Hunan Tianying Drilling Machine Manufacturing Co., Ltd.
| Payment Terms | L/C, T/T |
| Supply Ability | 1000 SETS PER MONTH |
| Delivery Time | 35-45 WORKING DAYS |
| Packaging Details | wooden case |
| Material | High Manganese Steel and tungsten carbide |
| Size | 7 7/8 inch or 200mm |
| Formation | medium-Soft formations 1400-12000 PSI |
| Product Weight | 36kg |
| Thread type | API 4 1/2" REG |
| Weight on bit | 15750-39380 IBS |
| Rotary speed | 80-110 |
| Air back pressure | 0.2-0.4 MPA |
| Brand Name | Tianying |
| Model Number | IADC 535 7 7/8" |
| Certification | ISO9001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 1000 SETS PER MONTH |
| Delivery Time | 35-45 WORKING DAYS | Packaging Details | wooden case |
| Material | High Manganese Steel and tungsten carbide | Size | 7 7/8 inch or 200mm |
| Formation | medium-Soft formations 1400-12000 PSI | Product Weight | 36kg |
| Thread type | API 4 1/2" REG | Weight on bit | 15750-39380 IBS |
| Rotary speed | 80-110 | Air back pressure | 0.2-0.4 MPA |
| Brand Name | Tianying | Model Number | IADC 535 7 7/8" |
| Certification | ISO9001 | Place of Origin | CHINA |
| High Light | oilfield drill bit ， roller rock bits | ||
mining 3 cone rotary drill bit , Rotary Rock Bit API certifacation
Description of drill bit
(1) Cutting Structure of this series tricone rock bit :
The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit.
(2) Gauge Structure of this series tricone rock bit :
Multiple gauge protection with gauge trimmers on heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.
(3)Bearing Structure of this series tricone rock bit :
High precision bearing with two thrust faces. Balls lock the cone.Hardface heard bearing surface. Cone bearing inlaid with friction-reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed.
(4)Seal and Lubrication of this series tricone rock bit :
The advanced metal seal package consists of two metal seats and two elastic energizers. Compressed energizers ensure good contact being kept on two sealing surfaces of metal rings by elastic force, and achieve the bearing seal. In the drilling, metal seal are relatively dynamic, and the energizers are static. This will improve the reliability and durability of bearing seal. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.
Application
Tricone drill bit is one of the main tools for blast hole and well drilling, mainly used for large-scale open-pit mining, such as open-pit coal mines, iron mines, copper mines and molybdenum mines, also the non-metallic mines. With the increasing in variety of type, it’s also widely used in quarrying, foundation clearing, hydrogeological drilling, coring, tunneling in railway transportation department and shaft drilling in underground mines. The rock breakage by the tricone bit which used in mine is working with both the impact of teeth and the shear caused by slippage of the teeth, which bring high rock breaking efficiency and the low operation cost.
Common fault analysis of Tricone bitsCommon Fault Analysis of Tricone Bits.pdf
| Common fault | Fault description | Method |
| Early wear of the shirttail | Abrasive formations, bent drill rod, seriously worn stabilizer and insufficient air for drilling rate attained etc, are all the causes which result in premature shirttail wear. In this case, the configuration of cones is good and the amount of inserts wear is small. Shairttail wear can also allow the big roller bearings to fall out resulting in bit failure. | The designer should strength the shirttail with certain measures to increase the wear-resistance capacity of shirttails. |
| Early wear and loose movement of the bearing | Excessive weight on bit, insufficent air to clean the hole and/or cool the bearing, leads to bearings overheating due to improper cooling and poor cuttings removal can shorten the service life of bit bearing. | Reduce bit pressure and increase air pressure |
| Cutting structure failure | Excessive WOB or Rotation speed; Wrong bit selection; Cuttings blowing in bad conditions caused repeating crushing. | Correctly select operating parameters and rotary types for specific working conditions |
Tianying's Best Service
1. 365×24 Year-round Service,We are committed to year-round 24-hour service even during holidays.
2. Provide professional technical services, including products introduction, selecting and problem solution etc.
3. Within 35 Working Days Quick Delivery.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1958
Total Annual:
8000000-10000000
Employee Number:
100~200
Ecer Certification：
Site Member
Professional. Duarable, Efficient, TIANYING TCI Tricone Bit! Hunan Tianying Drilling Machine Manufacturing Co., Ltd.is one state-appointed factory of mining tools especially for tricone bit. we are established in 1958 and located at Zhuzhou city of Hunan provice. one fam... Professional. Duarable, Efficient, TIANYING TCI Tricone Bit! Hunan Tianying Drilling Machine Manufacturing Co., Ltd.is one state-appointed factory of mining tools especially for tricone bit. we are established in 1958 and located at Zhuzhou city of Hunan provice. one fam...
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