Bearing (SKF No.) 30X72X19

Triumph 3TA,T21,T90 350cc Unit twins Crankshaft drive side, 5TA,T100,TR5 500cc Unit twins Crankshaft drive side (ball race up to 1967), T120,TR6,6T 650cc Unit twins Crankshaft timing side (metric bearing 1972-), T140,TR7,TR7T Trail 750cc Unit twins Crankshaft timing side, and Norton Dominator/Model 7 500/600/650cc Crankshaft timing side, Commando 750/850cc Crankshaft drive side & timing side bearing.