Solid Carbide 3 Flute Drill Bits for cast iron and aluminum alloy machining-Changzhou Maiteng Tools Co.,Ltd.

• Suitable for drilling solid workpieces such as cast iron and aluminum alloys.
• The three-edge structure allows high feed rates and centering capabilities.
• High processing reliability, suitable for harsh working conditions such as intermittent cutting.
• Externally cooled straight shank three-edge drill.

NNZL Series Non Coated Three Blade Drill (External Cooling Type)（3D）

Processed Materials	Cast Iron		Nodular Cast Iron		Silicon Aluminum Alloy				Aluminum Alloy		Heat-Resisting Alloy
Processed Materials	Cast Iron		Nodular Cast Iron		Si≤10%		Si>10%		Aluminum Alloy		Heat-Resisting Alloy
Cutting Speed	50~100m/min		40~70m/min		80~160m/min		60~120m/min		100~180m/min		15-25m/min
Diameter (mm)	Rotational Speed (min^-1)	Feed Rate (mm/r)	Rotational Speed (min^-1)	Feed Rate (mm/r)	Rotational Speed (min^-1)	Feed Rate (mm/r)	Rotational Speed (min^-1)	Feed Rate (mm/r)	Rotational Speed (min^-1)	Feed Rate (mm/r)	Rotational Speed (min^-1)	Feed Rate (mm/r)
3	7400	0.09~0.12	5300	0.09~0.12	12700	0.07~0.16	10000	0.07~0.16	15000	0.07~0.16	2100	0.03~0.06
4	5600	0.10~0.15	4000	0.10~0.15	9600	0.09~0.18	8000	0.09~0.18	11000	0.09~0.18	1600	0.04~0.07
5	4500	0.12~0.18	3200	0.12~0.18	7600	0.10~0.22	6300	0.10~0.22	9000	0.10~0.22	1250	0.05~0.09
6	3700	0.14~0.20	2700	0.14~0.20	6400	0.12~0.25	5300	0.12~0.25	7400	0.12~0.25	1050	0.06~0.11
8	2800	0.16~0.24	2000	0.16~0.24	4800	0.14~0.28	4000	0.14~0.28	5600	0.14~0.28	800	0.08~0.14
10	2200	0.18~0.27	1600	0.18~0.27	3800	0.18~0.32	3200	0.18~0.32	4500	0.18~0.32	600	0.10~0.16
12	1900	0.20~0.30	1300	0.20~0.30	3200	0.22~0.36	2700	0.22~0.36	3700	0.22~0.36	500	0.12~0.18
14	1600	0.22~0.35	1100	0.22~0.35	2700	0.25~0.40	2300	0.25~0.40	3200	0.25~0.40	450	0.13~0.20
16	1400	0.25~0.36	1000	0.25~0.36	2400	0.27~0.44	2000	0.27~0.44	2800	0.27~0.44	400	0.14~0.23
18	1200	0.28~0.38	880	0.28~0.38	2100	0.32~0.48	1800	0.32~0.48	2500	0.32~0.48	350	0.15~0.25
20	1100	0.30~0.40	800	0.30~0.40	1900	0.36~0.54	1600	0.36~0.54	2300	0.36~0.54	320	0.16~0.28

