Product Details:
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8 1/2"637 TCI tricone roller bit rock bit rotary tricone drill bits for mining water well construction
Product information
1.Applicable: water well , oil field , construction , geothermal , directional boring , underground foundation work
2.Sealed bearing structure : Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed. The advanced metal seal package will improve the reliability and durability of bearing seal.
3.package information
FAQ(Frequently Asked Questions)
1. How to order the products?
Answer:
Send the inquiry with detail item description or with Model number.
If there is no packing demand we take it as sea-way packing.
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
2. About lead time and shipping time?
Answer :
The lead time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement.
According the distance from china to your port, usually from China to European about 25 days. To West of American 20 days.
3.Can I expect a quality products?
Answer :
Yes. All our activities are accredited to ISO 9001:2008 and API, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.
Avaliable sizes
Size | Bit Type | |
inch | mm | |
6 | 152.4 | 517, 537,617, 637 |
6 1/2 | 165.1 | 517, 537 |
7 7/8 | 200.0 | 517,527,547,617,627,637 |
8 1/2 | 215.9 | 437,447,517,537,617,627,637 |
9 1/2 | 241.3 | 437,517,537,547,617 |
9 5/8 | 244.5 | 437,517, 537,547,617 |
9 7/8 | 250.8 | 437,517, 537,547,617 |
12 1/4 | 311.1 | 437,517, 537,547,617,627,637 |
17 1/2 | 444.5 | 517,537,617,627,637 |
24 | 609 | 417,517, 537,547,617,637 |
26 | 660 | 417,517, 537,547,617,637 |
Soft Formation TCI Tricone Bits
The 437 TCI bits are used to drill low compressive strength, very soft formations. TCI bits maximize the use of both conical and chisel tungsten carbide inserts of large diameters and high projection. This cutting structure design, combined with maximum cone offset, results in high bit penetration rates. The deep intermesh of cutter rows prevents bit bailing in sticky formations.
Medium Formation TCI Tricone Bits
The 517 features aggressive chisel tungsten carbide inserts on the heel rows and inner rows. This design provides a fast drilling rate and added cutting structure durability in medium-to-medium hard formation. The HSN rubber O-ring provides adequate sealing for bearing durability.
Hard Formation TCI Tricone Bits
The 637 bits can be used to drill hard and abrasive formation. Wear-resistant tungsten carbide inserts are used in the outer rows to prevent loss of bit gauge. Maximum numbers of hemispherical-shaped inserts are used in all rows to provide cutter durability and long life.
Medium-Hard Formation TCI Tricone Bits
The 617 features robust chisel tungsten carbide inserts on the heel row and conical on the inner rows. This design provides a fast drilling rate and added cutting structure durability in medium to medium hard formations. The HSN rubber O-ring provides adequate sealing for bearing durability.
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