surface may have cylindrically shaped contact surfaces that contact the axial ends of the rollers 30 so the rollers can be guided with a full line of contact 62 fig8 across the roller face whether the outer flange portion is in its designed position or skewed from loading or manufacturing inaccuracies the cylindrical shaped guide surfaces 60 may be formed on the outward flange portion 24 adjacent the pockets 28 on the inner side surfaces of the outward flange portion the guide surfaces may be coined into a cylindrical shape fig5 6 or otherwise formed as a protrusion fig7 a 7 b the guide surfaces 60 may be continuous along the pocket 28 fig8 or may be intermittent fig5 6 as best shown in fig8 the guide surfaces 60 may be arranged in a straight line 62 across the pocket thus defining a polygonal orientation of the guide surfaces on the outward flange the number of sides to the polygon may correspond to the number of pockets and rollers of the bearing as shown in fig2 there are 18 pockets defining a 18 sided polygon the guide surfaces are arranged to correspond to each side 70 of the polygon the guide surfaces 60 may be cylindrically shaped and abut against the axial end faces of the rollers substantially uniformly with line contact 62 across the axial end surface of the roller the line contact improves the lubrication film that should exist between the roller face and guide surfaces additionally providing full line contact across the roller face allows the generally cylindrically shaped rollers to be guided by the guide surfaces with minimal skew no matter if the flanged portion of the.