jarmush, If you are talking about the bearing in the blender shaft assembly, it will be sealed/non greaseable for food safety reasons and new part is available to change. Below is a guide on how to change the blade/shaft assy., and a couple links to possible replacement part which you can also do a search for better pricing perhaps. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.

Cuisinart Smart Stick CSB-75 Blade Replacement

https://www.cuisinart.com/parts/hand_ble...

http://www.ereplacementparts.com/cuisina...