LYT Slip Elevator BJ MYT Slip Elevator BJ YT Slip Elevator BJ HYT Slip Elevator BJ YC Slip Elevator Elevator/Spider Inserts BJ Elevator/Spiders Varco, Blohm + Voss Elevator/Spider Drill Collar Slip Inserts Baash Ross C & C Varco DCS-S, DCS-R, DCS-L Woolley Type A Casing Slip Inserts Baash Ross UC-3 & UC Varco CMS-XL Woolley Type C Tubing Spider Inserts BJ 50 & 100 Ton Cavins Model B Cavins Model C & Top Load Tubing Spider Inserts (Cont.) Page Cavins Model F Hydra Rig Model 150 & Guiberson T-40 & T Oil Country Type G Mission Shallow Well Slips Mission Deep Well Slips Manual Tong Dies Reducing Tong Dies Tong Die Drivers BJ Type Tong Dies Blohm + Voss Tong Dies BVM Tong Dies Web Wilson Tong Dies Woolley Manual Tong Dies Power Tongs - Jaws & Inserts BJ Jaws, Bushings & Inserts Foster & 58-93R Drag Ring Ass"y Foster & 58-93R Jaws & Inserts Cesco/Gill Tong Jaws & Inserts & Drag Ring Ass"y & Jaws & Inserts Back-up Tool Jaws & Inserts Back-up Tool Jaws & Inserts Misc. Inserts & Tong Dies Kelco K-20, K-25, K Hillman Kelley 500-C Jaw/Die Combination.. 24 Hillman Kelley Wrap Around Tongs Eckel Power Tong Dies Sucker Rod Elevator Plates Kelly Spinner Model 77 Jaws sales@rigtool.com (877) fax (817)

17 Reducing Tong Die - Reference Chart* 1-1/4" Die Slot Cat. # Ref. # Size Description Wt N/A 9/16" x 1-1/4" x 3-7/8" 1/8 Reduction Tong Die N/A 9/16" x 1-1/4" x 5" 1/8 Reduction Tong Die N/A 9/16" x 1-1/4" x 5-7/8" 1/8 Reduction Tong Die N/A 5/8" x 1-1/4" x 3-7/8" 1/4 Reduction Tong Die N/A 5/8" x 1-1/4" x 5" 1/4 Reduction Tong Die N/A 5/8" x 1-1/4" x 5-7/8" 1/4 Reduction Tong Die N/A 11/16 x 1-1/4 x 3-7/8 3/8 Reduction Tong Die N/A 11/16 x 1-1/4 x 5 3/8 Reduction Tong Die N/A 11/16 x 1-1/4 x 5-7/8 3/8 Reduction Tong Die N/A 3/4" x 1-1/4" x 3-7/8" 1/2 Reduction Tong Die N/A 3/4" x 1-1/4" x 5" 1/2 Reduction Tong Die N/A 3/4" x 1-1/4" x 5-7/8" 1/2 Reduction Tong Die N/A 13/16 x 1-1/4 x 3-7/8 5/8 Reduction Tong Die N/A 13/16 x 1-1/4 5 5/8 Reduction Tong Die N/A 13/16 x 1-1/4 x 5-7/8 5/8 Reduction Tong Die N/A 7/8 x 1-1/4 x 3-7/8 3/4 Reduction Tong Die N/A 7/8 x 1-1/4 x 5 3/4 Reduction Tong Die N/A 7/8 1-1/4 x 5-7/8 3/4 Reduction Tong Die N/A 15/16 x 1-1/4 x 3-7/8 7/8 Reduction Tong Die N/A 15/16 x 1-1/4 5 7/8 Reduction Tong Die N/A 15/16 x 1-1/4 5-7/8 7/8 Reduction Tong Die N/A 1" x 1-1/4" x 3-7/8" 1 Reduction Tong Die N/A 1" x 1-1/4" x 5" 1 Reduction Tong Die N/A 1" x 1-1/4" x 5-7/8" 1 Reduction Tong Die 1.15 * Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Tong Die Drivers Cat. # Ref. # Description Wt. Ea. Qty. Req. Box Tong Die Drivers N/A Tong Die Driver, A/R N/A Tong Die Driver, 1-1/ A/R Cat sales@rigtool.com (877) fax (817) Page 15

