Spherical Roller Bearing, Bearing Industry Number 22318, Bore Diameter 90 mm, Bore Type Cylindrical, Cage Material Steel, Closure Open, For Environment Highly Dusty and Dirty, Chemical, Harsh, Extreme High Temperature, Maximum Speed 2,500 RPM Grease, 3,000 RPM Oil, Maximum Temperature 400 Degrees F, Minimum Temperature -40 Degrees F, Outside Diameter 190 mm, Overall Width 64 mm, Ring Material Alloy Steel, Roller Material Alloy Steel, Seal Type Not Applicable, System of Measurement Metric