NB Spindle Units are precision manufactured to meet your most demanding specifications affording unparalleled consistency. NB’s uniquely precise shaft series [SPINDLE UNIT] is not only widely used in general industrial machines, it has improved the performance of semiconductor fabrication machines and and various special-purpose devices. 

For excellent wear resistance, NB uses high-carbon chromium bearing steel (SUJ2) and martensite stainless steel (SUS440C or equivalent). NB's advanced heat-treatment technology gives these materials an excellent wear resistance through quenching and tempering to achieve a uniform hardened layer in the circumferential and axial directions.