18 Tong Die Cross - Reference Chart* 5/8" Die Slot Cat. # Ref. # Size Application Wt /8" x 5/8" x 1-15/16" BJ Type S & WS Tongs Eckel 4-1/2" Tong 2-1/16" Jaw /8" x 5/8" x 4-1/2" Hillman Kelley Standard: All Sizes Drill Pipe & Casing Power Tongs S /8" x 1" x 1-7/16" (w/slot) BJ Powermatic & Hydratorc Tong w/ 1" Die Slots (4-1/8" x 4-1/2") S 6209S 3/8" x 1" x 1-15/16" (w/slot) BJ Type MS & MS Backup /8" x 1" x 2-1/2" Eckel 4-1/2" Tong, 4" & 4-1/2" Jaw.25 1" Die Slot 3/8" x 1" x 2-5/8" S BJ CTS 4-1/2", 5" & 5-1/2" Tongs.15 (w/slot) /8" x 1" x 3-7/8" BJ Powermatic Tong, Farr Power Tong, Weatherford 5-1/2" & 7-5/8" Tong /8" x 1" x 4-1/4" Web Wilson Type C, D, /8" x 1" x 4-1/2" Hillman Kelley Backup Die /8" x 1" x 5-3/4" Web Wilson Type B & Old Style AAX BJ B+V BV BD* /2" x 1-1/4" x 3-7/8" BJ Drill Pipe Power Tongs Eckel 5-1/2" to 30" Power Tongs Farr Power Tongs /4" Die Slot BD* /2" x 1-1/4" x 5" BJ Type SDD, C, F, & LF Tong BJ Power Casing Tongs (4-1/2" to 13-3/8") Woolley Type Super C, SLF & SDD Tong Eckel Model 850 Web Wilson B+V BV-25, BV-35, BV BD* /2" x 1-1/4" x 5-7/8" BJ Type B & DB Tongs Web Wilson AAX, H & AAX-ST-160 Woolley Types Super A Super B Rotary & Super B Casing Tongs B+V, BV-55, BV-57, BV-65, BV * Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. *Blue Diamond Tong Dies Available for 1-1/4 Die Slots Page 16 sales@rigtool.com (877) fax (817) Cat. 2012

19 BJ 4-1/2 R, RS, Tubing Tongs Replacement - Jaws, Bushings, and Tong Dies* Cat.# Ref. # Description Wt. Ea. Qty. Req. Box Replacement Jaws Jaw Assembly, 2-3/8" A/R Jaw Assembly, 2-7/8" A/R Jaw Assembly, 3-1/2" A/R Jaw Assembly, 4-1/2" A/R Replacement Bushings Bushing Assembly, 2-3/8" A/R Bushing Assembly, 2-7/8" A/R Bushing Assembly, 3-1/2" A/R Bushing Assembly, 4-1/2" A/R Replacement Tong Dies N/A Power Tong Die, 2-3/8" x 1" (1.315 ) N/A Power Tong Die, 2-3/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-3/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-3/8" x 2-1/16" Power Tong Die, 2-3/8" x 2-3/8" N/A Power Tong Die, 2-7/8" x 1 (1.315 ) N/A Power Tong Die, 2-7/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-7/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-7/8" x 2-1/16" N/A Power Tong Die, 2-7/8" x 2-3/8" Power Tong Die, 2-7/8" x 2-7/8" Tong Die, 3/8" x 1" x 3-7/8" (3-1/2" Jaw & Bushing) S Tong Die, 3/8" x 1" x 1-7/16" w/slot (4-1/2" Jaw & Bushing) * Interchangeable with: BJ, Carter Tool, Oil Country, 4-1/2 Open Face Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 17

