Hi Grumpy, There is no place holding ball bearings. I think you're talking about the odd shaped piece that holds 5 ball bearings that you can take off. This mower doesn't have that bit, there's just a shaft. The photo doesn't show what is under the fins. I'll post another one but I can't do it until tomorrow.

Last edited by sparker; 02/07/12 11:13 AM.