FLRT Bit
| Supply Ability | 300pcs per quarter |
| Delivery Time | 5~45 workdays |
| Packaging Details | plywood box / iron box |
| Bearing Type | Sealed Roller Bearing |
| Cutting Material | TCI |
| Standard | API-7-1, ISO 9001:2008 |
| Series | FG |
| IADC | 435 |
| Supplementary Features 1 | G : Reinforced Gauge Protection |
| Supplementary Features 2 | T : Trimming Cutter |
| Brand Name | FLRT |
| Model Number | 13 3/4" FSA437G |
| Certification | API-7-1, ISO 9001:2008 |
| Place of Origin | China |
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Product Specification
| Supply Ability | 300pcs per quarter | Delivery Time | 5~45 workdays |
| Packaging Details | plywood box / iron box | Bearing Type | Sealed Roller Bearing |
| Cutting Material | TCI | Standard | API-7-1, ISO 9001:2008 |
| Series | FG | IADC | 435 |
| Supplementary Features 1 | G : Reinforced Gauge Protection | Supplementary Features 2 | T : Trimming Cutter |
| Brand Name | FLRT | Model Number | 13 3/4" FSA437G |
| Certification | API-7-1, ISO 9001:2008 | Place of Origin | China |
| High Light | tci drill bit ，milled tooth drill bit | ||
13 3/4" FSA437G , TCI Bit , Sealed Journal Bearing with Gauge Protection , Tricone Roller Bit , Tricone Drill Bit
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
| Types & IADC Code | 417 |
437 447 |
517 527 |
537 547 |
617 627 |
637 | |
| WOB | KN/mm(Bit Dia.) | 0.4~0.9 | 0.4~0.9 | 0.35~1.0 | 0.5~1.0 | 0.6~1.1 | 0.7~1.2 |
| Lb/in. (Bit Dia.) | 2285~5142 | 2285~5142 | 2000~5714 | 2857~5714 | 3428~6285 | 4000~6857 | |
| Rotation Speed (Rpm) | 140~60 | 140~60 | 125~50 | 110~50 | 100~40 | 80~40 | |
The above chart represents commonly available sizes and types, we do produce other sizes and types of rock bits which do not appear on this list. Please contact us for more information.
Design of journal bearings
Journal bearings must provide a balanced bearing geometry and adequate journal strength and must maximize the thickness of the high-pressure lubricating film developed during hydrodynamic lubrication. The thickness of lubricating films is affected by:
- Surface areas
- Journal and cone diameters
- Clearances between journal and cone
Manufacturing tolerances must be precise so that surfaces run true. Roundness of journal and cone surfaces is important, and if any part of a bearing is out of round, the effectiveness of the lubrication regime will be adversely affected.
The metallurgy of a bearing must be balanced to minimize heat generation during boundary lubrication. Cone-bearing surfaces are steel. Soft, silver-plated sleeves are installed on the journal. Silver polishes easily, and minor surface irregularities from machining are quickly smoothed. This smoothness ensures low-friction operation and uniform lubricant flow over the bearing surface
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Year Established:
1992
Total Annual:
10000000-13000000
Employee Number:
150~200
Ecer Certification：
Site Member
Hejian City Feilong Retop Rock Bit Manufacture Co., Ltd. is established in 1992 and located in Hebei Province, China. Integrated with Beijing Feilong International Trade Co., Ltd. and Beijing Superior Drilling Equipment Co., Ltd. , the company has involved into a comprehensive enterprise integrating... Hejian City Feilong Retop Rock Bit Manufacture Co., Ltd. is established in 1992 and located in Hebei Province, China. Integrated with Beijing Feilong International Trade Co., Ltd. and Beijing Superior Drilling Equipment Co., Ltd. , the company has involved into a comprehensive enterprise integrating...
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