20 BJ - 5-1/2 CTS Tubing Tongs Replacement - Jaws, Bushings, and Tong Dies* Cat.# Ref. # Description Wt. Ea. Qty. Req. Box Replacement Jaws Jaw Assembly, 2-3/8" A/R Jaw Assembly, 2-7/8" A/R Jaw Assembly, 3-1/2" A/R Jaw Assembly, 4-1/2" A/R Jaw Assembly, 5-1/ A/R Replacement Bushings Bushing Assembly, 2-3/8" A/R Bushing Assembly, 2-7/8" A/R Bushing Assembly, 3-1/2" A/R Bushing Assembly, 4-1/2" A/R Bushing Assembly, 5-1/ A/R Replacement Tong Dies N/A Power Tong Die, 2-3/8" x 1" (1.315 ) N/A Power Tong Die, 2-3/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-3/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-3/8" x 2-1/16" Power Tong Die, 2-3/8" x 2-3/8" N/A Power Tong Die, 2-7/8" x 1 (1.315 ) N/A Power Tong Die, 2-7/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-7/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-7/8" x 2-1/16" N/A Power Tong Die, 2-7/8" x 2-3/8" Power Tong Die, 2-7/8" x 2-7/8" Tong Die, 3/8" x 1" x 3-7/8" (4-1/2" & 5-1/2 Bushing Only) S Tong Die, 3/8" x 1" x 2-5/8 w/slot (4-1/2" & 5-1/2 Jaw Only) * Interchangeable with: BJ, Carter Tool, Oil Country, 5-1/2 Open Face Tubing Tongs Page 18 sales@rigtool.com (877) fax (817) Cat. 2012

21 58-93R Foster Tubing Tongs Drag Ring Assemblies Cat. # Ref. # Description Wt. Ea. Qty. Req. Box 1-5/16" to 3-1/2" (5" Bore) Drag Ring Assembly (5" Bore, 1" Pin) A/R Drag Ring Pin (1" x 6-1/4") A/R Drag Plug, 1" Long A/R Drag Spring, 7/8" Long A/R Set Screw, 1" x 1" A/R Cover Plate (5" Bore) A/R Guide Bell 1-5/16" to 1-1/2" (1.900") A/R 3-1/2" to 6-1/16" (6-1/4" Bore) Drag Ring Assembly (6-1/4" Bore, 1" Pins) A/R Drag Ring Pin (1" x 6-1/4") A/R Drag Plug, 7/8" Long (Overall = 3/4 ) N/A 5 A/R Drag Spring, 7/8" Long A/R Set Screw, 1/2" x 1" N/A 5 A/R Cover Plate (6-1/4" Bore) N/A 1 A/R Guide Bell (6-1/4" Bore) N/A 1 A/R 4" to 5-1/2" (7-1/4" Bore) Drag Ring Assembly (7-1/4 Bore, 3/4" Pin) A/R Drag Ring Pin (3/4" x 6-1/4") N/A 5 A/R Drag Plug, 5/8" Long A/R Drag Spring, 1/2" Long A/R Set Screw, 1/2" x 1" A/R Cover Plate (7-1/4" Bore) N/A 1 A/R Guide Bell (7-1/4" Bore) N/A 1 A/R 6-5/8" to 7" (7-7/8" Bore) Drag Ring Assembly (7-7/8" Bore: 5/8" Pin) A/R Drag Ring Pin (5/8 x 6 ) A/R Drag Plug, 1/2" Long A/R Drag Spring A/R Set Screw, 1/2" x 1" N/A 5 A/R Cover Plate, 5/8" Pins: 10 (7-7/8" Bore) N/A 1 A/R Guide Bell (7-7/8" Bore) N/A 1 A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 19

