Rock Button Drill Bit

Place of Origin China
Brand Name Hainaisen
Certification ISO 9001
Model Number 8-1/2HS6523DA
Minimum Order Quantity 5 pieces
Price To be negotiable
Packaging Details iron case
Delivery Time 5-7 business days
Payment Terms T/T, L/C
Supply Ability 20pcs per day

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Product Details
Size 8-1/2 Inch (Φ215.9mm) Use Oil&Gas
Body Type Steel Body Condition New
Market Global Video Outgoing-Inspection Provided
Showroom Location Xi'an, China Machinery Test Report Provided
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Product Description

8-1/2 Inch 5 Blades Steel Body PDC Drilling Bit Oil Gas Rock Bits



1. The crown surface of the drill bit is the middle casting surface. It can increase the arc length in heavily worn locations to insert more PDC cutters for better wear resistance.
2. The taper surface is shallow, so the drill has good directionality, good cleaning effect and strong aggressiveness.
3. The center-to-center distance of the drill head is large, so that the crown of the drill head has a larger impact resistance area.
4. The PDC tool angle is 16-26°, which makes the drill bit have higher cutting performance and impact resistance.

5. On the shoulder part of the bit,it is welded by double-row PDC cutters so that they can drill and abrase simultaneously and complement each other and work together. They undetake respectively the cutting task so that the bits can drill in a high speed.
6. The long gauge surface is welded by double-row PDC cutter gauge teeth so that the bit has higher abrasion resistance and better protecting gauge effect.Meanwhile, the PDC cutters can be effectively used to improve the bit's stability during the drilling.


Size 8-1/2 inch (Φ215.9mm)
Model number 8-1/2HS6523DA
Body type High Manganese Steel
Number of blade 5
Primary PDC cutter size 1613
Number of nozzle 5
Diameter of nozzle 16mm
Gauge length 68mm
API connection API 4-1/2 REG
Make-Up Torque(KN.m) 16.3~21.7(4.79)KN·m(Mpa)
Suitable formation Abrasive formation
Weight On Bit(WOB) 4-16 T
Rotary Speed(RPM) 60-240r/min
Application Oil & Nature Gas
Quality High Level
Package Iron Case
MOQ 5 Pieces
Certificate ISO 9001
Customized Size Yes


Rock Button Drill Bit 0

Rock Button Drill Bit 1



Our drill bits will be shipped out within 7 days after the 50%/full payment is confirmed.

We ship the bits by sea, by air. Or if you have any other demands, please feel free to let us know.


Rock Button Drill Bit 2


Our Principle

We are insisting in the principle of high quality, superior service and the courage to innovate. We are also adhering to providing the efficient products and excellent services. If you are interested in our drill bits, please feel free to contact us. We are looking forward to cooperating with you!



1. Are you a trading company or manufacturer?

We have been a professional manufacturer of PDC bits since 2013.


2. Whether accept customized according to clients' requirements?

Yes, We accept customized products, no matter what size and what type. Please feel free to contact us.


3. About lead time and shipping time?

The lead time depends on the quantity of the order. Usually, it will take 3-5 days to ship to Tianjin Port or XI'AN Airport, China. For the small order or urgent order, we can send you by air once the order is confirmed.


4. Is it produced according to the standard? And can I expect a quality product?

Yes, all our activities are accredited to ISO9001: 2015, both in products and services. At the same time, mature production technology will ensure the quality to satisfy the international request. We have strictly inspection in the production. Our bits are exported to the Middle East, Europe, North America, South America, Australia, and other countries and regions.


5. How do you guarantee your quality?

We select the advanced production technology and equipment, strictly control the whole production process, and inspect the finished drill bits. We can also make several design changes according to the customer's feedback, and finally ensure the customer's excellent drilling effect.


6. What is your payment terms?
Our payment terms: T/T (normally 30% deposit ,balance 70% before shippment )
or LC at sight.


If you have any questions, please feel free to contact us. No matter how far away we are, communication is no boundaries.