World’s First Australian Commonwealth 12/D3 - D4 precision replacement main bearing by Artisan Fidelity. Proprietary engineered CNC machined, increased diameter shaft bore, diamond lapidary paste polished hardened steel journal, Austenitic stress relieved primary stainless steel housing, Swiss laboratory grade Sapphire (spherical tolerances less than a micron with typically < 10 micron wall tolerances) hydrodynamic oil bearing and advanced self-lubricating Polyamide thermoplastic thrust pad and individually custom made ultra low friction, self-lubricating advanced Polyamide based sleeve bushings.

Features:

• Precise High Tolerance Part Fitment CMM Certified

• Lower Mechanical Noise Floor

• Ultra Low Friction, Self-Lubricating Polyamide Bearing Design

• Increased Resolution and Detail

• Drastically Reduced Friction on Axial and Lateral Planes

• Increased Captive Bore Design

• Improved Right Channel /Left Channel Separation

• Superior Vertical Stability

• Weight - 3 lbs. 2 oz. / ~ 1.4kgs.

• Factory Retrofit Part (Note: Each bearing spindle taper custom machined to fit factory production Commonwealth 12/D3 - D4 main platter.)