Bottom bracket SHIMANO UN101 68/122.5 black 1 pc. Review

Bottom bracket, UN101, 68/122.5(D-NL), no bolts, no box. Shimano article: ABBUN101B22X The bottom bracket is a bearing assembly that connects the connecting rod, the drive chainring and the bicycle frame, that is, it is an important structural element. The main function of this part is that it transmits torque from the pedal to the bicycle wheel. The connecting rods are designed for a square - "square taper". The body of the bike carriage has a length of about 68 mm. Product type Cartridge bottom brackets Producer Trademark: Shimano shimano. This structural element is located at the bottom behind the front wheel. The bottom bracket bearings must be protected from water or dirt getting into them while the bike is in motion. This part is constantly in operation, so sometimes it fails. However, you can not just buy any carriage. The choice of this element has a number of features that you need to pay attention to. Cartridge carriages with bearings are mounted in the frame. They are more practical, since such a connection is hermetically sealed, litter and water do not get there. Closed carriages do not require frequent maintenance, but they are not repairable because they are not disassembled.