Spherical Roller Bearing Bearing Industry Number 23028 Bore Diameter 140 mm Bore Type Cylindrical Cage Material Steel Closure Open For Environment Highly Dusty and Dirty Chemical Harsh Extreme High Temperature Maximum Speed 2 100 RPM Grease 2 700 RPM Oil Maximum Temperature 400 Degrees F Minimum Temperature -40 Degrees F Outside Diameter 210 mm Overall Width 53 mm Ring Material Alloy Steel Roller Material Alloy Steel Seal Type Not Applicable System of Measurement Metric