Haibike SES modification for gear bearing.

Description

Another highly wearable component in some electric bikes is the SES chain bearing. It suffers from the same problems as Bosch motor bearings, because it has no water seals.

We remove the bearing seals and replace the standard grease with water-resistant bearing grease. These bearings rotate at relatively low speeds when mounted on an SES sprocket and do not overheat by ”overfilling”. They should not be used for other applications.