NNZL Series Non Coated Three Blade Drill (Internal Cooling Type)（15D）

Processed Materials	Cast Iron		Nodular Cast Iron		Silicon Aluminum Alloy				Heat-Resisting Alloy
Processed Materials	Cast Iron		Nodular Cast Iron		Si≤10%		Si>10%		Heat-Resisting Alloy
Cutting Speed	60~120m/min		50~100m/min		100~200m/min		80~160m/min		120~220m/min
Diameter (mm)	Rotational Speed (min^-1)	Feed Rate (mm/r)	Rotational Speed (min^-1)	Feed Rate (mm/r)	Rotational Speed (min^-1)	Feed Rate (mm/r)	Rotational Speed (min^-1)	Feed Rate (mm/r)	Rotational Speed (min^-1)	Feed Rate (mm/r)
5	5700	0.08~0.14	4500	0.08~0.14	9000	0.09~0.18	7600	0.09~0.18	10000	0.09~0.18
6	4700	0.10~0.16	3700	0.10~0.16	7400	0.12~0.20	6400	0.12~0.20	8500	0.12~0.20
8	3600	0.12~0.20	2800	0.12~0.20	5500	0.12~0.24	4800	0.12~0.24	6400	0.12~0.24
10	2800	0.14~0.23	2200	0.14~0.23	4500	0.16~0.28	3800	0.16~0.28	5000	0.16~0.28
12	2400	0.16~0.26	1900	0.16~0.26	3700	0.18~0.32	3200	0.18~0.32	4200	0.18~0.32
14	2100	0.18~0.32	1600	0.18~0.32	3200	0.20~0.36	2700	0.20~0.36	3600	0.20~0.36

1. When using this tool for the first time, test cutting at 90% of the cutting speed or 85% of the feed rate according to the above data. When the cutting condition is stable, increase the cutting speed and feed rate one by one.
2. This standard cutting condition table is applicable to water-soluble cutting fluids.
3. When installing the cutting tool, please use a defect-free and clean chuck, and control the radial runout of the drill bit within 0.02mm.
4. The cutting conditions in this table are applicable to situations where the hole depth is below 3D/15D.

The NNZL 3-flute drill bit features an innovative three-flute geometry, offering superior stability and exceptional centering capability compared to conventional two-flute designs. The optimized cutting edge angle ensures smooth chip evacuation, reduces machining vibration, and enhances hole accuracy and surface finish. Combined with an external cooling system, it effectively dissipates heat, minimizing thermal buildup and extending tool life.

Made from high-quality solid carbide and precision-ground to exacting standards, the NNZL drill bit delivers exceptional wear resistance and stability in high-speed machining. The advanced surface treatment further reduces cutting resistance, increases efficiency, and ensures consistent performance in demanding production environments.

A comprehensive range of sizes is available, offering various diameters and lengths to accommodate different machining needs. The flexible specification options allow users to select the ideal sub-model for specific applications, ensuring precise and efficient drilling.

Suitable for machining cast iron, ductile iron, aluminum alloy, stainless steel, and heat-resistant alloys, the NNZL drill bit provides excellent adaptability and reliability, making it an optimal choice for precision manufacturing and high-volume production.

Changzhou Maiteng Tools Co.,Ltd.is located in the economically developed Yangtze River Delta region.The factory is located in XixiashuHigh-tech Development Zone,a well-known tool town in China.It is adjacent to S239 and Jiangyi Expressway in the east,25kilometers away from Changzhou North Station of the high-speed railway, and G42 Shanghai-Nanjing in the south.High-speed,8 kilometers away from Changzhou Benniu International Airport,the transportation is very convenient.
Magotantools take the ISO9001 quality system as the standard,under the guidanceof the business philosophy of"zero defect in products"and"zero distance in service",based on the spirit of"integrity","unity"and"exploita- tion",and follow a fair and just company style for management.Product production adopts five-axisand six-axis CNC grinding and machining centers from Germany,Switzerland,Japan,etc.,and is equipped with high-preci- sion testing equipment such as Germany,Japan,and China,so as to meet the needs of production with high quality and quantity.
The company's team consists of 2 professor-level senior engineers in China,and has more than ten experienced tool technology and R&D personnel.It has formed a long-term cooperation model with East China University of Science and Technology,and continuously develops various high-performance CNC tools,and has won various national awards.More than 10 patents,the company's products are mainly used in the defense industry, aerospace industry,automotive industry,electronic products and molds and other fields.
The company's various products are recognized and favored by well-known domestic companies.With infinite technology,infinite creation,and pursuit of excellence,Magotan tools will write future prosperity and dreams with more extraordinary confidence and high-quality quality.

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Solid Carbide 3 Flute Drill Bits for cast iron and aluminum alloy machining

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