Focus rotary drilling products

Transcription

1 Atlas Copco Secoroc Focus rotary drilling products Product catalog

2 Atlas Copco Secoroc presents the Focus product line

3 The Atlas Copco Secoroc Focus product line includes bits designed to deliver competitive performance on current generation drill rigs. These bits are suited for a wide variety of drilling applications including Blasthole, Waterwell, HDD, Workover and Exploration drilling. The products are proven in varied formations including Very Hard Iron Ore, Hard to Medium formations of Gold/Copper mines and Soft overburden of Coal mines. The product line offers a broad range of sizes and designs for a professional driller to choose from for any application. Focus rotary drill bits are available as Milled bits or as Tungsten Carbide Insert (TCI) bits. Milled bits are ideal for very soft to medium hard rock. The teeth are hardfaced with Tungsten Carbide for good wear resistance. TCI drill bits are available in various cutting structure designs, ranging from aggressive long conical inserts for soft Sandstones/Shales to moderately blunt Conical inserts for compact Sandstones/Granordiorite/Basalts to Ogive shaped carbide inserts for very hard banded Iron Ore formations. Focus rotary drill bits come in open bearing and sealed bearing configurations depending upon whether the application is Air circulation drilling or Mud circulation drilling. Additional features include: Hardfacing on cone to overcome cone shell erosion. Shirttail protection options to handle different abrasive formations. Regular protection for soft overburdens. protection for wet and abrasive formations like sandstone. Enhanced protection for dense and fractured formations like iron ore.

4 Tricone bit elements Air Water Separator or Back Flow Valve Lock Ring Pin Connection Pin Shoulder Air Tube Nozzle Nail Lock Nozzle Lug Air Passage to Bearing Shirttail Inserts Gauge Bevel Inserts Ball Retaining Pin Ball Retaining Pin Weld Shirttail Hardfacing Gauge Inserts Air Exit Slot Outer Roller Bearing Ball Bearing Cutter Cone Nose Inserts Cone (L) and Journal (R) Thrust Buttons Inner Roller Bearing 4

5 Key applications Blasthole Mining Focus TCI bits have optimally designed bearing structures to penetration rates in a wide cross section of formations. withstand extreme pulldown loads typical of today s mining drill rigs. Controlled metallurgy and generous air passages for cooling ensure extended bearing hours. The robust bearing is matched with an aggressive cutting structure providing good For overall wear protection, hardfacing is provided on shirttails and cones. Easily replaceable nozzles, with nail lock retention, enable drillers to select appropriate nozzle sizes ensuring correct back pressure. Consistent manufacturing processes from raw material to final bit assembly ensures performance reliability bit after bit. Waterwell Drilling for water is a demanding activity on the driller, as well as the drill bit. No two waterwell bits are similar due to the variety of ground conditions. The key to a peaceful night, for a driller, is a consistent and reliable tool. Focus waterwell bits provide this. Thanks to the same manufacturing procedures adopted for water well products, as for high performance mining products, Focus bits have delivered to the driller s content. Bits are available in Milled and TCI versions from 2½" in diameter up to 5¾" in center flush and jet flush configurations. Larger diameter bits up to 12¼" are also available in the Focus range of Atlas Copco rotary drill bits. 5

6 Product features Fast penetration The cutting structures are designed to perform efficiently and increase the bit life with a variety of insert shapes. Carbide Multiple grade selection for different rows of inserts based on function. Optimized nozzle orientation Nozzle size and orientation are optimized for efficient evacuation of cuttings. Velocity Front view [m s^-1] 1. Bottom view

7 Cone nose protection Small spherical inserts and hard metal welding on the nose portion for durability and wear resistance in abrasive formations. Regular shirttail protection Regular shirttail protection for normal drilling. shirttail protection shirttail protection for abrasive drilling. Enhanced shirttail protection Deeply set spherical inserts on shirttail for effective grip during long runs in abrasive formation. Hard metal welding for superior wear resistance. 7

8 Cutting structures - TCI Four basic classifications for Tungsten Carbide Insert (TCI) drill bits are divided into the F4, F5, F, and F7 type series. The principal design differences are in tailoring the cutting structure of each type to most efficiently drill specific formations. The F4 series bits are characterized by large diameter, widely spaced chisel or conical inserts. This configuration promotes maximum penetration rates in softer formations that have a tendency to stick and ball up the cutting structure. Inserts become shorter and more closely spaced as you go through the F5 and F series. The F7 series has the most densely spaced and shortest projecting inserts. This configuration promotes maximum penetration rates in hard formations. F4 Types IADC: 4-1 to 4-4 Rock Strength/UCS: Very soft-soft, <10,000 psi / <83 mpa Drilling RPM: 50 to 150 RPM Weight on Bit: 1,000 to 4,000 (lbs/inch of bit diameter) Super scoops, long conical inserts with sharp points are widely spaced for aggressive drilling and very high ROP at <100 m/hr typically used for coal overburden in formations like sandstone, siltstone, shale, limestone, alluvium, highly altered volcanics and schists. F5 Types IADC: 5-1 to 5-4 Rock Strength/UCS: Soft-medium hard rock,,000-10,000 psi / mpa Drilling RPM: 50 to 150 RPM Weight on Bit: 3,000 to,000 (lbs/inch of bit diameter) Chisel, conical inserts with blunt points and medium projection are moderately spaced for aggressive drilling and good penetration. Typically used for hard coal overburden in formations like volcanic rocks (rhyolite, dacite, andesite, etc.), Copper porphry, granite, diabase and low grade metamorphic rocks. 8

9 F Types IADC: -1 to -4 Rock Strength/UCS: Medium hard rock, 24,000-44,000 psi / mpa Drilling RPM: Weight on Bit: 4,000 to 7,000 (lbs/inch of bit diameter) Conical, ogive, some chisel inserts with blunter points and shorter projections are closely spaced on increased number of rows per cone. Typically used in formations like volcanic rocks (rhyolite, dacite, andesite, etc.), hard limestone, hard shale, quartzite, granodiorite, granite, diabase, diorite, skarn, tactite and medium grade metamorphic. F7 Types IADC: 7-1 to 7-4 Rock Strength/UCS: Hard rock, 38,000-0,000 psi / mpa Drilling RPM: 50 to 80 RPM Weight on Bit: 5,000 to 9,000 (lbs/inch of bit diameter) Strong conical, ogive inserts with short projections are densely packed. Typically used in formations like taconite, quartzite, banded iron formations and high grade metamorphic rocks like skarns, tacite, hornfels, etc. 9

