Gold Member Since 2008
Audited Supplier
Zhuzhou ZZ Import and Export Co., Ltd.

Carbide Drilling Bits, Carbide Button Bits, Carbide Button Tips manufacturer / supplier in China, offering Rock Drill Bits, Tungsten Cemented Carbide Inserts Knux with Coating, Tungsten Cemented Carbide Roll and Rings Tungsten Cemented Carbide Products and so on.

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Rock Drill Bits

FOB Price: US $1,000-5,000 / Piece
Min. Order: 20 Pieces
Min. Order FOB Price
20 Pieces US $1,000-5,000/ Piece
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Production Capacity: 10000 Per Month
Transport Package: CTN
Payment Terms: L/C, T/T, D/P, Western Union

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Basic Info
  • Model NO.: many types
  • Quality: Good Performance and Stable Quality
  • Trademark: ZZ HARDMETAL
  • Origin: China
  • Usage: Coal, Ore, Water Well, Mining
  • Feature: Wear Resistant
  • Specification: many
  • HS Code: 82071300
Product Description
According to the different requirements of clients, our company designs various products, including milled tooth bits for soft rock and insert bits for very hard rock.
Different tungsten carbide teeth (sphere tooth, conical tooth, wedgy tooth and bucket shape tooth) are inlayed based on different applications.
Bearing seal type choice: Rubber seal and metal seal.

The structural features of rubber seal roller bits:

1, Inlaying high strength and high toughness carbide teeth to improve the teeth's shock-resistant and reduce the broken rate.
2, Better design of teeth rows, teeth number, teeth height and the unique teeth shape comprehensively improve the cutting capability and cutting speed.
3, Installing clamp spring to fix the cone to bear high drilling pressure.
4, The inner holes of cone bit are welded with antifriction tungsten carbide to improve the anti-seizure ability of bearing.
5, O-shaped high-saturated nitrile rubber seal ring is assembled. Optimized seal compression amount improves the reliability of bearing seal.
6, Entire rubber oil storage can limit the pressure difference, prevent the drilling fluid from flowing into lubrication system, provide good lubricity for the bearing system, ensure the regular work of O-shaped seal ring and increase the service life of the drill.
7, Adopt a new kind of low wear grease which can bear 250º Chigh temperature to improve the high temperature resisting of the lubrication system of the roller bits.

The structural features of metal seal roller bits

1, Adopt floating bearing structure which is made of new material with high strength, high elastic, high temperature resistance, and high wear resistance, and the surface is processed by solid lubricants. This floating component can reduce the relative liner speed of the bearing pair as well as restrain the temperature rising of the friction surface to effectively improve the reliability and the service life of the bearing under high drilling pressure and high drilling speed.
2, Adopt high-precision metal steal. A pair of elaborately designed and processed metal steal ring is assembled as the axial dynamic seal of the bearing. Two high-elasticity rubber power rings are installed in the steal area of the legs and cones as static seal. Optimized steal compression amount ensure the continuously good contacting of the seal surface of the two metal rings.
3, Steel balls locked with the cone to adapt the high rotation speed.
4, Entire rubber oil storage can limit the pressure difference, prevent the drilling fluid from flowing into lubrication system, and provide good lubricity for the bearing system.
5, Adopt a new kind of low wear grease which can bear 250º Chigh temperature.
6, The inserts bits inlayed high strength and high toughness carbide teeth with better design of teeth rows, teeth number, teeth height and unique teeth shape comprehensively improve the cutting capability and cutting speed. The surface of the teeth of the milled tooth bits is welded with new wear-resistant material to improve the service life of the teeth of the bits as well as keep the high mechanical drilling speed.

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Ms. Christine Tang
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