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Convex (140°)、 (concave)
Parameters are also related to the extension length of the cutter
How to improve machining efficiency and tool life
Outer——±0
5 D6 25 150 4T 6R1 D6 15 50 4T 6R1 D6 18 75 4T 6R1 D6 20 100 4T 6R1 D6 25 150 4T 6R1
BB 100mm Length Coated Carbide Drill Machine Metal Hole Making Tool for Steel Stainless Steel(1.5~17.0mm) Aluminum Convex (140°)、 (concave)BB 100mm Length Carbide Drill Designed for Deep Hole Machining: Powerful Cutting Performance, Durable and Rigid. BB2055 Series: TiSiN Coating, Suitable for Mild Steel Material Hardness: HRC < 40 Point Angle: 120 BB2055 TiSiN HRC < 40 120 Brand Name(): BB Origin(): Mainland China() is_customized(): YES Model Number(): BB2055 DIY Supplies(DIY): Metalworking Type(): Twist Drill Bit() Use(): Metal Drilling() Dia. of Cut: 1. 5mm 17. 0mm TISIN Nano Coating
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