pecification Rotation speed:MAX speed 40,000 rpm. Working air pressure:0.28-0.3Mpa Cooling water:Inner water spray Bearing:ZVO bearing available connection international E type connection Noise :less than 63 dB Packing:plactic box for unit packing ,10pcs for one carton Disinfection:autoclavoble to 135 ℃ Compatible model and brand NSK Tix-MAX Forward ≥18,000 min / rpm; Reversal≥ 17,000 min / rpm