10 Cutting structures - Steel tooth The three basic classifications of steel tooth bits are divided into the F1, F2 and F3 Series. Type F1 steel tooth bits are designed for optimum performance in formations of low compressive strength. Soft formation bits are designed with long slim, strong teeth to permit deep penetration in the formation with comparatively light weight on bit. Type F2 steel tooth bits are designed for medium formations and have more closely spaced teeth with more gage surface to resist wear. Type F3 steel tooth bits are designed to drill hard formations. This bit has higher capacity bearings and more closely spaced teeth with increased tooth angles to allow the use of heavier weights required to effectively drill hard formations. F1 Types IADC: 1-1 to 1-4 Rock Strength/UCS: Less than 5,000 psi / <35 mpa Weight on Bit: 1,000 to 4,000 (lbs/inch of bit diameter) Large widely space teeth with interruptions, removals and deletions on gage. Full tooth hardfacing in both sealed and open bearing configurations. Primary application is Waterwell drilling. F2 Types IADC: 2-1 to 2-4 Rock Strength/UCS: 3,000-10,000 psi / mpa Weight on Bit: 3,000 to,000 (lbs/inch of bit diameter) More teeth and rows than F1 class bits. Teeth are smaller and shorter, with larger included angle for strength. Similar hardfacing to F1 class bits, except no hardfacing on lead side of teeth. Available in sealed and open bearing configuration. Primary application is Waterwell drilling. 10

11 F3 Types IADC: 3-1 to 3-4 Rock Strength/UCS: 8,000-14,000 psi / mpa Weight on Bit: 4,000 to 7,000 (lbs/inch of bit diameter) Short, small closely spaced teeth for maximum bottom hole coverage. hardfacing only on gage and spear point. Maximum gage protection with optional carbide inserts. Available in sealed and open bearing configurations. Primary applications are Waterwell and Oil field Workover. Product lines Open bearing Mining TCI 4 3/4" to 15" MT 1/4" to 9 7/8" Waterwell Workover MT 3 1/4" to 1/4" TCI MT Fluid circulation Air circulation Fluid circulation Air circulation Center flush 2 1/2" to 3/4" Center flush to 3/4" Center flush 2 1/2" to 10" Center flush to 10" Jet flush 5 1/2" to 1/2" Jet flush 7 7/8" to 121/4" Jet flush 5 1/8" to 7 3/8" Sealed bearing Exploration HDD Waterwell TCI 5 1/8" to 5 1/2" MT 3 7/8" to 5 1/2" TCI 3 7/8" to 3/4" MT 3 7/8" to 3/4" TCI 7 7/8" to 12 1/4" MT 7 7/8" to 12 1/4" 11

12 Air requirements In rotary blasthole drilling, there is always a concern with delivery of air in sufficient volume and at the proper pressure to assure optimum bit performance when drilling with recommended bit weight and RPM. Sufficient air volume should be provided to produce an annular return velocity of 5,000-7,000 ft./min. for light, dry materials; and 7,000-9,000 ft./min. for materials that are wet and/or heavy, and when drilling at penetration rates of 35m per hour or higher. To determine volumetric requirements, the simple flow equation Q = AV may be used. Since friction losses in the annulus of relatively shallow holes of blasthole drilling are negligible, this becomes: V Q = (D 2 - d 2 ) The table on this page shows volumetric requirements in cubic feet of free air per minute necessary to provide both 5,000 and 7,000 ft. per min. annular velocity for various possible combinations of hole size and drill pipe size. The equation used is the simple flow equation: Q = AV. With all constants combined and area expressed as difference between hole and pipe areas, this equation becomes: Q = (D 2 - d 2 ). Q = cubic feet per minute free air necessary to obtain 5,000 feet per minute annular velocity d = drill pipe outside diameter, inches D = hole diameter, inches Should Q be desired for some annular return velocity V other than 5,000 feet per minute, the result obtained above or from the table should be multiplied by the factor: V/5000. Example: A 9 7/8" hole being drilled with 7 ¾" drill pipe at a desired annular velocity of 5,000 ft. per minute. Solution: Q = [(9 7/8) 2 - (7 ¾) 2 ] = [ ] = 1022 cu. ft. per min. (shown in table) Had 7,000 ft. per min. velocity been desired: Q = (1022) = 1431 cu. ft./min. The above equation may also be rewritten to solve for annular velocity V when available compressor capacity, hole size and pipe size are known. Air Volume requirements for various hole diameter and drill pipe combinations - for 5,000 ft. and 7,000 ft. per min. annular velocity. D hole diameter (in) 4 1/2 4 3/4 5 1/8 5 5/8 1/4 3/4 7 3/8 7 7/ / /4 13 3/ /2 d drill pipe O.D. (in) Q. - 5,000 CuFt/min free air Q. - 7,000 CuFt/min free air 2 7/ / / / / / / / / , / / , , / / , / , / / , / , /2 87 1,214 1/ / /2 15 2, / ,93 5/ , , / , / , / , /4 12 2, / , ,52 8 5/ , , , / , , / , , / , , , , , ,918 12

13 Air circulation Air is the life blood of a rotary blasthole tricone bit. Air cleans and cools the bearings, keeping contaminants out. Air pressure should be maintained at the manufacturers recommended level for best performance. Jet circulation bit with air bearing: Air pathway through the nozzles and lugs. Regular circulation bit with open bearing: Air pathway through the center of bit. 13

14 Using pressure drop tables Procedure for using pressure drop tables: 1. Establish maximum operating pressure and air volume delivered for the air compressor being used. Consideration should be given to altitude, volumetric efficiency, ambient temperature and mechanical condition of the compressor when establishing these values, if actual volume is not known. NOTE: An air test is the best way to determine actual delivery of air volume and pressure. 2. From the table, choose the air volume delivered column nearest the actual volume established under item Proceed down the proper air volume delivered column to the bit size range for the bit being used. 4. Read the air pressure required for forcing air through the bit. The pressure required depends on the size of the air blast nozzles. 5. Select the smallest nozzle diameter available within the given bit size range that can be used without exceeding the maximum operating pressure of the compressor. NOTE: psi should be reserved for a safety buffer and other pressure losses in the system depending on drill type and manufacturer. Example 1 a. Bit size: 7 7/8" b. Air volume delivered: 800 cfm c. Maximum operating pressure rig: 5 psi From the table, select 7/1" nozzle (49 psi), this allows 1 psi for safety buffer and system losses. Example 2 a. Bit size: 9" b. Air volume delivered: 1200 cfm c. Maximum operating pressure rig: 50 psi. From the table, select 11/1" nozzle (39 psi). Bit size range 5" to " 1/4" to 7 3/8" Pin size 7 7/8" to 9" 4 1/2" 9 7/8" to 11" 12 1/4" to 15" to 7 Air course size 3 each /1" /8" 1/2" /1" /1" /8" /1" /2" /1" /8" /1" /2" /1" 20 11/1" 3/4" 3/8" /1" /2" /1" 20 11/1" 3/4" 7/8" 1" 7/1" 19 1/2" 9/1" 11/1" 3/4" 7/8" 1" 1 1/8" 1 1/4" 14

