Extra long drill bit sets

There are several challenges related to deep hole twist drill :

1.How to cool and lubricate the cutting edge

 2.How to remove iron filings at a stable rate, 

3.How to ensure that the drill bit does not break, 

4.How to make the drill bit wear-resistant

 After a long time of hard work and testing, our deep hole drills have achieved great success. The quality is stable, and the tool runout  be controlled within 0.005mm.

The deep hole coated drills can be used in deep hole drilling, component material include: aluminum, steel, cast iron, copper, Brass, stainless steel etc. When we drill deep holes, heat dissipation and chip removal are the two main problems we have, so usually we have the pressure cooling system to solve the cooling and chip removal problems and improve the tool performance.

Generally speaking, carbide deep hole drills are equipped with internal cooling holes. The coolant oil has two functions, one is to cool down, because a lot of heat is generated during the processing process, and the other is to punch out the chips in the hole,In case the drill bit will be broken.

Royi CNC tool , we are a professional provider solutions for hole machine, both drilling and threading can be met by us.

Our solid carbide extra long drill special geometry advantages:

1.Double margin design, stability for deep hole drilling.

2.Fine polishing chip flute, excellent in chip removal, sufficient cooling.

3.Strong cutting edge,Improve process reliability

4. Dia.1mm  can be grinded up to 80D flute length.

Item	Flute dia mm	L1 mm	L2 flute length mm	L3 shank length mm	Shank Dia mm	L4overall length mm
1	3.00	92	97	36	6	140
2	3.50	127	133	36	6	174
3	4.00	127	133	36	6	174
4	4.50	161	169	36	6	208
5	4.80	161	169	36	6	208
6	5.00	161	169	36	6	208
7	5.80	195	204	36	6	242
8	6.00	195	204	36	6	242
9	6.10	217	228	36	8	268
10	6.50	217	228	36	8	268
11	6.80	217	228	36	8	268
12	7.00	217	228	36	8	268
13	7.40	244	256	36	8	294
14	7.50	244	256	36	8	294
15	8.00	244	256	36	8	294
16	8.30	273	287	40	10	330
17	8.50	273	287	40	10	330
18	9.00	273	287	40	10	330
19	9.80	305	320	40	10	364
20	10.00	305	320	40	10	364
21	10.20	335	352	45	12	401
22	11.00	335	352	45	12	401
23	11.50	360	370	45	12	415
24	11.80	364	370	45	12	415
25	12.00	364	370	45	12	415

Company profile:

 

Founded in 2014, the company is located in Changzhou City, china. It provides a customized solutions for hole processing services, integrated services of metal drilling and threading. The main featured products are solid carbide drills, solid carbide deep hole drills, and solid carbide drill with coolant through, solid carbide boring tools, solid carbide non-standard drill bits, and other solid carbide customized tools.

 

The company has a number of imported CNC grinding machines, including 6 sets Walter CNC grinding machines, and a number of high-precision imported tool testing equipment. The tool quality is trustworthy.

 

The company has a testing machine to test and upgrade drill preformance and life according to various working conditions.

 

After unremitting efforts, and stable technology, we now has a large number of customers, products are exported to Hong Kong, Turkey, India, Germany, etc., with a large number of distributors around the world. It is your best supplier of solid carbide drill bits.

 

 

FAQ:

1. Are you a manufacturer or trading company?

  Definitely we are a professional manufacturer of providing solutions for hole making machining, your best choice for hole drilling and threading making.

 

2. Do samples are available for testing quality?

       Tool quality and price are the foundation for cooperation, samples testing are fine by us. MOQ : 3pcs for each item.

 

3. Do you offer OEM/ODM service?

Yes,we offer OEM/ODM service.

 

4. How long do it take to deliver the products?

   Usually it gonna take 7-10days to deliver for customized tools and 3-7 days for Regular inventory.

 

5. What are your main featured products?

   Our main featured products:solid carbide drill, solid carbide drill with coolant through, solid carbide extra long drill for deep hole, solid carbide boring cutter, and customized tools.