Deep Groove Ball Bearings Single Row, EAN: 7316570235012, Inner (d) MM: 85, Outer (D) MM: 18, Width (B) MM: 41, C – Cylindrical Bore, ZZ/2Z – Steel Seal on Two Sides, S – Steel or Standard Cage, No External Modification, Cn Normal Internal Play. SKF 66317-2Z is a deep groove ball bearing which is suitable for applications that require high accuracy and low noise. It is designed for use in high speed, high precision and high load applications such as electric motors, pumps, compressors, and gearboxes. This bearing is available to purchase at PLC2Day and can be used in a variety of industrial applications.