API 8 1/2′′ Tricone Drill Bit/ Nail Drill Bits/Steel Tooth Tricone Bit

• Type: Core Drill
• Usage: Metal Drilling, Masonry Drilling, Well Drilling, Wood Drilling
• Certification: API
• Name: Tricone Drill Bit
• China: China Tricone Drill Bit
• China Bit: China TCI Tricone Bit
• Model NO.: ROS 8 1/2′′
• Bit: China Roller Cone Bit
• Supplier: China Bit Supplier
• Drilling: Tricone Drill Bit Wiki
• Manufacturers: Tricone Rock Roller Bits Manufacturers
• Drill Bits: China Tricone Roller Cone Drill Bits
• Rock Bits: China Tricone Rock Bits
• New: 2017 Tricone Bits Manufacturing
• Transport Package: Wooden Box
• Specification: 8 1/2′′
• Trademark: ROSCHEN
• Origin: China
• HS Code: 843143210
• Production Capacity: 2600

Product Description

TCI Bit/Roller Roller Bit/Cone Drill Bit/water/oil well drilling,sealed metal bearing

1) Main Features
 
1. Cutting Structure
The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.
 
2. Gauge Structure
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
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
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.
 
2) Avaliable models
 

Model	116 117 12 6127 136 137 216 217 226 226 316 317 326 327 336 337  115 125 135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347
IADC CODE	417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445  525 625 635 416 427 436 446 447 516 526  537 547 516 536  535
Available sizes:	From 3 3/4'' to 26"
	larger sizes for hole opener bit ,reamer bit
	or tell me what you want, i will try to help you
Advantage	favourable price and good qualtity
Bearing type:	sealed bearing and non-sealed bearing
	HJ(metal sealed journal bearing)
	HA (rubber sealed journal bearing)
Formation or layer	soft ,medium soft ,hard,medium hard,very hard formation
Application	petroleum&gas ,water well ,mining and tectonic industries ,oil field,  construction, geothermal, directional boring, and underground foundation work
	if you have any question,pls feel free to contact with me

NO.	TRICONE ROCK BIT SIZE		REG.PIN API
	in	mm
1	3 3/4	95.3	2 3/8
2	3 7/8	98.4	2 3/8
3	4 1/8	104.8	2 3/8
4	4 1/4	108	2 3/8
5	4 1/2	114.3	2 3/8
6	4 5/8	117.5	2 7/8
7	4 3/4	120.7	2 7/8
8	4 7/8	123.8	2 7/8
9	5 1/2	139.7	3 1/2
10	5 5/8	142.9	3 1/2
11	5 2/3	143.9	3 1/2
12	4 3/4	146.1	3 1/2
13	5 7/8	149.2	3 1/2
14	6	152.4	3 1/2
15	6 1/8	155.6	3 1/2
16	6 1/4	158.8	3 1/2
17	6 1/2	165.1	3 1/2
18	6 5/8	168.3	3 1/2
19	6 3/4	171.5	3 1/2
20	7 1/2	190.5	4 1/2
21	7 5/8	193.7	4 1/2
22	7 7/8	200	4 1/2
23	8 3/8	212.7	4 1/2
24	8 1/2	215.9	4 1/2
25	8 5/8	219.1	4 1/2
26	8 3/4	222.3	4 1/2
27	9 1/2	241.3	6 5/8
28	9 5/8	244.5	6 5/8
29	9 7/8	250.8	6 5/8
30	10 1/2	266.7	6 5/8
31	10 5/8	269.9	6 5/8
32	11	279.4	6 5/8
33	11 5/8	295.3	6 5/8
34	12	304.8	6 5/8
35	12 1/4	311.2	6 5/8
36	12  5/16	312.7	6 5/8
37	13 3/8	314.3	6 5/8
38	12  7/16	315.9	6 5/8
39	12 5/8	320.7	6 5/8
40	13 1/8	333.4	6 5/8
41	13 1/2	342.9	6 5/8
42	13 5/8	346.1	6 5/8
43	13 3/4	349.3	6 5/8
44	14 1/2	368.3	7 5/8
45	14 3/4	374.7	7 5/8
46	15 1/2	393.7	7 5/8
47	16	406.4	7 5/8
48	17 1/2	444.5	7 5/8
49	18 7/8	479.4	7 5/8
50	20	508	7 5/8
51	22	558.8	7 5/8
52	24	609.6	7 5/8
53	26	660.4	7 5/8
54	28	711.2	7 5/8
55	30	762	7 5/8

3)Photos of Products Details










5. we can provide more size 
 

Steel tooth (IADC)	111, 121,131
	117,124,126,127,136,137
	211,311
	216,217, 227...
TCI (IADC)	415,435, 417,437
	515,525,535,545, 517,527,537,547
	615,625,635,,617,627,637,737
	512,522,532,612,622,632,732...

FAQ


Q: Are you a manufacturer or trading company?
A: We are a specialized manufacturer.

Q: How about the delivery terms?
1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air, sea, train.

Q: How about discount?
A: Price is based on products and order quantity.

Q: Do you accept sample order?
A: Yes sure, please contact us for details.

Q: How about your after-sales service?
A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.

Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our products, Roschen always makes a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001:2000 in 2004.
 




For more information please contact:


 
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
  
 
 
Website: http://roschen.en.made-in-china.com 

 ; http://roschen.en.made-in-china.com 
http://roschen.en.made-in-china.com