GT Series Roller Tricone Bits With Air Cooling Rolling Bearing
GT系列滚筒牙轮钻头与空气冷却滚动轴承
GT系列滚筒牙轮钻头与空气冷却滚动轴承适用于雷钻
尺寸，类型和建议的参数
尺寸 | 类型 | |
在 | 毫米 | |
9 7/8 | 250.8 | SK512G ， SK542G ， SK612G ， SK732G |
IADC | 推荐参数 | 形成 | |
压力位（K牛顿/平方毫米） | 转速 （转/分） | ||
512 | 0.35~0.7 | 120~60 | 泥石，石膏，盐岩，软页岩，棉岩 |
542 | 0.4~0.8 | 100~60 | 中软页岩，中棉岩，中软砂岩 |
612 | 0.5~0.9 | 100~60 | 泥板岩，石灰石，砂岩，白云岩 |
732 | 0.6~1.1 | 90~50 | 泥板岩，石灰岩公司，砂岩，粉砂岩，玄武岩， silexite ，花岗岩，石英砂岩，坚定白云岩，石灰岩公司，硫铁矿 |
GT series roller tricone bits with air cooling rolling bearing Suitable for mine drilling
Dimension, type and recommended parameter
Dimension | Type | |
in | mm | |
9 7/8 | 250.8 | SK512G, SK542G, SK612G, SK732G |
IADC | Recommended Parameter | Formation | |
Bit Pressure (k N/ mm) | Rotational Speed (r / min) | ||
512 | 0.35~0.7 | 120~60 | mud stone, plaster stone , salt rock , soft shale , cotton rock |
542 | 0.4~0.8 | 100~60 | Medium soft shale , medium cotton rock , medium-soft sandstone |
612 | 0.5~0.9 | 100~60 | argillite, limestone, sandstone, dolomite |
732 | 0.6~1.1 | 90~50 | argillite, firm limestone, sandstone , siltstone, basalt , silexite, granite, quartzose sandstone, firm dolomite , firm limestone , pyrite |
