TRB RC 4pcs 3x6x2.5mm MR63-ZZ/C Precision Ball Bearings Hybrid Ceramic Metal Shield

TRB RC 4pcs. 3x6x2.5mm Precision High Speed Ball Bearing, Ceramic Hybrid. Chrome Steel 52100 (GCr15) Races with Ceramic Si3N4 Balls, No Contact Metal Shield. Part SKU# TRB-MR63-ZZ/C Chromium Steel Races Ceramic Si3N4 Balls Low Torque Start Up Dimensions as follows: ID, OD, Width: 3x6x2.5mm This Bearing is Compatible with Part #: Align H1155 Blade - E-Flite EFLH1115 Losi LOSB1729, LOSB3008 The Characteristic of Ceramic Balls Compared with steel, ceramic materials are noted for their better or particular characters, such as wear-resistance, corrosion resistance, high temperature resistance, electrical insulation (except SiC), non-magnetic, high strength, high rigidity, and low specific gravity. These properties qualify them for replacing steel to make bearings serve in conditions of higher speed, harsh environment and less lube, and decrease wear, noise, vibration and maintenance time of bearings, and eventually increase performance, reliability and life of bearings. Ceramic materials, which can be used in making bearings, include mainly silicon nitride, ZrO2, alumina (Al2O3), and silicon carbide.