NSK 2306 K Self-Aligning Ball Bearing - 30 mm ID, 72 mm OD, 27 mm Width, Tapered 1:12 Bore, Normal Spanner Wrench Single row needle roller bearings

Single row needle roller bearings incorporate cylindrical rollers that are small in diameter relative to their length

mechanically self-locking shaft locknut with a base threaded nut in carbon steel and hardened alloy fasteners

And a whole lot more

It is used together with matched MB series lockwashers: an external tab on the lockwasher bends into a slot on the locknut to prevent the assembly from loosening due to vibration

The 16-piece set from the screwdriving tool specialist Wera solves the most important screwdriving problems associated with bicycles

NSK 2306 K Self-Aligning Ball Bearing - 30 mm ID, 72 mm OD, 27 mm Width, Tapered 1:12 Bore, Normal Spanner Wrench Single row needle roller bearingsSelf Aligning Ball Bearing with tapered bore Self Aligning Ball Bearings have two rows of balls and a common concave sphered raceway in the outer ring. They are insensitive to angular misalignment of the shaft relative to the housing. Manufactured to precision tolerance class for demanding applications. Robust steel cage construction ensures durability. Suitable for use in a wide range of industrial applications where reliability and performance are