Based on Nexen® innovative roller pinion technology, the geared bearing comes complete with a gear and a precision grade, high capacity bearing. With a wide range of sizes and ratios, all with zero backlash, a geared bearing can fit in any application. Nexen® Geared Bearing, External, 115 mm Bore, 310 mm OD, 9.8:1 Gear Ratio, 98 Teeth, 270 mm Diameter Hub, Bare Steel, Black Oxide