8 1/2″ IADC637 Single Roller Cone/Piling Drilling barrel core bit
Short Description:
Product Description
Tech Data of YINHAI Single Roller Cone
YINHAI Sample Show — 50 Inserts Teeth
YINHAI Factory Supplies Single Cutters
Hot commodity 8.5-inch tricone bits single cones/rotary drilling tools/core baller by YINHAI manufacturer
The single roller cone is the main part of the tri-cone bit. A drill rock bit is made up of three single roller cone bits and welded together. The upper part has connecting thread to connect with the drilling tool, and the lower part is made into a journal with a certain inclination angle to form a auxiliary bearing with the inner hole of the cone. There is a water hole channel on the bit’s leg/arm, which can be installed with oil storage pressure compensation device. The journal needs high wear resistance and hardness to bear load, and enough strength and impact toughness are required inside the matrix.
| Recommended Drilling Parameters | |||
| IADC | WOB(kn/mm) | RPM(r/min) | Formations |
| 117 | 0.30-0.753 | 180-60 | very soft formation with low compressive strenght and high drillability,such as caly,mudstone,chalk,etc. |
| 127 | 0.30-0.85 | 180-60 | soft formation with low compressive strength and high drillability,such as mudstone,gypsum,soft limestone,etc. |
| 217 | 0.35-0.95 | 150-60 | soft to medium hard formations with high compressive strength,such as medium soft shale,sandstone,limestone,etc. |
| 437 | 0.35-0.9 | 240-70 | soft formation with low compressive strenght and high drillability,such as caly,mudstone,chalk,soft limestone,etc. |
| 517 | 0.35-1.0 | 140-60 | medium soft formation with low compressive strength and high drillability,such as mudstone,sandstone,shale,etc. |
| 537 | 0.45-1.0 | 120-50 | medium soft to medium hard formation with low compressive strength,such as medium shale,sandstone,medium limestone,etc. |
| 617 | 0.45-1.1 | 90-50 | medium hard to hard formation witj high compressive strength,such as hard shale,limestone,dolomite,etc. |
| 637 | 0.5-1.2 | 80-40 | hard to very hard formation with high compressive strength,such as hard limestone,dolomite,marble,etc. |
| NOTE the upper limits of WOB and RPM in above table should not be used simultaneously | |||
FAQ:
1.Q:Is your company a distributor or a manufacturer?
A: Manufacturer,We are a 100% real factory of Rock Drill Bits, with 12 years’ experience. And We have passed the factory audit by SGS. https://yinhaibits.en.made-in-china.com/
2.Q:How about your products?
A : Both standardized tricone bits and PDC bits produced strictly according to API and rock bits-customizing used in various construction works are provided.
3.Q:What kind of packing do you have?
A: Ply Wooden boxes (free of fumigation); Packing can be customized.
4.Q:What is your price advantage?
A:We are 100% factory directly sales,API production process guarantee,Provide customized services for brand processing.
Reduce the cost of drilling for you, worry free after-sales service. Welcome to book a video-call to inspect our factory.
5.Q:What is the minimum order quantity for your factory?
A:It all depends.generally 1-5 pcs.
6.Q:What is the website about your factory?
A:yinhaibits.en.made-in-china.com
