A cam follower comprising: a shaft extending from a first axial end to a second axial end along a shaft axis, the shaft having a first groove proximate to the first axial end, a shoulder formed in the shaft between the first groove and the second axial end, and a first clip radially engaging the first groove; a tire defining an interior area, the tire having a flange extending radially inward from one axial end of the tire proximate the first axial end of the shaft; and a first ball bearing and a second ball bearing, the first ball bearing having a first plurality of spherical balls disposed between a first inner ring and a first outer ring, the second ball bearing having a second plurality of spherical balls disposed between a second inner ring and a second outer ring, the first outer ring and the second outer ring extending at least partially into the interior area of the tire, the first inner ring axially abuts the second inner ring and the first clip, the second inner ring axially abuts the shoulder and the first inner ring, the first outer ring axially abuts the second outer ring and the flange, and the second outer ring axially abuts the first outer ring; wherein the first clip axially retains the first inner ring and the second inner ring on the shaft between the first clip and the shoulder, characterized by a second groove extending radially outward at an opposite axial end of the tire opposite said one axial end of the tire and the second outer ring axially abutting a second clip engaging the second groove, and wherein the first ball bearing and the second ball bearing have the first spherical balls and the second spherical balls, the inner the first inner ring, the first outer ring, the second inner ring and the second outer ring adjusted in geometry to stipulate an outer diameter of the tire, and to minimize the internal clearance (C1, C2) in the respective first ball bearing and second ball bearing, the clearance (C1, C2) of the first bearing being defined between the first spherical balls and a corresponding first inner race or a corresponding first outer race and the clearance (C1, C2) of the second bearing being defined between the second spherical balls and a corresponding second inner race or a corresponding second outer race, the internal clearance (C1, C2) having a value between 0.0051 mm and 0.0203 mm thereby optimizing load distribution and service life. a shaft extending from a first axial end to a second axial end along a shaft axis, the shaft having a first groove proximate to the first axial end, a shoulder formed in the shaft between the first groove and the second axial end, and a first clip radially engaging the first groove; a tire defining an interior area, the tire having a flange extending radially inward from one axial end of the tire proximate the first axial end of the shaft; and a first ball bearing and a second ball bearing, the first ball bearing having a first plurality of spherical balls disposed between a first inner ring and a first outer ring, the second ball bearing having a second plurality of spherical balls disposed between a second inner ring and a second outer ring, the first outer ring and the second outer ring extending at least partially into the interior area of the tire, the first inner ring axially abuts the second inner ring and the first clip, the second inner ring axially abuts the shoulder and the first inner ring, the first outer ring axially abuts the second outer ring and the flange, and the second outer ring axially abuts the first outer ring; wherein the first clip axially retains the first inner ring and the second inner ring on the shaft between the first clip and the shoulder,