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Zhuzhou MMM New Material Co., Ltd.

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Solid Tungsten Carbide Drill Bits With Multi Series Selection For Drilling Holes

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Brand Name :	MMM
Model Number :	∅4 - ∅25
Certification :	ISO 9001
Price :	USD
Payment Terms :	L/C, T/T
Supply Ability :	5,000 PCS/Month
Delivery Time :	5-15 Days

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Solid Tungsten Carbide Drill Bits With Multi Series Selection For Drilling Holes

Solid Tungsten Carbide Drill Bits With Multi Series Selection for Drilling Holes

Feature Advantage:

3D, 5D, 8D, 12D, etc., all kinds of lengths are complete.
All types are available in both internal and external cooling to meet the requirements of various machine tools.
It includes general processing series, stainless steel special series, high temperature alloy special series, deep hole drilling series, etc. A variety of series options, can achieve efficient processing of steel, stainless steel, cast iron, aluminum alloy, high temperature alloy and other materials.
Optimized drill tip structure for better cutting performance and improved machining stability.
∅ 2 - ∅ 25 Diameter, complete types.
The coating combines excellent wear resistance and anti-blocking properties to improve edge stability.
The unique coating post-treatment technology effectively reduces the cutting force, making the chip removal smoother and safer.

Recommended Cutting Parameters:

Cutting parameters are recommended for water soluble cutting fluids.
Use a defect-free, clean chuck when installing the drill and control the drill runout to within 0.02 mm.
The recommended cutting parameters are for applications where the hole depth is below 5D.
The recommended cutting parameters are externally cooled drills, which can be increased by 10%-15% depending on the situation.

Material	Mild Steel, Carbon Steel, Alloy Steel <HRc 30		Pre-Hardened Steel <HRc 40		Stanless Steel
Speed m/min	60-120		40-70		25-40
Diameter mm	Rotating r/min	Feed mm/r	Rotating r/min	Feed mm/r	Rotating r/min	Feed mm/r
2	14000	0.06-0.08	9500	0.06-0.08	5500	0.02-0.05
3	9500	0.09-0.12	6300	0.09-0.12	3700	0.03-0.07
4	7000	0.10-0.15	4700	0.10-0.15	2700	0.04-0.08
5	5700	0.12-0.18	3800	0.12-0.18	2200	0.05-0.10
6	4700	0.14-0.20	3100	0.14-0.20	1850	0.06-0.12
8	3600	0.16-0.24	2400	0.16-0.24	1400	0.08-0.16
10	2800	0.18-0.27	1900	0.18-0.27	1100	0.10-0.18
12	2400	0.20-0.30	1600	0.20-0.30	930	0.12-0.20
14	2100	0.22-0.35	1400	0.22-0.35	800	0.13-0.22
16	1800	0.25-0.36	1200	0.25-0.36	700	0.14-0.25
18	1600	0.28-0.38	1100	0.28-0.38	620	0.15-0.28
20	1400	0.30-0.40	950	0.30-0.40	550	0.16-0.30
25	1500	0.32-0.42	900	0.32-0.42	700	0.17-0.32

Material	Cast Iron		Ductile Iron		Heat Resistant Alloy
Speed m/min	60-120		50-100		15-25
Diameter mm	Rotating r/min	Feed mm/r	Rotating r/min	Feed mm/r	Rotating r/min	Feed mm/r
2	14000	0.06-0.08	11000	0.06-0.08	3200	0.02-0.04
3	9500	0.09-0.12	7400	0.09-0.12	2100	0.03-0.06
4	7000	0.10-0.15	5600	0.10-0.15	1600	0.04-0.07
5	5700	0.12-0.18	4500	0.12-0.18	1250	0.05-0.09
6	4700	0.14-0.20	3700	0.14-0.20	1050	0.06-0.11
8	3600	0.16-0.24	2800	0.16-0.24	800	0.08-0.14
10	2800	0.18-0.27	2200	0.18-0.27	600	0.10-0.16
12	2400	0.20-0.30	1900	0.20-0.30	500	0.12-0.18
14	2100	0.22-0.35	1600	0.22-0.35	450	0.13-0.20
16	1800	0.25-0.36	1400	0.25-0.36	400	0.14-0.23
18	1600	0.28-0.38	1200	0.28-0.38	350	0.15-0.25
20	1400	0.30-0.40	1100	0.30-0.40	320	0.16-0.28
25	1500	0.32-0.42	1100	0.32-0.42	250	0.17-0.3

FAQ:
1. Where are your factory located?

Our factory located in zhuzhou city, hunan province.

2. What are your main products?
Our main products are carbide cutting tools, including end mill, face mill, drill bits etc.
3. What raw material you use?
We have rods with 3-4 types hardness, hrc45, hrc55, hrc60,hrc65.. Your work piece hardness decides what rods are suitable for.
4. Do you have grinding machine?
Yes, we have 8 Walter from Germany and professional engineers modeling cutters
5. How to ensure the quality?
We have precision detection machine, quality inspectors check cutters one by one.
6. How to deal with the cutters under verified?
These under verified cutters are all scraped.
7. I only have the drawings of work pieces? can you design cutters for me?
Yes, of course, show me work piece drawing, I will show you cutters’ drawing.

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