Self-Aligning Ball Bearing, Bearing Industry Number 2205, Bore Diameter 25 mm, Outside Diameter 52 mm, Outer Ring Width 18 mm, Ring Material Alloy Steel, Bore Type Cylindrical, Closure Double Sealed, Cage Material , System of Measurement Metric, ABEC Rating 1, Ball Material Alloy Steel, Ball Material Grade 100Cr6, Dynamic Radial Load Capacity 12,300 N, Lubricant Material Grease, Maximum Speed 8,100 RPM, Maximum Temperature 100 Degrees C, Minimum Temperature -20 Degrees C