Pinnacle Drilling

Providing Innovative Drilling Solutions

Tri-Cone Bits

Pinnacle typically sells Tri-Cone Bits in sizes ranging from 4″ to over 24″. Larger jobs require larger tricones so sizes can range up to 36. Size range and type of ground conditions will determine the bit you need. 

High quality steel

High performance and reliability

Advanced Technology

Top Quality Tri-Cone Drill Bits

As a proud distributor of Robit, Pinnacle Drilling Products offers a a wide range of top quality tri-cone drill bits fabricated with high-strength tempered steel designed to maximize penetration rates through tough rock. Available in button and mill tooth styles. Available in TCI (carbide buttons) and mill tooth configurations.

IADC CODES

To make it easier for drillers to describe the rock bit they want, use the IADC classification codes. The IADC bit classification is a system in which the first three digits classify the bit according to the formation it is designed to drill and the bearing/seal design used.

  • First Digit: 1, 2, and 3 designate STEEL TOOTH BITS with 1 for soft, 2 for medium and 3 for hard formations. 4, 5, 6, 7 and 8 designate TUNGSTEN CARBIDE INSERT BITS for varying formation hardness with 4 being the softest and 8 the hardest.
  • Second Digit: 1, 2, 3 and 4 are further breakdown of formation with 1 being the softest and 4 the hardest.
  • Third Digit: This digit will classify the bit according to bearing/seal type – see information on different bearing types – and special gauge wear protection as follows:
    • Standard open bearing roller bit
    • Standard open bearing roller bit, air-cooled
    • Standard open bearing roller bit with gauge protection which is defined as carbide inserts in the heel of the cone
    • Sealed roller bearing bit
    • Sealed roller bearing bit with gauge protection
    • Journal sealed bearing bit
    • Journal sealed bearing bit with gauge protection
  • Fourth Digit: The following letter codes are used in the fourth digit position to indicate additional features: A. Air Application R. Reinforced Welds C. Center Jet S. Standard Steel Tooth D. Deviation Control X. Chisel Insert E. Extended Jet

Water Well TCI Bits

Diameter (mm)64
Diameter (in.)2 ½
IADC521/721
FormationMedium, Hard
Pin SizeN Rod
Weight (kg)2,2
Diameter (mm)67
Diameter (in.)2 ⅝
IADC521/721
FormationMedium, Hard
Pin SizeN Rod
Weight (kg)2,2
Diameter (mm)73
Diameter (in.)2 ⅞
IADC721
FormationHard
Pin SizeN Rod
Weight (kg)2,4
Diameter (mm)75
Diameter (in.)2 15/16
IADC721
FormationHard
Pin SizeN Rod
Weight (kg)2,4
Diameter (mm)76
Diameter (in.)3
IADC521/721
FormationMedium, Hard
Pin SizeN Rod
Weight (kg)2,4
Diameter (mm)79
Diameter (in.)3 ⅛
IADC521
FormationSoft, Medium
Pin SizeN Rod
Weight (kg)2,4
Diameter (mm)89
Diameter (in.)3 ½
IADC521/721
FormationMedium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)3,4
Diameter (mm)98
Diameter (in.)3 ⅞
IADC521/621
FormationSoft, Medium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)4,4
Diameter (mm)101
Diameter (in.)4
IADC521/721
FormationSoft, Medium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)4,4
Diameter (mm)105
Diameter (in.)4 ⅛
IADC521
FormationSoft, Medium
Pin Size2 ⅜” API Reg
Weight (kg)5,0
Diameter (mm)108
Diameter (in.)4 ¼
IADC521
FormationSoft, Medium
Pin Size2 ⅜” API Reg
Weight (kg)5,0
Diameter (mm)114
Diameter (in.)4 ½
IADC521/721
FormationSoft, Medium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)5,4
Diameter (mm)121
Diameter (in.)4 ¾
IADC521/721
FormationSoft, Medium, Hard
Pin Size2 ⅞” API Reg
Weight (kg)7,8
Diameter (mm)117
Diameter (in.)4 ⅝
IADC521
FormationSoft, Medium
Pin Size2 ⅞” API Reg
Weight (kg)5,4
Diameter (mm)124
Diameter (in.)4 ⅞
IADC721
FormationHard
Pin Size2 ⅞” API Reg
Weight (kg)9,2
Diameter (mm)127
Diameter (in.)5
IADC721
FormationHard
Pin Size2 ⅞” API Reg
Weight (kg)9,2
Diameter (mm)130
Diameter (in.)5 ⅛
IADC521/721
FormationSoft, Medium, Hard
Pin Size2 ⅞” API Reg
Weight (kg)9,5
Diameter (mm)133
Diameter (in.)5 ¼
IADC521
FormationSoft, Medium
Pin Size2 ⅞” API Reg
Weight (kg)9,9
Diameter (mm)137
Diameter (in.)5 ⅜
IADC521
FormationSoft, Medium
Pin Size2 ⅞” API Reg
Weight (kg)9,9
Diameter (mm)140
Diameter (in.)5 ½
IADC521/721
FormationSoft, Medium, Hard
Pin Size2 ⅞” API Reg
Weight (kg)12,0
Diameter (mm)143
Diameter (in.)5 ⅝
IADC521
FormationSoft, Medium
Pin Size3 ½” API Reg
Weight (kg)12,0
Diameter (mm)146
Diameter (in.)5 ¾
IADC721
FormationHard
Pin Size3 ½” API Reg
Weight (kg)12,0
Diameter (mm)149
Diameter (in.)5 ⅞
IADC521
FormationSoft, Medium
Pin Size3 ½” API Reg
Weight (kg)14,6

Diameter (mm)152Diameter (in.)6IADC521/621/721FormationSoft, Medium, HardPin Size3 ½” API RegWeight (kg)14,6