15 Nozzle selection Air pressure drop across Atlas Copco Secoroc blasthole bits with various nozzle size. Air volume delivered - cubic feet per minute Actual air volumes delivered to the bit is a key factor in preventing early bearing failure and providing proper cleaning of the tool. Pressure drops listed above are approximate for use as guidelines only. Actual pressures will depend on bit condition, bearing type, and air piping conditions. Please contact your Atlas Copco Secoroc representative for assistance in determining the best nozzle size for individual bits and mine site condition. 15

16 Nozzles Nozzle size selection Nozzles should be selected so that the pressure inside the bit is psi. The cab operating pressure will be somewhat higher, depending on the type of drill and CFM of air circulated. Typically, on compressors rated at 5 psi, pressure inside the bit will be 8-15 psi lower than what the cab gauge shows. On drills with psi rated compressors, bit pressures can be psi lower than the cab gauge reading. The proper procedure for determining the correct nozzle size is as follows: 1. Remove the bit and perform an air test. Record all pressure readings. Be sure to use at least one orifice plate in the air test that will give psi at the tool. 2. Determine what the cab pressure is when the tool pressure is psi. 3. Re-install the bit with the original nozzles. Run the air compressor and record the cab air pressure. Nozzle removal 1. Use a screwdriver to pry up the head of the nail locking the nozzle into place. 2. When the nail head is pried up, grab the nail with pliers and pull the nail completely out of the bit. 3. Remove the nozzle. Nozzle installation 1. Put the nozzle into the nozzle boss, with the beveled edge to the inside, the flat end to the outside. 2. Place a nozzle nail into the nozzle hole. 3. With a hammer, pound this nozzle nail down until the nail head contacts the bit. 4. DO NOT flatten the head of the nozzle nail against the bit. 4. If you do not get the cab air pressure that you saw with psi tool air pressure during the air test, continue to install and check different sets of nozzles in the bit until you do get the cab pressure that corresponds to psi at the tool. 5. Once you get the same cab air pressure with nozzles that you got during the air test with psi tool pressure, you have found the correct size nozzles to use in the bit. The table on the previous page shows approximate bit air pressure that can be expected with the listed nozzles and CFM. This can be used as a starting point for determining correct nozzle size. 1

17 Bit selection guide Tricone carbide insert rock bit series vs. rock hardness Rock UCS (psi) Rock Strength UCS UCS (psi) (mpa) Lower Lower 8, ,000 9 Tungsten carbide insert Tricone bit series Bit Type F4 F5 F F7 IADC 4-1 to 4-4 IADC 5-1 to 5-4 Rock type Claystone, Mudstone Soft Shale & Sandstone Consolidates Sandstone 12, Medium Shale 14, Tuff, Soft Schist 1, Andesite, Rhyolite , , Quartzite (Sand, Silt) Limestone, Marble Monzonite, Granite Gneiss 24,000 2, Diorite, Diabase 28, Hard Shale, Slate 30, Limestone, IADC Dolomite 32,000 34, to -4 Basalt Tactite, Skarn 3, Granodiorite 38, Taconite 40, Quartzite 42, Syenite 44, Gabbro 4, , IADC Banded Iron 50, Taconite 52, to 7-4 Chert 54, , Quartzite 58, , Amphibolite Hornfels, Higher Higher Hematite Ore Rock UCS hardness (Unconfined Compressive Strength) is only one factor that contributes to the drillability" of any rock. Hardness and elasticity will also effect bit selection. Steel tooth Tricone rock bit type vs. rock hardness Rock UCS (psi) 0 2,000 4,000 Steel tooth Tricone bit series F1 F2 F3 IADC 1-1 to 1-4 Rock type Unconsolidated Sands Limestone, Siltstone Clay Stone, Mudstone Marl, Chalky Limestone,000 IADC 2-1 to Soft Shales Consolidated Sandstones 10,000 12,000 IADC 3-1 to 3-4 Soft Marble, Dolomite Medium Shales 14,000 Tuff, Soft Schist Rock UCS hardness (Unconfined Compressive Strength) is only one factor contributing to the drillability" of any rock. Other factors influencing drillability are fracture toughness, shear strength, Young s modulus of elasticity, Poisson s ratio of stress vs. strain & internal angle of friction. Any particular bit may be used in harder or softer rock than this chart indicates. 17

18 Catalog code key Type of product Thread Bit type Bit diameter/ mm s IADC Cutting Structure Tricone product line Major tooth shape, TCI or Steel Lug prote FB C Rock bit 1 2 3/8 10 Steel 0 2 7/ Focus Blasthole FB Conical Inserts C 2 7/8 12 TCI / Focus Waterwell FW Round Top Inserts if TCI R Backreaming 3 1/ / Focus Workover FO Ogive Inserts if TCI O Shirttail Protection 4 3/ / Focus Exploration FE Chisel Inserts if TCI F Enhanced Shirttail 5 1/ / Focus Petroleum FP Conventional Gage, Steel 1 5/ Focus Engineering FE Tapered Gage, Steel 2 7 5/ / Focus Hole Opener FH T" Gage, Steel 3 8 5/ / Focus HDD FD L" Gage, Steel 4 4n / Web" Gage, Steel 5 4 5/ / / / / / / / / / / / / / / / / / / / / / /

