Not familiar with that bike but the BB you described is a sealed unit, negating the possibilinot ty of just a new spindle(axle, as you called it). There are other numbers on the label of the old BB shell that tell you the size/thread you need for the replacement. There should a number like 73x118, 73 the BB shell width and 118 is the spindle length. If the first number is 68 or 73 the shell is English thread- 70 is Italian. If the shell label is covered in rust these details should be visible. If in doubt, measure the shell and spindle w/ a caliper.