1-120-898, 141341, 1458M12649, 2140088, 254-91, 2HP352, 4096591, 63680, 70228152-8, 834063, 8824117, BT12649M, FB14850, K3357, KM12649, M12649, NBM12649, PM12649, Y12649. They incorporate logarithmic roller raceway profiles with a ultra smooth surface finish for smooth and quiet operation.