19 ction features Lug type features Other features Gage carbide feathers IADC Bearing type A H W 02 A Center Jet equipped K Hard Nose on Cones H Standard" Carbide has no code Standard Roller (Fluid) Bearing 01 B Streamlined Lug, Jet Only L Combination AWS-BFV J Gage Bevel on Bits G Air Bearing 02 in Steel bits ST Regular Circulation R Aggressive Cutting Structure V Tough Carbide (Breakage Resistant) T Roller Bearing Gage Protected (Non Air Bearing) 03 Y Wear Resistant Carbide (Hard) W Sealed Roller Bearing 04 Sealed Roller Bearing, Gage Protected 05 Sealed Journal Bearing 0 Sealed Journal Bearing, Gage protected 07 19

20 Blasthole Tricone Bits 4 3/4" - 7 7/8" Bit Diam. Product No. Product Code IADC Product Special Features Circ. Weight lbs kgs Pin Conn. 4 3/4" 121 mm FB-C F Conical Inserts Jet 20 9 Operating Suggestions WOB/RPM 21,400-35,00 lbs WOB 5 1/8" 130 mm FB-C F5 Conical Inserts Jet ,900-33,300 lbs WOB 5 7/8" 149 mm FB-F F Chisel Inserts Jet ,400-44,100 lbs WOB 1/4" 159 mm FB F23 Conventional Gage Jet /4" FB F33 Web Gage Jet mm 1/4" 159 mm FB-C F5 Conical Inserts Jet /4" 159 mm FB-F F Chisel Inserts Jet /4" 159 mm FB-F F5 Chisel Inserts Jet ,900-34,400 lbs WOB 28,100-4,900 lbs WOB 21,900-40,00 lbs WOB 28,100-4,900 lbs WOB 28,100-4,900 lbs WOB 3/4" 171 mm 3/4" 171 mm 3/4" 171 mm FB-C F4 Conical Inserts Jet FB-OA F5 Ogive Inserts, Jet FB-FA F Chisel Inserts, Jet Conical Inserts, 3/4" 171 mm FB-CYH F7 Enhanced Shirttail, Hard Nose on Cones 3/4" 171 mm FB-CA F7 Conical Inserts, Conical Inserts, 3/4" 171 mm FB-CAH F7, Hard Nose on Cones Jet Jet Jet ,100-37,100 lbs WOB 70 to 150 RPM 23,00-43,900 lbs WOB 30,400-50,00 lbs WOB 30,400-57,400 lbs WOB 30,400-57,400 lbs WOB 30,400-57,400 lbs WOB 7 3/8" 187 mm 7 3/8" 187 mm FB-C F5 Conical Inserts Jet FB-C F7 Conical Inserts Jet ,100-48,000 lbs WOB 33,100-2,700 lbs WOB 7 1/2" 191 mm FB-C F7 Conical Inserts Jet ,800-3,800 lbs WOB /8" 200 mm FB-CA F35 Conical Inserts, 7 7/8" 200 mm FB-CA F4 Conical Inserts, 7 7/8" 200 mm FB-CA F4 Conical Inserts, Jet /2" Jet /2" Jet /2" 11,800-43,300 lbs WOB 70 to 150 RPM 11,800-43,300 lbs WOB 70 to 150 RPM 11,800-43,300 lbs WOB 70 to 150 RPM

21 Blasthole Tricone Bits 7 7/8" - 9" Bit Diam. Product No. Product Code IADC Product Special Features Circ. 7 7/8" 200 mm FB-CA F5 Conical Inserts, 7 7/8" 200 mm FB- CAHW F5 Conical Inserts,, Hard Nose on Cones, Wear Resistant Carbide 7 7/8" 200 mm FB-CA F5 Conical Inserts, 7 7/8" 200 mm FB-CY F5 Conical Inserts, Enhanced Shirttail Conical Inserts, 7 7/8" 200 mm FB-CAH F5, Hard Nose on Cones 7 7/8" 200 mm FB-CA F55 Conical Inserts, 7 7/8" 200 mm FB-CYV F55 Conical Inserts, Enhanced Shirttail, Aggressive Cutting Structure Conical Inserts,, Wear Resistant 7 7/8" 200 mm FB-CAW F55 Carbide 7 7/8" 200 mm FB-CA F Conical Inserts, Enhanced Shirttail 7 7/8" 200 mm FB-CY F5 Conical Inserts, Enhanced Shirttail 7 7/8" 200 mm FB-CY F7 Conical Inserts, Enhanced Shirttail Weight Pin lbs kgs Conn. Jet /2" Jet /2" Jet /2" Jet /2" Jet /2" Jet /2" Jet /2" Jet /2" Jet /2" Jet /2" Jet /2" Operating Suggestions WOB/RPM 27,00-51,200 lbs WOB 27,00-51,200 lbs WOB 27,00-51,200 lbs WOB 27,500-51,200 lbs WOB 27,00-51,200 lbs WOB 27,00-51,200 lbs WOB 27,500-51,200 lbs WOB 27,00-51,200 lbs WOB 35,400-59,100 lbs WOB 35,400-59,100 lbs WOB 35,400-,900 lbs WOB 8 1/2" 21 mm FB-CA F35 Conical Inserts, 8 1/2" 21 mm FB-CA F5 Conical Inserts, 8 1/2" 21 mm FB-CA F Conical Inserts, 8 1/2" 21 mm FB-CA F7 Conical Inserts, Jet /2" Jet /2" Jet /2" Jet /2" 11,800-43,300 lbs WOB 70 to 150 RPM 27,00-51,200 lbs WOB 35,400-59,100 lbs WOB 35,400-,900 lbs WOB 9" 229 mm FB-CA F35 Conical Inserts, 9" 229 mm FB-CA F4 Conical Inserts, 9" 229 mm FB-CA F4 Conical Inserts, Jet /2" Jet /2" Jet /2" 9" 4 1/2" FB-C F5 Conical Inserts Jet mm 9" 229 mm FB-CA F5 Conical Inserts, Jet /2" 9" 229 mm FB-CA F5 Conical Inserts, Jet /2" 13,500-49,500 lbs WOB 70 to 150 RPM 13,500-49,500 lbs WOB 70 to 150 RPM 13,500-49,500 lbs WOB 70 to 150 RPM 31,500-58,500 lbs WOB 31,500-58,500 lbs WOB 31,500-58,500 lbs WOB 21

