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HKX835-311 Cylindrical Drill Bit
Applicable Model：
Producer：
Hunan
Is there any stock available：
According to customer's demand
Delivery Cycle：
According to customer's demand
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Changsha Heijingang Industrial Co., Ltd.
Hunan · ChangshaMain Products：Down-the-hole drilling tools, top hammer drilling tools, roller bit drilling tools
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Details Parameters
Details Introduction
规格: 12 1/4”(311mm) ModelType:121/4(311mm)
IADC编码: 835 IADC Code :835
Applications
Application for drilling in extremely hard formations with high compressive strength extremely hard and high abrasiveness, such as limestone, sandstone, dolomite, firestone, etc.,(Protodikonov's Hardness Coefficient of Rock f=18).
| 产品参数 | Parameters | ||
| IADC编码 | 835 | IADC CODE | 835 |
| 轴承结构 | 滚柱-滚珠-二道止推-滚柱-一道止推/密封，轴承面上镶有减磨合金。 | Bearing sfructure | Roller-Ball-Second Thrust-Roller-First Thrust/Sealing, abrasion-resistance carbide button insert on the bearing surface. |
| 循环方式 | 喷气式 | Circulation Type | Jet Air |
| 切削结构 | 内排齿：球形齿 外排齿：球形齿 背齿：平头齿 |
Cutting Structure | Inner Rows: Spherical Gage Rows: Spherical Gage Bevel Protection: Flat |
| 连接螺纹 | API 6 5/8”REG | Pin connection | API 6 5/8”REG |
| 喷嘴 | 直径24mm或26mm（3只）可拆下调换 | Nozzel | Ф24 or Ф26mm(3 pcs)Interchangeable |
| 钻头直径 | 311mm | Metric Bit Diameter | 311mm |
| 钻头重量 | 105 KG | Product Weight | 105 KG |
| 牙掌保护 Bit Legs Protection |
掌背镶嵌硬质合金齿，掌背掌尖均堆焊耐磨合金。 | Bit Legs Protection Carbide alloy button insert on the legs'surface, back and top space of legs build up welding of abrasion-resistant alloy. | |
| 操作建议 Operating Suggestions |
钻压：60000-95000 Lbs 转速：80-50 rpm 排碴风压：0.2~0.4Mpa |
Weight on Bit:60000-95000 Lbs Rotary Speed:80-50 rpm Air Pack Pressure: 0.2-0.4 Mpa |
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