Ball Screw Support Bearing, Ball Material Alloy Steel, Bearing Industry Number 20X47, Bore Diameter 20 mm, Cage Material Nylon, Closure Open, Contact Angle 60 Degrees , Contact Bearing Type Angular Contact, Lubricant Material Oil, Matched Bearing Type Not Matched/Single Bearing, Maximum Temperature 120 Degrees C, Minimum Temperature -40 Degrees C, Number of Rows One, Outside Diameter 47 mm, Overall Width 15 mm, Ring Material Alloy Steel, System of Measurement Metric, ABEC Rating 7