22 Blasthole Tricone Bits 9" - 9 7/8" Bit Diam. 9" 229 mm Product No. Product Code IADC Product Special Features Circ. Weight lbs kgs Pin Conn FB-C F5 Conical Inserts Jet /2" Conical Inserts,, Wear Resistant 9" 229 mm FB-CAW F5 Carbide 9" 229 mm FB-CA F55 Conical Inserts, 9" 229 mm FB-CY F Conical Inserts, Enhanced Shirttail 9" 229 mm FB-CYW F Conical Inserts,Enhanced Shirttail, Wear Resistant Carbide 9" 229 mm FB-CY F7 Conical Inserts, Enhanced Shirttail Jet /2" Jet /2" Jet /2" Jet /2" Jet /2" Operating Suggestions WOB/RPM 31,500-58,500 lbs WOB 31,500-58,500 lbs WOB 31,500-58,500 lbs WOB 40,500-7,500 lbs WOB 40,500-7,500 lbs WOB 40,500-7,500 lbs WOB 9 7/8" 251 mm FB F33 Web Gage Jet /8" 251 mm FB-CA F37 Conical Inserts, 9 7/8" 251 mm FB-CA F4 Conical Inserts, 9 7/8" 251 mm FB-CA F5 Conical Inserts, Jet Jet Jet /8" 251 mm FB-C F5 Conical Inserts Jet /8" 251 mm FB-CA F55 Conical Inserts, Jet /8" 251 mm FB-C F55 Conical Inserts Jet /8" 251 mm FB-CY F7 Conical Inserts, Enhanced Shirttail 9 7/8" 251 mm FB-CA F Conical Inserts, Jet Jet /8" 251 mm FB-C F Conical Inserts Jet Conical Inserts, 9 7/8" 251 mm FB-CAH F, Hard Nose on Cones Jet ,400-74,100 lbs WOB 14,800-54,300 lbs WOB 70 to 150 RPM 14,800-54,300 lbs WOB 70 to 150 RPM 34,00-4,200 lbs WOB 34,500-4,200 lbs WOB 34,00-4,200 lbs WOB 34,500-4,200 lbs WOB 44,400-74,100 lbs WOB 44,400-74,100 lbs WOB 44,400-74,100 lbs WOB 44,400-74,100 lbs WOB 22

23 Blasthole Tricone Bits 9 7/8" - 10 Bit Diam. Product No. Product Code IADC Product Special Features Circ. Weight lbs kgs Pin Conn. 9 7/8" 251 mm FB-C F5 Conical Inserts Jet /8" 251 mm FB-CA F5 Conical Inserts, 9 7/8 251 mm FB-CY F8 Conical Inserts, Enhanced Shirttail 9 7/8 251 mm 9 7/8" 251 mm FB-CYV F FB-CYHV F7 9 7/8" 251 mm FB-CY- HW F72 Conical Inserts, Enhanced Shirttail, Aggressive Cutting Structure Conical Inserts, Enhanced Shirttail, Hardnose on Cones, Wear Resistant Carbide Conical Inserts, Enhanced Shirttail, Hardnose on Cones, Aggressive Cutting Structure 9 7/8" 251 mm FB-CY F7 Conical Inserts, Enhanced Shirttail Conical Inserts, 9 7/8" 251 mm FB-CYH F7 Enhanced Shirttail, Hardnose on Cones Jet Jet Jet Jet Jet Jet Jet Operating Suggestions WOB/RPM 44,400-74,100 lbs WOB 44,400-74,100 lbs WOB 44,400-83,900 lbs WOB 44,400-74,100 lbs WOB 44,400-74,100 lbs WOB 44,400-83,900 lbs WOB 44,400-83,900 lbs WOB 44,400-83,900 lbs WOB 10 5/32" 258 mm FB-CYH F7 Conical Inserts, Enhanced Shirttail, Hardnose on Cones Jet ,400-83,900 lbs WOB Conical Inserts, mm FB-CAV F33, Aggressive Cutting Structure Jet ,900-58,400 lbs WOB 70 to 150 RPM mm FB-CA F35 Conical Inserts, Jet ,00-47,800 lbs WOB mm FB-CAHV F33 Conical Inserts,, Hard Nose on Cones, Aggressive Cutting Structure Jet ,900-58,400 lbs WOB 70 to 150 RPM mm FB-CA F4 Conical Inserts, Jet ,900-58,400 lbs WOB 70 to 150 RPM mm FB-CA F5 Conical Inserts, Jet ,200-9,100 lbs WOB 23

24 Blasthole Tricone Bits /4" Bit Diam. Product No. Product Code IADC Product Special Features Circ mm FB-CA F55 Conical Inserts, mm FB-CA F Conical Inserts, Conical Inserts,, Wear Resistant mm FB-CAW F Carbide mm FB-CY F5 Conical Inserts, Enhanced Shirttail Weight lbs kgs Jet Jet Jet Jet Pin Conn mm FB-C F Conical Inserts Jet mm FB-CYV F7 Conical Inserts, Enhanced Shirttail, Aggressive Cutting Structure mm FB-CY F7 Conical Inserts, Enhanced Shirttail Jet Jet Operating Suggestions WOB/RPM 37,200-9,100 lbs WOB 47,800-79,700 lbs WOB 47,800-79,700 lbs WOB 47,800-79,700 lbs WOB 47,800-79,700 lbs WOB 47,800-79,700 lbs WOB 47,800-90,300 lbs WOB 11" 279 mm FB-CY F5 Conical Inserts, Enhanced Shirttail Jet ,500-71,500 lbs WOB 11" 279 mm FB-CY F Conical Inserts, Enhanced Shirttail Jet ,500-82,500 lbs WOB 11" 279 mm FB-CY F7 Conical Inserts, Enhanced Shirttail Jet ,500-93,500 lbs WOB 12 1/4" 311 mm FB-CA F5 Conical Inserts, 12 1/4" 311 mm FB-CY F Conical Inserts, Enhanced Shirttail 12 1/4" 311 mm FB-CYV F7 Conical Inserts, Enhanced Shirttail, Aggressive Cutting Structure Jet Jet Jet /4" 311 mm FB-C F Conical Inserts Jet /4" 311 mm FB-CY F5 Conical Inserts, Enhanced Shirttail Jet ,900-79,00 lbs WOB 55,100-91,900 lbs WOB 55,100-91,900 lbs WOB 55,100-91,900 lbs WOB 55,100-91,900 lbs WOB 24

