Straight Flute Drills for Cast Iron and Aluminum Alloy Machining-Changzhou Maiteng Tools Co.,Ltd.

• Suitable for short-chip materials such as cast iron, silicon aluminum alloy, etc.
• Excellent self-centering ability, can efficiently process and obtain workpieces with hole processing accuracy up to H7.
• The processed holes can achieve high positioning accuracy, straightness and surface finish.
• Internal/external cooling type straight shank straight groove drill.

NNZZ Series Straight Groove Drill (External Cooling Type)(5D)

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)
4	7000	0.10~0.15	5600	0.10~0.15	11000	0.12~0.20	9600	0.12~0.20	12000	0.12~0.20
5	5700	0.12~0.18	4500	0.12~0.18	9000	0.14~0.26	7600	0.14~0.26	10000	0.14~0.26
6	4700	0.14~0.20	3700	0.14~0.20	7400	0.16~0.28	6400	0.16~0.28	8500	0.16~0.28
8	3600	0.16~0.24	2800	0.16~0.24	5500	0.18~0.30	4800	0.18~0.30	6400	0.18~0.30
10	2800	0.18~0.27	2200	0.18~0.27	4500	0.20~0.32	3800	0.20~0.32	5000	0.20~0.32
12	2400	0.20~0.30	1900	0.20~0.30	3700	0.24~0.36	3200	0.24~0.36	4200	0.24~0.36
14	2100	0.22~0.35	1600	0.22~0.35	3200	0.28~0.44	2700	0.28~0.44	3600	0.28~0.44
16	1800	0.25~0.36	1400	0.25~0.36	2800	0.30~0.48	2400	0.30~0.48	3200	0.30~0.48
18	1600	0.28~0.38	1200	0.28~0.38	2500	0.34~0.52	2100	0.34~0.52	3000	0.34~0.52
20	1400	0.30~0.40	1100	0.30~0.40	2300	0.40~0.63	1900	0.40~0.63	2500	0.40~0.63

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 5D.

The NNZZ straight flute drill features a unique straight groove design, ensuring exceptional stability and efficient chip evacuation for demanding machining applications. This structure enhances tool rigidity, guaranteeing precise positioning during drilling while optimizing chip flow to reduce clogging risks. It is particularly suited for applications requiring high dimensional accuracy and superior surface quality.

Crafted from premium materials and manufactured with advanced precision grinding technology, the drill exhibits outstanding wear resistance and fracture toughness. Its high-precision design allows it to maintain stability at high rotational speeds, extending tool life, reducing replacement frequency, and enhancing overall machining efficiency.

NNZZ offers a variety of diameter and length combinations, providing flexible solutions for diverse machining needs. Whether for high-precision small-diameter drilling or high-efficiency large-diameter drilling, an appropriate model is available. Users can freely select according to their specific requirements, ensuring adaptability to different equipment and materials for optimal cost-effectiveness.

Designed for machining cast iron, ductile iron, aluminum alloys with varying silicon content, and general aluminum alloys, NNZZ drills deliver optimal performance across different materials. Recommended cutting speeds and feed rates are provided to ensure the best drilling results, whether for mass production or customized machining.

For optimal use, an initial trial cut at 85% of the recommended parameters is advised to ensure process stability before making final adjustments. To maintain drilling quality, machining should be conducted in a stable machine environment with a controlled radial runout of 0.02mm or less. Additionally, all parameters apply to hole depths not exceeding 5D for the best performance.

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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