Spherical Plain Bearing Liner Material No Liner Bore Diameter 2 1/4 in Ball Diameter 3.228 in Outer Ring Width 1.687 in Outside Diameter 3 1/2 in Outer Ring Material Alloy Steel Seal Material Rubber Ball Material Alloy Steel Ball Material Grade 52100 Bore Diameter Tolerance -0.0006/+0.0000 in Closure Double Sealed Finish Protective Coating Inner Ring Width 2.166 in Lubrication Openings Lubrication Hole Maximum Ball Swivel 6 Degrees Outside Diameter Tolerance +0.0000/- 0.0005 in