22 58-93R Foster Tubing Tongs Single Action Tubing Jaws & Tong Dies* 1-5/16" to 1-1/2" (1.900") Jaw Assembly Jaw, 1-5/16" to 1-1/2" (1.900") A/R Tong Die, 1", 1-1/4" & 1-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 1-7/8" to 2-3/8" Jaw Assembly Jaw, 1-7/8" to 2-3/8" A/R Tong Die, 2-1/16" Insert Screw, 3/8" x 2-3/4" w/nut A/R 2-3/8" to 2-7/8" Jaw Assembly Jaw, 2-3/8" to 2-7/8" A/R Tong Die, 2-3/8" to 3-1/2" P P Pyramid Tong Die, 2-3/8" to 3-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 2-7/8" to 3-1/2" Jaw Assembly Jaw, 2-7/8" to 3-1/2" A/R Tong Die, 2-3/8" to 3-1/2" P P Pyramid Tong Die 2-3/8" to 3-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 3-1/2" to 4-3/4" Jaw Assembly Jaw, 3-1/2" to 4-3/4" A/R Insert, 3-1/2" to 4-1/2" Insert, 4" to 4-3/4" Insert Screw, 3/8" x 2-3/4" w/nut A/R 5" to 6-1/16" Jaw Assembly Jaw (Solid) A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs 58-93R Foster Tubing Tongs Single Action Casing Jaws & Tong Dies* 4" to 4-1/2" Jaw Assembly Jaw, 4" to 4-1/2" A/R Insert, 4" to 4-1/2" N/A Insert, 5-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 6-5/8" to 7" Jaw Assembly Jaw (Solid), 6-5/8" N/A Jaw (Solid), 7" * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Page 20 sales@rigtool.com (877) fax (817) Cat. 2012

23 58-93R Foster Tongs Double Action Tubing Jaws & Tong Dies* 1" to 1-5/16" Jaw Assembly Jaw, 1" to 1-5/16" N/A Insert, 1" to 1-1/16" N/A Insert Screw, 3/8" x 2-3/4" w/nut A/R 2" Jaw Assembly Jaw, 2" Insert, 2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 2-3/8" to 3-11/16" Jaw Assembly Jaw to Double Acting, 2-3/8" to 3-11/16" Insert-Double Acting, 2-3/8" to 3-1/16" Insert-Double Acting, 2-7/8" to 3-1/2" Insert-Double Acting, 3-1/2" Insert-Double Acting, 3-11/16" Insert Screw, 3/8" x 2-3/4" w/nut A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs 58-93R Foster Tongs - Cesco/Gill Style Single Action Tubing Jaws & Tong Dies* 1-1" to 2-7/8" Jaw Assembly Use Foster Type Tong Jaws 2-7/8" to 3-1/2" Jaw Assembly J505-2 Jaw, 2-7/8" to 5" (w/1" pin Hole) A/R N505-4 Insert, 2-7/8" to 3-1/2" A/R N507 Insert Screw, 3/8" x 2-3/4" w/nut A/R 3-1/2" to 4-1/2" Jaw Assembly J505-2 Jaw, 2-7/8" to 5" (w/1" pin Hole) A/R N505 Insert, 3-1/2" to 4-1/2" A/R N507 Insert Screw, 3/8" x 2-3/4" w/nut A/R 4" to 5" Jaw Assembly J505-2 Jaw, 2-7/8" to 5" (w/1" pin Hole) A/R N505-1 Insert, 4" to 5" A/R N507 Insert Screw, 3/8" x 2-3/4" w/nut A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 21

24 58-93R Foster Tongs - Cesco/Gill Style Single Action Casing Jaws & Tong Dies* 4" to 5-1/2" Jaw Assembly J506 Jaw (4" to 5-1/2") w/ 3/4" pin hole A/R N505-2 Insert Casing, 4" to 4-1/2" A/R N505-3 Insert Casing, 5" to 5-1/2" A/R N507-1 Insert Screws, 5/16" w/nuts A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Foster 74 & Drag Ring Assembies* 1" to 3-1/2" Tubing Drag Ring Assembly (5" Bore, 1" Pin) A/R Drag Ring Pin, 5/8 x A/R Drag Spring, 1/2" Long A/R Drag Plug, 1/2" Long A/R Set Screw, 1/2" x 1" A/R Cover Plate (5" bore) A/R Guide Bell (4-3/4 Bore) A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Foster 74 & Tubing Tong Single Action Jaws & Tong Dies* 1" to 1-5/16" Jaw Assembly Jaw (Solid), 1" to 1-5/16" A/R 1-5/8" to 2-1/16" Jaw Assembly Jaw, 1-5/8" to 2-1/16" Tong Dies, 2-3/8" to 2-7/8" Insert Screw A/R 2-3/8" to 2-7/8" Jaw Assembly Jaw, 2-3/8" to 2-7/8" Tong Dies, 2-3/8" to 2-7/8" Insert Screw A/R 3-1/2" (only) Jaw Assembly Jaw (Solid), 3-1/2" A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Page 22 sales@rigtool.com (877) fax (817) Cat. 2012

