Name: API 9 7/8'''' rubber sealing tungsten carbid insert bit/TRICONE BIT/rock bit
Brand: HJ
Availability: InStock

Product Details

Model	TCI BIT, STEEL TOOTH BIT
IADC CODE	116 117 12 6127 136 137 216 217 226 226 316 317 326 327 336 337 115 125 135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347
IADC CODE	417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445 525 625 635 416 427 436 446 447 516 526 537 547 516 536 535
available sizes:	From 2 7/8 to 26” larger sizes for hole opener bit ,reamer bit
advantage	most favourable price and best qualtity
bearing type:	sealed bearing and non-sealed bearing HJ(metal sealed journal bearing) HA (rubber sealed journal bearing aircooled bearing type
Formation or layer	soft ,medium soft ,hard,medium hard,very hard formation
Button size (extra features)	Button bit,saw teeth 1) Y-Conical teeth 2) X-chisel teeth 3)K- wide teeth 4)G- Gague protection
Material	Alloy steel ,carbide
Packing	Wooden case or steel case
Payment terms	T/T,L/C,Western union
Delivery terms	By sea or by air
Delivery time	Within 3 to 7 days
Market	Canada, USA,Middle east ,Africa,Europe

Recommended drilling parameters of tri-cone rock bits

Rock formation		Bit type	Bit size		Drilling weight	Rotary speed
Rock formation		Bit type	mm	inch	kN/mm	r/min
Very soft	Soft Marl, Clays, Sands, Salts etc.	1	187.3~346.1	7 3/8~13 5/8	441~735	120~50
soft	Clays, Soft Shale, Marl, Sands, Salts etc.	2	95.2~174.6	3 3/4-6 7/8	245-490	100-50
soft	Clays, Soft Shale, Marl, Sands, Salts etc.	2	187.3~346.1	7 3/8-13 5/8	490-784	90-40
Medium soft	Shale, Marl, Sandstone, Soft Limestone etc.	3	95.2~174.6	3 3/4-6 7/8	245-490	80-40
Medium soft	Shale, Marl, Sandstone, Soft Limestone etc.	3	187.3~311.1	7 3/8- 12 1/4	490-784	80-40
medium	Hard Shale, Limestone, Medium/Hard Sandstone etc.	4	95.2~174.6	3 3/4-6 7/8	294-539	80-60
medium	Hard Shale, Limestone, Medium/Hard Sandstone etc.	4	187.3~241.3	7 3/8-9 1/2	539-833	60-40
medium hard	Hard Dolomite, Limestone, Hard Sandy, Rock etc.	5	95.2~174.6	3 3/4-6 7/8	294-539	80-60
medium hard	Hard Dolomite, Limestone, Hard Sandy, Rock etc.	5	187.3~241.3	7 3/8-9 1/2	539-833	60-40
hard	Sandy, Shale, Quartzite, Hard Dolomite, Hard Sandstone etc.	6	95.~-174.6	3 3/4-6 7/8	294-539	80-40
hard	Sandy, Shale, Quartzite, Hard Dolomite, Hard Sandstone etc.	6	187.3-215.9	7 3/8-8 1/2	580-882	60-40
Very hard	Quartzite, Chert, Basalt Granites, Pyrites etc.	7	95.2-174.6	3 3/4-6 7/8	294-539	80-40

Bearing type:sealed bearing and non-sealed bearing

metal sealed journal bearing

rubber sealed journal bearing

cutting structure:The back cone and the teeth all surface is are hardfaced strengthening, improved steel tooth shape and welding materials,showing teeth higher

Application formation:Soft with low compressive strength and high drillability, such as shale, clay, salt bed and etc