text: ok this is simple. ive taken apart a few shimano hubs and they have had either 9 or 11 ball bearings on each side.\n\neasy way to figure out how many: \n-have a tray of grease on hand\n-lay on some grease in the area were the bearings go\n-dip each ball into the grease and use tweezers to put them in place\n-only a certain amount will fit into the bearing race\n-put the axle back through when ur done and see if it rotates smoothly\n\ngood luck