25 Foster 147 Back-up - Jaws & Tong Dies* 1-5/16" to 2-1/16" Back-up Jaw Assembly Back-Up Jaw, 1-5/16" to 2-1/16" Tong Die, 1" to 1-1/2" Insert Screw, 3/8" x 1" A/R 2-3/8" to 3-3/4" Back-up Jaw Assembly Back-Up Jaw, 2-3/8 to 3-3/ Tong Die, 2-3/8" to 2-7/8" P P Pyramid Tong Die, 2-3/8" to 2-7/8" Insert Screw, 3/8" x 1" A/R 3-1/16" to 4-1/2" Back-up Jaw Assembly Back-up Jaw, 3-1/16" to 4-1/2" Tong Die, 2-3/8" to 2-7/8" P P Pyramid Tong Die, 2-3/8" to 2-7/8" Insert Screw, 3/8" x 1" A/R 4-1/2" to 5-9/16" Back-up Jaw Assembly Back-up Jaw (Solid), 4-1/2" to 5-9/16" A/R 5" to 6-1/16" Back-up Jaw Assembly Back-up Jaw (Solid), 5" to 6-1/16" A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 23

26 Kelco K-20, K-25, K-30, Replacement Inserts Replacement Inserts for Kelco K Insert f/k-20, 3/4" (1.050") Insert f/k-20, 1" (1.315") Insert f/k-20, 1-1/4" (1.660") Insert f/k-20, 1-1/2" (1.900") Insert f/k-20, 2-1/16" (2.062") Insert f/k-20, 2-3/8" Replacement Inserts for Kelco K Insert f/k-25, 1" (1.315") Insert f/k-25, 1-1/4" (1.660") Insert f/k-25, 1-1/2" (1.900") Insert f/k-25, 2-1/16" Insert f/k-25, 2-3/8" Insert f/ K-25, 2-7/8" Replacement Inserts for Kelco K N/A Insert f/k-30, 3/4" (1.050") N/A Insert f/k-30, 1" (1.315") N/A Insert f/k-30, 1-1/4" (1.660") N/A Insert f/k-30, 1-1/2" (1.990") Insert f/k-30, 2-1/16" Insert f/k-30, 2-3/8" Insert f/k-30, 2-7/8" Insert f/k-30, 3-1/2" Hillman Kelley Power Tongs Replacement Inserts Replacement Inserts for Hillman Kelley 500-C Power Tongs A Jaw/Die Combination F/Hillman Kelley, 3/4" to 1" A Jaw/Die Combination F/Hillman Kelley, 1-1/4" A Jaw/Die Combination F/Hillman Kelley, 1-1/2" to 2-1/16" A Jaw/Die Combination F/Hillman Kelley, 2-3/8" A Jaw/Die Combination F/Hillman Kelley, 2-7/8" Jaw/Die Combination F/Hillman Kelley, 3-1/2" Replacement Inserts for Hillman Kelley Wrap Around Power Tongs R N/A HKWA Insert, 3-1/2" Reg Tooth R N/A HKWA Insert, 2-7/8" Reg Tooth R N/A HKWA Insert, 2-3/8" Reg Tooth R N/A HKWA Insert, 2-1/16" Reg Tooth Standard Hillman Kelley Die, 3/8" x 5/8 x 4-1/2" 0.3 A/R A/R N/A Backup Die, 3/8" x 5/8" x 1-15/16" 0.2 A/R A/R Page 24 sales@rigtool.com (877) fax (817) Cat. 2012

