High-speed Dental Bearing 1 usable for dental handpieces 2 rotating speed 350.000-450.000rpm under air-pressure of 200-250Kpa High-speed Dental Bearing of super-high precision level P4 & P2 (ABEC 7 & ABEC9), usable for various brands of high-speed dental turbine handpieces High-speed Dental Bearing Dimension No.dDB13,175 mm6,350 mm2,380 mm23,175 mm6,350 mm2,779 mm33,175 mm7,938 mm3,571 mm Product ...