Dry Drilling Diamond Core Drill Bit for Concrete Stone Brick

Products Description

Can be used for drilling granite, marble, quartz, concrete, ceremic and others. 

Recommend Equipment:  Makita angle grinder, RPM around 7000. 
Drilling Speed:
Hard granite 2.5cm 20-30s/hole;        
Medium granite 3cm  15-25s/hole
Soft granite 1.5cm  12-30s/hole

Precautions for using:
(1) Shake the angle grinder and press down evenly
(2) If to drill more than 4 holes continuously, use a cup of water to cool the drill and grinder down.
(3) Drill hard, medium, soft granite alternately, if feel hard to drill, turn to a soft stone to sharp the segments. 

Technical Parameter

Dia/mm	Length	Connector	Thicknes /mm	Size of segments	No. of segments
25	450	1-1/4	2.0	12*3.5*10	4
28	450	1-1/4	2.0	12*3.5*10	4
32	450	1-1/4	2.0	20*3.5*10	3
35	450	1-1/4	2.0	20*3.5*10	4
38	450	1-1/4	2.0	20*3.5*10	4
42	450	1-1/4	2.0	20*3.5*10	4
47	450	1-1/4	2.0	24*3.5*10	4
52	450	1-1/4	2.0	24*3.5*10	5
57	450	1-1/4	2.0	24*3.5*10	5
62	450	1-1/4	2.0	24*3.5*10	6
67	450	1-1/4	2.0	24*3.5*10	6
72	450	1-1/4	2.0	24*3.5*10	7
77	450	1-1/4	2.0	24*3.5*10	7
82	450	1-1/4	2.0	24*3.5*10	8
92	450	1-1/4	2.0	24*3.5*10	8
102	450	1-1/4	2.0	24*3.5*10	9
107	450	1-1/4	2.0	24*3.5*10	9
112	450	1-1/4	2.0	24*3.5*10	10
117	450	1-1/4	2.0	24*3.5*10	10
122	450	1-1/4	2.0	24*3.5*10	10
127	450	1-1/4	2.0	24*3.5*10	10
132	450	1-1/4	2.0	24*3.5*10	11
142	450	1-1/4	2.0	24*3.5*10	11
152	450	1-1/4	2.5	24*4.0*10	12
162	450	1-1/4	2.5	24*4.0*10	12
172	450	1-1/4	2.5	24*4.0*10	13
182	450	1-1/4	2.5	24*4.0*10	13
200	450	1-1/4	2.5	24*4.0*10	15
225	450	1-1/4	2.5	24*4.0*10	16
250	450	1-1/4	2.5	24*4.0*10	17
300	450	1-1/4	3.0	24*4.5*10	21
350	450	1-1/4	3.0	24*4.5*10	23
400	450	1-1/4	3.0	24*4.5*10	25

 

Products Details
Beside normal teeth, the shark teeth, Turbo teeth, x-rooftop teeth are also available.


Shipping

Transport ways choose:
a. For urgent order with less weight or samples, we recommend express service.

b. For normal (regular) orders which weight over 45kgs, we recommend Air Cargo.

c. For big dimensional goods or heavy weight cargo, we recommend Sea Cargo.

Customers Distrubution & Exhibition


 

FAQ:
Q1:Are you a factory or trading company?
A1:We are factory. If you have time, welcome to visit our factory.

Q2. How is your quality?
A2. We have a very seriously control system. We guarantee the high performance of our products.

Q3. If we need technical support, can you offer us?
A3. Yes, we have an experienced team, offering our customers additional benefits with specific advice, by our product management staff, engineers and technicians.

Q4. How can we be your agent in our country?
A4. Please inform us your detailed company, we will discuss and propose helpful suggestion for you, and to find the best solution for you.

Q5. Do you offer free samples?
A5. Normally we do not offer free samples, but we could properly adjust according to detailed requirement.

Q6. Is there cheap shipping cost to import to our country?
A6. For small order, express will be the best choice; for bulk order, sea way is best but take longer time; for urgent orders, we suggest shipment by air or by express.

Q7. When you can reply to me when I send you an Inquiry?
A7. We promise to reply within 24 hours on receipt of your inquiry on working days.

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