The present invention relates to pipe tongs or power tongs used in the oil and gas industry to make-up and break-out sections of drill pipe and other tubular members having threaded connections. More particularly, the present invention relates to tong jaws comprising one or more dies which are rotatable. I. BACKGROUND OF THE INVENTION

Power tongs are often employed in the oil and gas industry to break-out or make-up threaded connections on tubular members (such as drill pipe, tubing, and casing). It is generally required that one tong grip and rotate one section of a tubular string and a second tong grip and hold stationary the other section of the tubular string. The tong which rotates the section of the tubular member is typically referred to as the power tong, while the tong which holds the other section of the tubular member stationary is typically referred to as the back-up tong. Examples of conventional power tongs can be seen in references such as U.S. Pat. Nos. 5,671,961, 5,702,139, and 5,819,604 to Buck, each of which is incorporated herein by reference in its entirety.

Power tongs typically have two or more jaws which are actuated to grip and release the tubular member. There are generally two types of jaws—pivoting jaws and sliding jaws. Both pivoting jaw and sliding jaw power tongs are well known in the art. An example of a pivoting jaw power tong can be seen in U.S. Pat. No. 4,350,062 to Farr et al., which is incorporated by reference herein. FIG. 1 illustrates the basic components of a typical pivoting jaw power tong 1. A tong body 2 encloses a ring gear 3 which has a cam surface 4. Positioned within ring gear 3 are the pivoting jaws 5. Pivoting jaws 5 are pivotally attached between an upper and lower tong cage plate (not shown) by pivot pin 7. A roller 6 on pivoting jaws 5 engages cam surface 4 on ring gear 3. As is well known in the art, the rotation of ring gear 3 causes different sections of cam surface 4 to either push roller 6 toward tubular member 100 (causing the jaws to grip the tubular member) or allow roller 6 to move away from tubular member 100 (causing the jaws to release the tubular member).

An example of a sliding jaw power tong may be seen in U.S. Pat. No. 5,435,213 to Buck, which is incorporated by reference herein in its entirety. A sliding jaw power tong has a tong body and ring gear structure similar to a pivoting jaw power tong, but the jaw is not pinned to the cage plates. The sliding jaw is moved radially toward the tubular by way of the ring gear"s cam surfaces acting on the sliding jaws" rollers. Sliding jaws could also include radially moving jaw arrangements such as seen in U.S. patent application Ser. No. 10/421,041, filed on Apr. 23, 2003 to Bangert, entitled Improved Tong Piston and Cylinder Assembly, which is incorporated herein in its entirety.

Actual contact with the tubular member is typically accomplished through the use of die inserts which are removably positioned in the power tong jaws. Typical die inserts have gripping surfaces which contain a number of ridges or teeth, or have alternative gripping surfaces such as those disclosed in U.S. Pat. No. 6,378,399 to Bangert, which is incorporated by reference herein in its entirety. When the jaws close upon the tubular member, the teeth firmly “bite” into the tubular member and prevent slippage when torque is applied. In most conventional tong jaw systems, the jaws are designed to grip a tubular member of a particular nominal diameter (or a limited range of nominal diameters) and the dies are in a fixed orientation relative to the jaw body. The dies are positioned on the jaw at an angle to maximize the contact between the face of the die and the surface of the tubular member. Because the diameters of tubular members are allowed to vary within certain tolerances, the exact diameter of the tubular member being gripped can vary, especially when dealing with large diameter tubular members. Particularly in the case of prior art pivoting jaw systems, differing diameters may prevent all of the dies from squarely engaging the surface of the tubular member and in extreme cases may completely prevent one or more of the dies from contacting the surface of the tubular member. II. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 3 cis a perspective view of a multiple piece sliding tong jaw comprising a rotatable die assembly comprising a die with an integrally formed rocker bar.

The following description of embodiments of the present invention refers to the accompanying figures. The term “power tong” as used herein refers to both power tongs for rotating tubular members and back-up power tongs for holding tubular members stationary against rotation.

