Drilling Roller Bit Harder Formation Bore Piling

• Customization: Available
• After-sales Service: Video Service
• Warranty: 12 Months
• Certification: CE, ISO9001: 2000
• Condition: New
• Material: Q550
• Transport Package: Wooden Case
• Specification: 8 1/2"
• Trademark: EVER STAR
• Origin: China
• HS Code: 8420990000
• Production Capacity: 3000 PCS Per Month

Product Description

Product Description

Drilling Roller Bit for Core Barrel Suitable for harder formation bore piling

Advantages:
1. 55pcs Conical-ball carbide bits.
2. Diameter of carbide bit: 14mm.
3.Full cover with carbide cones.
4.High working efficiency.
5. Bearing encapsulation hole is bolted encapsulation, even if the solder joint is worn off, the circlipspring in the bearing will not be broken and will not affect the bearing, can continue to use afterspot welding.
6. The problem of oil leakage from oil sac end hole was solved
 

Model		8 1/2'' IADC637		8 1/2'' IADC637		8 1/2'' IADC637
Cone Size		133mm		133mm		133mm
Bearing Type		Sealed Journal Bearing		Sealed Journal Bearing		Sealed Journal Bearing
Inserts/Teeth Shape		Conical-ball		Conical-ball		Conical-ball
Inserts/Teeth		49*14mm		49*14mm		Cone1 49*13mm Cone2 50*13mm Cone3 45*13mm
Cone Material		15MnNi4Mo		15MnNi4Mo		15MnNi4Mo
Arm Material		20CrNiMo		20CrNiMo		15CrNiMo

Parameters:

Part No.	Description	Standard Pin Size (API REG)
5 1/2",5 7/8", 6 1/2"	Roller Bit	3 1/2"
8 1/2"	Roller Bit	4 1/2"
12 1/4", 12 1/2"	Roller Bit	6 5/8"
17 1/2"	Roller Bit	7 5/8"

PACKING

FAQ
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.

3. What warranty do we provide?
Ans.: We provide 6 months warranty time. 
4. What is the lead time?
Ans.: Usually the lead time is 7-10 days after receipt of your payment.
5.What payment terms do we accept?
Ans.: We accept T/T in advance or L/C at sight.

 

About Us

    Xuzhou Hengxing Jinqiao Machinery Technology Co., Ltd covers an area of more than 50 acres and with factory area about 20000 square meter.We are the professional construction machinery manufacture for rotary drilling rig kelly bar, highway guardrail pile driver and PV post driver, with our own R&D and sales team.

 

    Over the years we keep strengthening our independent research and development ability,meanwhile we actively join the China Construction Machinery Association to learn the latest news of this industrial. Also we continue to strengthen our cooperation relationship with China University of Mining and Technology and pursue of development and innovation of our techniques.

 

    We have passed the international Quality Certification of ISO9001:2008,our engineers are skilled in using AUTO-CAD,PRO-E and UG to design products, for the development of new products, they strictly implement the APQP&PPAP program. We provide customized services and all products meet the ISO9001 standard,also we have filed many patents.

 

    Our main product kelly bar absorbs a number of advanced technology from home and abroad , with special advantages of high wear resistance and high torque, now we are the nominated supplier of kelly bar for rotary drilling rig manufactures from both home and abroad, such as B AUER, SOILMEC, CMV, MAIT, IMT, ZOOMLION,CSR etc., in addition, our kelly bar enjoys a good market among the end-user customers for construction work such as high-speed railway, highway,urban viaduct,light rail,bridge,high-rise buildings and so on. We have enjoyed a good reputation among customers for many years based on our reliable
quality and perfect services.Other products include the multifunctional exchange highway guardrail post driver and the multifunctional hydraulic crawler PV post driver. Now our post driver has been widely used in construction fields such as highwayguardrail install, PV power station install, farm and orchard construction.
we has always followed our survival principle that "strives for the survival by quality, development through reputation", and our service tenet "your demand is our demand". Through continuous technological innovation we try to build our global brand.

    With our high quality products, perfect services and good reputation,we are willing to cooperate with customers and create a better future together! Welcome every friend to visit our factory!