JA Michell Inverted Oil-Pumping Main Bearing Only

This upgrade is for earlier acrylic platter-equipped GyroDecs. All Michell turntables currently employ a unique inverted bearing that locates the point of rotation above the center of gravity of the platter, and exactly at the height where the platter takes up the drive belt. This makes the platter/bearing a self-stabilizing component that can not be provoked into rocking modes. The precision bearing has a case-hardened steel shaft that is secured upright in an oil well, which is threaded into the subchassis from below. A massive bronze housing, precision-machined as a pair with the shaft, is attached to the platter via the integral stainless steel record spindle A thrust ball sits on the flat top of the shaft centralized by an inverted cone in the top of the housing. This housing has a spiral machined into its inner bore to draw a high quality synthetic oil from the bath to the top of the bearing shaft as the housing rotates with the platter.