25 Blasthole Tricone Bits 12 1/4" - 15" Bit Diam. 12 1/4" 311 mm Product No. Product Code IADC Product Special Features Circ FB-CYV F Conical Inserts, Enhanced Shirttail, Aggressive Cutting Structure 12 1/4" 311 mm FB-CY F7 Conical Inserts, Enhanced Shirttail Weight lbs kgs Jet Jet Pin Conn. 12 1/4" 311 mm FB-C F7 Conical Inserts Jet Conical Inserts, 12 1/4" 311 mm FB-CW F7 Wear Resistant Carbide 12 1/4" 311 mm FB-CY F75 Conical Inserts, Enhanced Shirttail Jet Jet /4" 311 mm FB-C F75 Conical Inserts Jet Operating Suggestions WOB/RPM 55,100-91,900 lbs WOB 55, ,100 lbs WOB 55,100-91,900 lbs WOB 55,100-91,900 lbs WOB 55, ,100 lbs WOB 55,100-91,900 lbs WOB 7 15" 381 mm FB-C F Conical Inserts Jet , ,500 lbs WOB 25

26 TCI Waterwell Bits 2 31/4" - Bit Diam. Product No. Product Code IADC Product Special Features Circ. Weight Pin Conn. 2 31/4" 3 mm FW-FR F5 Chisel Inserts Regular n- 2 31/4" 3 mm FW-CR F7 Conical Inserts Regular lbs kgs 4n- Operating Suggestions WOB / RPM ,100 lbs WOB 30,400-57,400 lbs WOB 2 1/2" 4 mm FW-FR F5 Chisel Inserts Regular n- 2 1/2" 4 mm FW-CR F7 Conical Inserts Regular n- 8,800-1,300 lbs WOB 11,300-21,300 lbs WOB 2 7 mm FW-FR F5 Chisel Inserts Regular n- 2 7 mm FW-CR F7 Conical Inserts Regular n- 9,200-17,100 lbs WOB 11,800-22,300 lbs WOB 73 mm FW-FR F5 Chisel Inserts Regular n- 10,100-18,700 lbs WOB 2 15/1" 75 mm FW-FR F5 Chisel Inserts Regular n- 2 15/1" 75 mm FW-CR F7 Conical Inserts Regular n- 10,300-19,100 lbs WOB 13,200-25,000 lbs WOB 3" 7 mm FW-FR F5 Chisel Inserts Regular n- 3" 7 mm FW-CR F7 Conical Inserts Regular n- 10,500-19,500 lbs WOB 13,500-25,500 lbs WOB 3 1/8" 79 mm FW-FR F5 Chisel Inserts Regular n- 10,900-20,300 lbs WOB 3 1/4" 83 mm FW-FR F5 Chisel Inserts Regular n- 11,400-21,100 lbs WOB 89 mm FW-FR F5 Chisel Inserts Regular mm FW-FR F5 Chisel Inserts Regular n- 89 mm FW-FR F5 Chisel Inserts Regular mm FW-FR F5 Chisel Inserts Regular n- 89 mm FW-CR F7 Conical Inserts Regular mm FW-CR F7 Conical Inserts Regular n- 89 mm FW-CR F7 Conical Inserts Regular ,300-22,800 lbs WOB 12,300-22,800 lbs WOB 12,300-22,800 lbs WOB 12,300-22,800 lbs WOB 15,800-29,800 lbs WOB 15,750-29,750 lbs WOB 15,800-29,800 lbs WOB 2

27 TCI Waterwell Bits 3 21/32" - 4 1/2" Bit Diam. Product No. Product Code IADC Product Special Features Circ. Weight Pin Conn. 3 21/32" 93 mm FW-FR F5 Chisel Inserts Regular /32" 93 mm FW-CR F7 Conical Inserts Regular lbs kgs Operating Suggestions WOB / RPM 12,800-23,800 lbs WOB 1,500-31,100 lbs WOB 3 3/4" 95 mm FW-FR F5 Chisel Inserts Regular /4" 95 mm FW-FR F5 Chisel Inserts Regular ,100-24,400 lbs WOB 13,100-24,400 lbs WOB 3 7/8" 98 mm FW-FR F5 Chisel Inserts Regular ,00-25,200 lbs WOB 3 7/8" 98 mm FW-FR F5 Chisel Inserts Regular ,00-25,200 lbs WOB 3 7/8" 98 mm FW-CR F7 Conical Inserts Regular ,400-32,900 lbs WOB 3 7/8" 98 mm FW-CR F7 Conical Inserts Regular ,400-32,900 lbs WOB 4" 102 mm FW-FR F5 Chisel Inserts Regular " 102 mm FW-FR F5 Chisel Inserts Regular " 102 mm FW-CR F7 Conical Inserts Regular " 102 mm FW-CR F7 Conical Inserts Regular ,000-2,000 lbs WOB 14,000-2,000 lbs WOB 18,000-34,000 lbs WOB 18,000-34,000 lbs WOB 4 1/8" 105 mm FW-FR F5 Chisel Inserts Regular /8" 105 mm FW-FR F5 Chisel Inserts Regular ,400-2,800 lbs WOB 14,400-2,800 lbs WOB 4 1/4" 108 mm FW-FR F5 Chisel Inserts Regular /4" 108 mm FW-FR F5 Chisel Inserts Regular ,900-27,00 lbs WOB 14,900-27,00 lbs WOB 4 3/8" 111 mm FW-FR F5 Chisel Inserts Regular ,300-28,400 lbs WOB 4 1/2" 114 mm FW-FR F5 Chisel Inserts Regular /2" 114 mm FW-FR F5 Chisel Inserts Regular /2" 114 mm FW-CR F7 Conical Inserts Regular /2" 114 mm FW-CR F7 Conical Inserts Regular ,800-29,300 lbs WOB 15,800-29,300 lbs WOB 20,300-38,300 lbs WOB 20,300-38,300 lbs WOB 27