Diameter (mm)156
Diameter (in.)6 ⅛
IADC521
FormationSoft, Medium
Pin Size3 ½” API Reg
Weight (kg)14,6
Diameter (mm)159
Diameter (in.)6 ¼
IADC521
FormationSoft, Medium
Pin Size3 ½” API Reg
Weight (kg)16,0
Diameter (mm)165
Diameter (in.)6 ½
IADC521/721
FormationSoft, Medium, Hard
Pin Size3 ½” API Reg
Weight (kg)18,5
Diameter (mm)171
Diameter (in.)6 ¾
IADC521/721
FormationSoft, Medium, Hard
Pin Size3 ½” API Reg
Weight (kg)18,5
Diameter (mm)178
Diameter (in.)7
IADC521
FormationSoft, Medium
Pin Size3 ½” API Reg
Weight (kg)18,5
Diameter (mm)187
Diameter (in.)7 ⅜
IADC721
FormationHard
Pin Size3 ½” API Reg
Weight (kg)18,5
Diameter (mm)191
Diameter (in.)7 ½
IADC521
FormationSoft, Medium
Pin Size4 ½” API Reg
Weight (kg)25,0
Diameter (mm)200
Diameter (in.)7 ⅞
IADC721
FormationHard
Pin Size4 ½” API Reg
Weight (kg)28,0
Diameter (mm)241
Diameter (in.)9 ½
IADC521
FormationSoft, Medium
Pin Size4 ½” API Reg
Weight (kg)38,0

Water Well ST Bits

Diameter (mm)64
Diameter (in.)2 ½
IADC111/231/321
FormationSoft, Medium, Hard
Pin SizeN Rod
Weight (kg)1,7
Diameter (mm)67
Diameter (in.)2 ⅝
IADC111/231/321
FormationSoft, Medium, Hard
Pin SizeN Rod
Weight (kg)1,7
Diameter (mm)73
Diameter (in.)2 ⅞
IADC111/231/321
FormationSoft, Medium, Hard
Pin SizeN Rod
Weight (kg)2,0
Diameter (mm)75
Diameter (in.)2 15/16
IADC111/231/321
FormationSoft, Medium, Hard
Pin SizeN Rod
Weight (kg)2,0
Diameter (mm)76
Diameter (in.)3
IADC111/231/321
FormationSoft, Medium, Hard
Pin SizeN Rod
Weight (kg)2,0
Diameter (mm)89
Diameter (in.)3 ½
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)3,1
Diameter (mm)95
Diameter (in.)3 ¾
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)3,7
Diameter (mm)98
Diameter (in.)3 ⅞
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)3,7
Diameter (mm)101
Diameter (in.)4
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)3,8
Diameter (mm)105
Diameter (in.)4 ⅛
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)4,2
Diameter (mm)108
Diameter (in.)4 ¼
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)4,2
Diameter (mm)114
Diameter (in.)4 ½
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅜” API Reg
Weight (kg)4,2
Diameter (mm)121
Diameter (in.)4 ¾
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅞” API Reg
Weight (kg)7,3
Diameter (mm)124
Diameter (in.)4 ⅞
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅞” API Reg
Weight (kg)6,6
Diameter (mm)127
Diameter (in.)5
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅞” API Reg
Weight (kg)6,8
Diameter (mm)130
Diameter (in.)5 ⅛
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅞” API Reg
Weight (kg)8,5
Diameter (mm)137
Diameter (in.)5 ⅜
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅞” API Reg
Weight (kg)8,5
Diameter (mm)140
Diameter (in.)5 ½
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size2 ⅞” API Reg
Weight (kg)9,2
Diameter (mm)143
Diameter (in.)5 ⅝
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size3 ½” API Reg
Weight (kg)9,2
Diameter (mm)149
Diameter (in.)5 ⅞
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size3 ½” API Reg
Weight (kg)13,7
Diameter (mm)152
Diameter (in.)6
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size3 ½” API Reg
Weight (kg)13,7
Diameter (mm)156
Diameter (in.)6 ⅛
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size3 ½” API Reg
Weight (kg)13,7
Diameter (mm)159
Diameter (in.)6 ¼
IADC311/111
FormationSoft, Hard
Pin Size3 ½” API Reg
Weight (kg)14,8
Diameter (mm)165
Diameter (in.)6 ½
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size3 ½” API Reg
Weight (kg)16,5
Diameter (mm)171
Diameter (in.)6 ¾
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size3 ½” API Reg
Weight (kg)16,5
Diameter (mm)178
Diameter (in.)7
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size3 ½” API Reg
Weight (kg)16,5
Diameter (mm)191
Diameter (in.)7 ½
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size4 ½” API Reg
Weight (kg)22,0
Diameter (mm)194
Diameter (in.)7 ⅝
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size4 ½” API Reg
Weight (kg)22,0
Diameter (mm)200
Diameter (in.)7 ⅞
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size4 ½” API Reg
Weight (kg)22,0
Diameter (mm)203
Diameter (in.)8
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size4 ½” API Reg
Weight (kg)23,0
Diameter (mm)216
Diameter (in.)8 ½
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size4 ½” API Reg
Weight (kg)32,0
Diameter (mm)241
Diameter (in.)9½ 
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size4 ½” API Reg
Weight (kg)32,0
Diameter (mm)251
Diameter (in.)9 ⅞
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size6 ⅝” API Reg
Weight (kg)46,0
Diameter (mm)254
Diameter (in.)10
IADC321
FormationHard
Pin Size6 ⅝” API Reg
Weight (kg)46,0
Diameter (mm)311
Diameter (in.)12 ¼
IADC111/231/321
FormationSoft, Medium, Hard
Pin Size6 ⅝” API Reg
Weight (kg)78,0
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