● Adopted cutting edge shape to improve the chipping resistance of cutting edge.
● When peripheral cutting edge makes contact with cutting surface, vibration occurs by an increase in cutting resistance and it affects tool life and cutting surface quality. The influence can be reduced by adoption of the strong back taper shape.

● Added longer effective length type to SSPB220 series.
● Realized deeper milling by adoption of spiral ball shape and strong back taper shape to improve both sharpness and the chipping resistance of cutting edges.

● To realize more rigid, CBN long neck ball end mill with taper neck are adopted.
● Both efficiency and accuracy are increasing by taper neck design and spiral ball shape with improved sharpness in finish processing on deep milling.

● This CBN Ball End Mill has realized both advantages of CBN and Carbide.
● Depth of Cut can be increased at the equivalent level to Carbide.
● Unique flute design with R-accuracy ±0.005 prevents chipping!
● Flute is smoothly tangent from straight line to R-curve.
● Applicable for hardened materials up to 68HRC!
● We recommend using oil mist coolant.

● Lineup of CBN tool with long neck applicable to deep milling, available 25 sizes in total.
● Enables milling more deeply by long effective length up to 10mm comparing with conventionalCBN tools.
● Enables wider application for milling by long neck in addition to long life and accurate finishing.
● Standardized in R0.05 at smallest.
● Unique flute design with R-accuracy ±0.005 prevents chipping!
● We recommend using oil mist coolant.

● Sharpened edge at R-center improves shearing ability.
● Continuous 10 hours machining on hardened steel of 60HRC.
● Long-lasting high surface accuracy Rz1.0μm.
● Save significant time at polishing process.
● We recommend using oil mist coolant.

● The world’s first CBN Micro Ball End Mill.
● CBN Micro Ball develops new machining capability in high-precision technology.
● Standarized sizes from R0.01.
● Realized sharp edge by maximizing features of CBN.
● Long machining on pre-hardened to high-hardened steels (60HRC～).