2021 Good Quality Retractable Drill Bit - Rotary Bit for Blast Hole Drilling – TDS

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We consistently carry out our spirit of ''Innovation bringing development, Highly-quality ensuring subsistence, Management promoting benefit, Credit attracting customers for Two Stage Compression Air Compressor, Dth Hammer Drilling Factory, Integral Drill Steel, We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits.

2021 Good Quality Retractable Drill Bit - Rotary Bit for Blast Hole Drilling – TDS Detail:

The Drill Store takes advantages of the latest design technology and manufacturing processes for our roller cutters, wildly used for raise boring, shaft boring and reverse circulating drillings.

The cutters use roller-ball-roller bearing configurations. Premium ball, roller bearings and proprietary grease in creasebearing life and capacity, which leads to the greatly in creased serving life of the cutters. Our Metal face seals use proprietaryo- ring material. These Metal face seals have prove n to in crease bearing life versus our competitors in harsh environments and tough drilling conditions.

Avalibale IADC

Series	Application	Operating Parameters
Series	Application	Rotating Speed(RPM)	Weight on Bit-WOB(lb/in)
30	Very Soft	70-140	1000-4000
40	Soft	70-140	1000-4000
50	Soft to Medium	50-140	2000-5000
60	Medium to Hard	50-110	3000-6000
70	Hard	50-90	3500-7500
80	Extremely Hard	40-80	5000-8000

Available Sizes

Bit Size
in	mm	Pin Size
6 3/4	171	3 1/2
7 7/8	200	4 1/2
8 1/2	216
9	229
9 7/8	251	6 5/8
10 5/8	270
11	279
12 1/4	311
13 3/4	350

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Bear "Customer first, High quality first" in mind, we perform closely with our consumers and provide them with efficient and experienced services for 2021 Good Quality Retractable Drill Bit - Rotary Bit for Blast Hole Drilling – TDS , The product will supply to all over the world, such as: Washington, Zimbabwe, Netherlands, Providing the best products, the most perfect service with the most reasonable prices are our principles. We also welcome OEM and ODM orders.Dedicated to strict quality control and thoughtful customer service, we are always available to discuss your requirements and ensure full customer satisfaction. We sincerely welcome friends to come negotiate business and start cooperation.

Blast Hole Hammers