Timken 55187 Single Row Tapered Roller Bearing Cone

The Timken 55187 is a precision single-row tapered roller bearing cone designed to support heavy combined radial and axial loads in demanding industrial and mobile equipment, featuring a separable cone design that eases installation and maintenance while promoting accurate shaft alignment and long service life. This 55000-series cone (inch units) provides a bore of 1.8750 in (47.625 mm), inner ring width of 1.0594 in (26.909 mm), and a weight of 6.11 lb (2.773 kg), and is commonly paired with Timken cups 55437, 55443, or 55444D. Dynamic ratings include C90 7,350 lbf (32,700 N) and C1 28,300 lbf (126,000 N), with two-row ratings of C1 49,400 lbf (220,000 N) and C90 12,800 lbf (56,900 N), and a Ca90 of 11,100 lbf (49,500 N) alongside a static radial rating (C0) of 26,700 lbf (119,000 N), making it suitable for industrial gearboxes, rolling mills, mining and aggregate equipment, construction machinery, and heavy-duty power transmission systems where durable load distribution matters. The cone uses stamped steel cage material and has an effective center location of 0.28 in (7.1 mm) with a geometry factor Cg of 0.109 and K factor of 0.66 to support reliable rotational performance in rugged applications.