Base bracket: The bearing system that the pedals (and cranks) rotate all around. Incorporates a spindle to which the crankset is attached along with the bearings them selves. There's a bearing floor over the spindle, and on Each and every with the cups that thread into your frame. Technical Explanation: https://cristianawogu.prublogger.com/34133475/chair-lift-service-and-repair-near-me-no-further-a-mystery