In one embodiment, the invention comprises the pivoting power tong jaw 101 shown in FIG. 2. The jaw 101 comprises an upper plate 102, a lower plate 103, and three column members 104. Upper plate 102 and lower plate 103 are arranged horizontally, the former above the latter. Upper plate 102 and lower plate 103 each contain two column member slots 105 and one column member opening 106. In one aspect, upper 102 and lower 103 plates will be formed by a high speed, precision cutting process. Examples of high speed precision cutting processes would include laser cutting or water jet cutting, shear or punch press types of heavy metal fabrication techniques, and may include plasma torch cutting. Plasma torch cutting and flame torch cutting would generally not be considered precision cutting processes, and conventional milling would not be considered high speed, although these methods could be used in less preferred embodiments for producing the plates, as could casting processes. As illustrated in FIG. 2, each column member 104 is positioned vertically. Two column members 104 ahave die retaining grooves 107 formed in them for receiving and retaining dies 108. (An enlarged view of a column member 104 ais depicted in FIG. 6 c, which clearly shows die retaining groove 107.) Column members 104 ahaving die retaining grooves 107 are positioned between upper plate 102 and lower plate 103 such that each end of each of column members 104 afits into a corresponding column member slot 105. Column members 104 are welded into place, or secured by another common method (e.g., using bolts or screws). The third column member 104 bis also positioned between upper plate 102 and the lower plate 103. This column member 104 bdoes not have a die retaining groove 107 and has points 109 at each end which extend through column member openings 106 in upper plate 102 and lower plate 103, thereby stabilizing column member 104 b. This embodiment further comprises a roller 110 which, as noted above, engages the cam surface of the power tong"s ring gear as suggested by FIG. 1. Roller 110 is held in place with roller pin 111.

In another embodiment, shown in FIG. 5, the invention comprises a die assembly 124 comprising two dies 126 aand 126 b. This embodiment is used in large jaw systems where a single die does not provide a sufficiently long gripping surface. Die assembly 124 is prevented from sliding up and out of die retaining groove 107 by die face pins 127 which fit into face holes 125 in the top portion of die retaining groove 107 above die assembly 124. It will be understood that die face pins 127 could be substituted for die top pin 120 in the embodiment shown in FIG. 2 to prevent die 108 from sliding up and out of die retaining groove 107.

In other embodiments, the invention may be adapted for sliding power tong jaws such as those shown in FIG. 3. FIG. 3 ashows a solid sliding tong jaw 300, and FIGS. 3 band 3 cshow sliding tong jaws 301 and 315 formed from multiple pieces. Examples of jaws formed from multiple pieces can be seen in the U.S. patent application entitled “Tong Jaw and Method for Constructing the Tong Jaw,” Ser. No. 10/638,783 which is incorporated herein by reference in its entirety. Similar to the pivoting jaws described above, jaws 301 and 315 each comprise an upper plate 304, a lower plate 305, and two column members 302. Upper plate 304 and lower plate 305 are arranged horizontally, the former above the latter. The upper plate 304 and lower plate 305 contain column member slots 306 which allow column members 302 to connect upper plate 304 and lower plate 305. As illustrated in FIG. 3 b, column members 302 are positioned such that die inserts 307 face inwardly in an arcuate orientation corresponding approximately to the diameter of the tubular member to be gripped, thereby allowing both of the die inserts 307 to come into contact with the surface of the tubular member when the power tong jaw member 301 is in use. In the embodiment shown in FIG. 3 b, jaw 301 comprises a rocking bar 310 and rocking bar recess 311, which function as described above to allow die 307 to rock or rotate about the vertical axis defined by rocking bar 310. The embodiment shown in FIG. 3 ccomprises a die 307 which comprises an integral rocking bar 312 as described above.

16. The power tong of claim 15, wherein said die is positioned such that an end of said back of said die is capable of engaging said back of said die retaining groove, while the opposite end of said back of said die engages said front of said die retaining groove.