28 TCI Waterwell Bits 4-5 3/8" Bit Diam. Product No. Product Code IADC Product Special Features Circ. Weight Pin Conn mm FW-FR F5 Chisel Inserts Regular mm FW-CR F7 Conical Inserts Regular 13.2 lbs kgs Operating Suggestions WOB / RPM 15,800-29,300 lbs WOB 20,300-38,300 lbs WOB 4 3/4" 121 mm FW-FR F5 Chisel Inserts Regular /4" 121 mm FW-FR F5 Chisel Inserts Regular /4" 121 mm FW-CR F7 Conical Inserts Regular /4" 121 mm FW-CR F7 Conical Inserts Regular ,00-30,900 lbs WOB 1,00-30,900 lbs WOB 21,400-40,400 lbs WOB 21,400-40,400 lbs WOB 4 7/8" 124 mm FW-FR F5 Chisel Inserts Regular /8" 124 mm FW-FR F5 Chisel Inserts Regular /8" 124 mm FW-CR F7 Conical Inserts Regular ,100-31,700 lbs WOB 17,100-31,700 lbs WOB 21,400-40,400 lbs WOB 5" 127 mm FW-FR F5 Chisel Inserts Regular " 127 mm FW-FR F5 Chisel Inserts Regular " 127 mm FW-CR F7 Conical Inserts Regular ,500-32,500 lbs WOB 17,500-32,500 lbs WOB 22,500-42,500 lbs WOB 5 1/8" 130 mm FW-FR F5 Chisel Inserts Regular /8" 130 mm FW-FR F5 Chisel Inserts Regular /8" 130 mm FW-FR F5 Chisel Inserts Regular /8" 130 mm FW-CR F7 Conical Inserts Regular ,125-20,500 lbs WOB 70 to 130 RPM 5,125-20,500 lbs WOB 70 to 130 RPM 7,88-23,03 lbs WOB 23,100-43,00 lbs WOB 5 1/4" 133 mm FW-FR F5 Chisel Inserts Regular ,250-21,000 lbs WOB 70 to 130 RPM 5 1/4" 133 mm FW-FR F5 Chisel Inserts Regular ,400-34,100 lbs WOB 5 1/4" 133 mm FW-CR F7 Conical Inserts Regular ,00-44,00 lbs WOB 5 3/8" 137 mm FW-FR F5 Chisel Inserts Regular ,800-34,900 lbs WOB 28

29 TCI Waterwell Bits 5 1/2" - 1/8" Bit Diam. 5 1/2" 140 mm 5 1/2" 140 mm 5 1/2" 140 mm Product No. Product Code IADC Product Special Features Circ. Weight lbs kgs Pin Conn FW-FR F5 Chisel Inserts Regular FW-F F5 Chisel Inserts Jet FW-FR F5 Chisel Inserts Regular /2" 140 mm FW-C F Conical Inserts Jet /2" 140 mm FW-CR F7 Conical Inserts Regular Operating Suggestions WOB / RPM 19,300-35,800 lbs WOB 19,300-35,800 lbs WOB 19,300-35,800 lbs WOB 24,800-41,300 lbs WOB 24,800-4,800 lbs WOB mm FW-FR F5 Chisel Inserts Regular mm FW-FR F5 Chisel Inserts Regular mm FW-C F Conical Inserts Jet mm FW-CR F7 Conical Inserts Regular ,700-3,00 lbs WOB 19,700-3,00 lbs WOB 19,700-3,00 lbs WOB 20,100-37,400 lbs WOB 5 3/4" 14 mm 5 3/4" 14 mm 5 3/4" 14 mm FW-CR F4 Conical Inserts Regular FW-FR F5 Chisel Inserts Regular FW-CR F7 Conical Inserts Regular ,00-31,00 lbs WOB 70 to 150 RPM 20,100-37,400 lbs WOB 25,900-48,900 lbs WOB 5 7/8" 149 mm FW-CR F4 Conical Inserts Regular /8" 149 mm FW-FR F5 Chisel Inserts Regular /8" 149 mm FW-FR F5 Chisel Inserts Regular /8" 149 mm FW-FR F Chisel Inserts Regular /8" 149 mm FW-CR F7 Conical Inserts Regular ,400-30,100 lbs WOB 70 to 150 RPM 20,500-38,200 lbs WOB 19,700-33,100 lbs WOB 23,500-44,100 lbs WOB 2,400-50,000 lbs WOB " 152 mm FW-FR F5 Chisel Inserts Regular " 152 mm FW-FR F5 Chisel Inserts Regular " 152 mm FW-FR F Chisel Inserts Regular " 152 mm FW-CR F7 Conical Inserts Regular ,000-39,000 lbs WOB 21,000-39,000 lbs WOB 27,000-45,000 lbs WOB 27,000-51,000 lbs WOB 1/8" 15 mm FW-FR F5 Chisel Inserts Regular ,400-39,800 lbs WOB 29

30 TCI Waterwell Bits 1/4" - 3/4" Bit Diam. 1/4" 159 mm Product No. Product Code IADC Product Special Features Circ. Weight Pin Conn FW-FR F5 Chisel Inserts Regular lbs kgs Operating Suggestions WOB / RPM 21,900-40,000 lbs WOB 1/2" 15 mm FW-FR F5 Chisel Inserts Regular /2" 15 mm FW-FR F5 Chisel Inserts Regular /2" 15 mm FW-C F Conical Inserts Jet /2" 15 mm FW-CR F7 Conical Inserts Regular /2" 15 mm FW-C F7 Conical Inserts Jet ,800-42,300 lbs WOB 22,800-42,300 lbs WOB 29,300-48,800 lbs WOB 29,300-55,300 lbs WOB 29,300-55,300 lbs WOB 18 mm FW-FR F5 Chisel Inserts Regular ,200-43,100 lbs WOB 3/4" 171 mm FW-FR F5 Chisel Inserts Regular /4" 171 mm FW-FR F5 Chisel Inserts Regular ,00-43,900 lbs WOB 23,00-43,900 lbs WOB 30

31 Steel Waterwell Bits 2 1/2" - 3 1/4" Bit Diam. Product No. Product Code IADC Product Special Features Circ. 2 1/2" 4 mm FW-1R F11 Conventional Gage 2 1/2" 4 mm FW-1R F23 Conventional Gage 2 1/2" 4 mm FW-1R F32 Conventional Gage Weight lbs kgs Regular Regular Regular Pin Conn. 4n- 4n- 4n- 2 1/2" 4 mm FW-5R F33 Web Gage Regular n- Operating Suggestions WOB/ RPM 3,800-8,800 lbs WOB 11,300-18,800 lbs WOB 11,300-18,800 lbs WOB 8,800-13,800 lbs WOB 2 7 mm FW-1R F23 Conventional Gage Regular mm FW-5R F33 Web Gage Regular n- 4n- 9,200-14,400 lbs WOB 11,800-19,700 lbs WOB 73 mm FW-1R F23 Conventional Gage 73 mm FW-1R F32 Conventional Gage Regular Regular mm FW-5R F33 Web Gage Regular n- 4n- 4n- 10,100-15,800 lbs WOB 12,900-21,00 lbs WOB 12,900-21,00 lbs WOB 2 15/1" 75 mm FW-1R F21 Conventional Gage Regular n- 10,300-1,200 lbs WOB 2 15/1" 75 mm FW-1R F32 Conventional Gage Regular n- 13,200-22,000 lbs WOB 2 15/1" 75 mm FW-5R F33 Web Gage Regular n- 13,200-22,000 lbs WOB 3" 7 mm FW-1R F23 Conventional Gage 3" 7 mm FW-1R F32 Conventional Gage Regular Regular " 7 mm FW-5R F33 Web Gage Regular n- 4n- 4n- 10,500-1,500 lbs WOB 50 to 150 RPM 13,500-22,500 lbs WOB 13,500-22,500 lbs WOB 3 1/8" 79 mm FW-1R F32 Conventional Gage Regular /8" 79 mm FW-5R F33 Web Gage Regular n- 4n- 14,100-23,400 lbs WOB 14,100-23,400 lbs WOB 3 1/4" 83 mm FW-1R F11 Conventional Gage 3 1/4" 83 mm FW-1R F23 Conventional Gage Regular Regular /4" 83 mm FW-5R F33 Web Gage Regular n- 4n- 4n- 4,900-11,400 lbs WOB 11,400-17,900 lbs WOB 14,00-24,400 lbs WOB 31

