Another high wear component on some e-bikes is the SES sprocket bearing. It suffers the same issues as the Bosch motor bearings because there are no water seals for the bearing. We remove the bearing seals and replace the standard grease with a water resistant bearing grease. These bearings run at relatively low speeds when fitted within the SES sprocket and will not overheat by “over packing” They should not be used for other applications.