Tel:
0086-190-3126-6699
Email:
jessica@sanlongdrillbit.cn
The rotary rock drill bit is an important part of the rotary drilling rig. Its main function is to quickly and accurately complete earth excavation, pile foundation construction and other tasks through high-speed rotation and strong digging force.
According to the cutting angle and layout of the palm, rotary rock drill bits can be divided into: 90-degree U-shaped roller bits, 120-degree U-shaped roller bits, starry sky roller bits, etc.
At the same time, we can also provide customized services according to the different needs of customers.
| Type | Application | Features |
| 90° U-shaped Roller Bit | Suitable for soft to medium-hard formations requiring steady drilling and fast cuttings clearance. | U-shaped groove with a 90° angle for stable cutting in alternating hard and soft formations, improves cuttings removal. |
| 120° U-shaped Roller Bit | Suitable for medium to softer formations, enhancing efficiency in clearing large volumes of cuttings. | U-shaped groove with a 120° angle for wider coverage, handles more cuttings for faster drilling in softer formations. |
| Full Cutter Layout (Starry Sky Roller Bit) | Suitable for hard rock formations, providing steady cutting force and high wear resistance. | Densely arranged cutters for full surface coverage, maximizes contact and cutting efficiency in hard rock. |
Bearings: Use high-precision rolling bearings, and the surface is inlaid with wear-resistant alloy and silver-plated to improve wear resistance.
Teeth: mixed tooth design to improve the wear resistance of the gear, specially designed for rotary excavation projects.
Surface design: strengthen the back nail design to protect the wheel body and extend the service life.
Rotary rock drill bits are specialized drilling tools designed to break and cut rock formations through continuous rotation and downward pressure. Unlike percussive bits, rotary bits rely on steady high-speed rotary motion to grind, crush, and remove material efficiently.
These bits are widely used in:
Earth excavation
Foundation and piling engineering
Mining and geothermal drilling
Water well and infrastructure construction
Hard and soft formation drilling
Our rotary tricone rock drill bits are manufactured using high-quality alloy steel, precision bearings, reinforced cutter structures, and advanced surface protection, ensuring long service life and reliable performance in demanding environments.
1. What is a rotary rock drill bit used for?
It is used on rotary drilling rigs to cut, grind, and remove rock formations in construction, mining, and foundation engineering.
2. Can rotary rock drill bits work in hard formations?
Yes. Our Starry Sky full-cutter layout is designed specifically for hard and abrasive rock, offering strong penetration and high wear resistance.
3. What is the difference between a rotary bit and a tricone bit?
Rotary bits focus on high-speed rotational excavation. A tricone bit uses three rotating cones to crush and grind rock. Our rotary rock drill bits can incorporate tricone-style roller sections depending on the model.
4. How do I choose the right bit?
Selection depends on formation hardness, drilling speed, volume of cuttings, and rig specifications. Contact us for personalized recommendations.
5. Do you offer customization?
Yes. Cutter layout, diameter, bearings, and tooth structure can all be customized.
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