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External Ring# 639R
For SAE Standard Bearings
Carbon Steel SAE 1060/1075, Plain
0.787 In. Shaft Diameter
20 mm Shaft Diameter
0.71 In. Inside Diameter
0.062 In. Wire Thickness
0.093 In. Section Width
Recommended Groove Size
0.731 In. Diameter
0.028 In. Depth
0.068 Width
For SAE Standard Bearings
Carbon Steel SAE 1060/1075, Plain
0.787 In. Shaft Diameter
20 mm Shaft Diameter
0.71 In. Inside Diameter
0.062 In. Wire Thickness
0.093 In. Section Width
Recommended Groove Size
0.731 In. Diameter
0.028 In. Depth
0.068 Width
Eaton Style external constant section retaining ring for SAE standard bearings metric sizes # 639R. A retaining ring is a fastener that holds components or assemblies onto a shaft or in a housing/bore when installed in a groove. Once installed, the exposed portion acts as a shoulder which retains the specific component or assembly.