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17 1/2" milled tooth tricone bits for well drilling mine drilling
17 1/2" milled tooth tricone bits for well drilling mine drilling
Supplier Info
[China Supplier]
Contact Person : Mr. Li Haikun
Tel : 86-731-22461968
Fax : 86-731-22462000
Product Detail
1). High quality and competitive price 2). many years experience in well drilling equipments

Available sizes:

4 5/8"(118mm), 5 7/8"(149mm), 6"(152mm), 6 1/2"(165mm), 6 5/8"(168mm),

7 1/2"(190mm), 7 7/8"(200mm),

8 1/2"(215.9mm), 9 1/2"(241mm),

9 5/8"(245mm), 11 5/8"(295mm),

12 1/4"(311mm), 13 5/8"(346mm),

14 3/4"(374mm), 15 1/2"(394mm)

16"(406mm),    17 1/2"(445mm),

18"(457mm),     26"(660mm)

Model NO.

437,447,517,527,537,547,617,637,737

IADC CODE

116,117,126,127,136,137,216,217,316,317,346,347

RPM(r/min)

140~60

WOB(KN/mm)

0.35~1.0

Thread Connection

7 5/8 reg pin

Bearing type

Sealed bearing and non-sealed bearing

HJ(metal sealed journal bearing)

HA(rubber sealed journal bearing)

Aircooled bearing type

Applicable Formations

Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc

Circulation system

Mud pump

Material

Alloy steel, carbide

Delivery terms

By sea or by air

application

Petroleum and gas, water well, mining and tectonic industries, oil field, construction, geothermal, directional boring and underground foundation work

1>Cutting Structure The durability of premium tungsten carbide insert is improved with new formulas and new techniques for insert bit. 2>Gauge Structure Multiple gauge protection with gauge trimmers on the heel of cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life. 3>Bearing Structure High precision bearing with two thrust faces. Ball lock the cone. Hardfaced head bearing surface. Cone bearing inlaid with friction-reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved. 4>Seal and Lubrication Premium O-ring, Optimal seal compression and curved seal structure can enhance the seal performance. The pressure compensator system and advanced grease can greatly increase the lubricating reliability. 5>Product Application It can receive high WOB in the conventional drilling. It is suitable for various formations by matching cutting structure with different tooth shape, tooth density and tooth exposure height. 

17 1/2" milled tooth tricone bits for well drilling mine drilling

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