Products

8-1/2 inch roller bit with 55 tungsten carbide welding teeth for foundation drilling

8-1/2′ Roller Bits 55pcs Tungsten Carbide Bits Welding Type

Feature:

55 Tungsten Carbide Teeth – Delivers superior rock-cutting performance.
Welding Type Design – Ensures secure tooth retention and durability.
High Wear Resistance – Performs reliably in abrasive rock formations.
Fast Penetration Rate – Improves drilling efficiency and productivity.
Heavy-Duty Construction – Built for demanding foundation drilling projects.
Precision Manufacturing – Provides stable and consistent drilling performance.
Wide Compatibility – Suitable for rotary drilling rigs and core barrels.
Foundation Applications – Ideal for bored piling, bridge, and infrastructure projects.

DESCRIPTION

Products Details

Welding Instructions

1. Well protect the wheel sharp of each

2. Other from wear when welding the front and back cones.(as shown in the figure)

3. Cone welding angle C:3-5°

4. When welding, the cone must be continuously cooled with water to prevent burning of the sealing ring; Besides, this product has an internal oil supply system, and the claw body need to keep a lower temperature. Please cool it with water in time as welding to prevent the lubricating oil from overflowing

5. Please operate strictly in accordance withthe above process, so as not to affect the use effect.

Roller Bits Using Specifications

1. The maximum radial direction of a Single roller bits does’t exceed 70KN

2. It is forbidden to work in pause-drilling or continuous high intensity pressure, so as not to

cause the bearing to lock up.