Spherical Roller Bearing, Bearing Industry Number 21310, Bore Diameter 50 mm, Bore Type Cylindrical, Cage Material Steel, Closure Open, Lubricant Material Grease, Maximum Speed 7,500 RPM Grease, Maximum Temperature 390 Degrees F, Minimum Temperature 0 Degrees F, Outside Diameter 110 mm, Overall Width 27 mm, Ring Material Alloy Steel, Roller Material Alloy Steel, Seal Type Not Applicable, System of Measurement Metric, Application Vibratory Applications, Wind Energy