32 Steel Waterwell Bits - 3 7/8" Bit Diam. Product No. Product Code IADC Product Special Features Circ. 89 mm FW-1R F11 Conventional Gage 89 mm FW-1R F23 Conventional Gage 89 mm FW-1R F23 Conventional Gage 89 mm FW-1R F23 Conventional Gage 89 mm FW-1R F23 Conventional Gage 89 mm FW-1R F32 Conventional Gage Weight lbs kgs Regular Regular Regular Regular Regular Regular Pin Conn. 4n- 4n- 89 mm FW-5R F33 Web Gage Regular mm FW-5R F33 Web Gage Regular n- 89 mm FW-5R F33 Web Gage Regular Operating Suggestions WOB/ RPM 5,300-12,300 lbs WOB 12,250-19,250 lbs WOB 12,250-19,250 lbs WOB 12,250-19,250 lbs WOB 12,250-19,250 lbs WOB 15,750-2,300 lbs WOB 15,750-2,300 lbs WOB 15,750-2,300 lbs WOB 15,750-2,300 lbs WOB 3 92 mm FW-5R F33 Web Gage Regular ,750-2,300 lbs WOB 3 3/4" 95 mm FW-1R F11 Conventional Gage 3 3/4" 95 mm FW-1R F23 Conventional Gage 3 3/4" 95 mm FW-1R F23 Conventional Gage Regular Regular Regular /4" 95 mm FW-2R F32 Tapered Gage Regular /4" 95 mm FW-2R F32 Tapered Gage Regular /4" 95 mm FW-5R F33 Web Gage Regular /4" 95 mm FW-5R F33 Web Gage Regular ,00-13,100 lbs WOB 13,100-20,00 lbs WOB 13,100-20,00 lbs WOB 1,900-28,100 lbs WOB 1,900-28,100 lbs WOB 1,900-28,100 lbs WOB 1,900-28,100 lbs WOB 3 7/8" 98 mm FW-1R F11 Conventional Gage Regular ,800-13,00 lbs WOB 3 7/8" 98 mm FW-1R F11 Conventional Gage Regular ,800-13,00 lbs WOB 3 7/8" 98 mm FW-1R F23 Conventional Gage Regular ,00-21,300 lbs WOB 3 7/8" 98 mm FW-1R F23 Conventional Gage Regular ,500-21,300 lbs WOB 3 7/8" 98 mm FW-1R F32 Conventional Gage Regular ,400-29,100 lbs WOB 3 7/8" 98 mm FW-1R F32 Conventional Gage Regular ,400-29,100 lbs WOB 32

33 Steel Waterwell Bits 3 7/8" - 4 1/4" Bit Diam. Product No. Product Code IADC Product Special Features Circ. Weight Pin Conn. 3 7/8" 98 mm FW-5R F33 Web Gage Regular /8" 98 mm FW-5R F33 Web Gage Regular lbs kgs Operating Suggestions WOB/ RPM 17,400-29,100 lbs WOB 17,400-29,100 lbs WOB 4" 102 mm FW-1R F11 Conventional Gage 4" 102 mm FW-1R F23 Conventional Gage 4" 102 mm FW-1R F23 Conventional Gage 4" 102 mm FW-1R F32 Conventional Gage 4" 102 mm FW-1R F32 Conventional Gage Regular Regular Regular Regular Regular " 102 mm FW-5R F33 Web Gage Regular " 102 mm FW-5R F33 Web Gage Regular 8.8 4,000-14,000 lbs WOB 14,000-22,000 lbs WOB 14,000-22,000 lbs WOB 18,000-30,000 lbs WOB 18,000-30,000 lbs WOB 18,000-30,000 lbs WOB 18,000-30,000 lbs WOB 4 1/8" 105 mm FW-1R F11 Conventional Gage 4 1/8" 105 mm FW-1R F11 Conventional Gage 4 1/8" 105 mm FW-1R F23 Conventional Gage 4 1/8" 105 mm FW-1R F23 Conventional Gage 4 1/8" 105 mm FW-1R F32 Conventional Gage 4 1/8" 105 mm FW-1R F32 Conventional Gage Regular Regular Regular Regular Regular Regular /8" 105 mm FW-5R F33 Web Gage Regular 8.8 4,200-14,400 lbs WOB,200-14,400 lbs WOB 14,400-22,700 lbs WOB 14,400-22,700 lbs WOB 18,00-30,900 lbs WOB 18,00-30,900 lbs WOB 18,00-30,900 lbs WOB 4 1/4" 108 mm FW-1R F11 Conventional Gage 4 1/4" 108 mm FW-1R F11 Conventional Gage 4 1/4" 108 mm FW-1R F23 Conventional Gage 4 1/4" 108 mm FW-1R F23 Conventional Gage Regular Regular Regular Regular /4" 108 mm FW-2R F32 Tapered Gage Regular /4" 108 mm FW-5R F33 Web Gage Regular /4" 108 mm FW-5R F33 Web Gage Regular 8.8 4,400-14,900 lbs WOB,400-14,900 lbs WOB 14,900-23,400 lbs WOB 14,900-23,400 lbs WOB 19,100-31,900 lbs WOB 19,100-31,900 lbs WOB 19,100-31,900 lbs WOB 33