Spherical Bearing Liner Material PTFE Bore Diameter 1/2 in Ball Diameter 0.687 in Outer Ring Width 0.343 in Outside Diameter 7/8 in Outer Ring Material Alloy Steel Ball Material Alloy Steel Ball Material Grade 52100 Bore Diameter Tolerance -0.0005/+0.0015 in Closure Open Finish Chrome Plated Flat Diameter 0.53 in Inner Ring Width 0.437 in Lubrication Openings Lubrication Hole Maximum Ball Swivel 8 Degrees Outside Diameter Tolerance +0.0000/- 0.0007 in Overall Width 0.437 in