Bearing, ball, crankshaft, 30 x 72 x 19mm, Triumph unit twins 3TA, T21, T90, 5TA, T100, TR5 (driving side), T120, TR6, 6T, T140, TR7 (timig side), Norton Dominator (timing side), Commando (driving and timing side)
For roll bearing see 49 00046