What is different during NJ and NU bearings

What is different during NJ and NU of cylindrical roller bearings?

As we know that, NJ and NU are belong to cylindrical roller bearings, which the internal structure of the cylindrical roller bearings adopts the rollers in parallel arrangement, and the rollers are equipped with spacer keepers or isolation blocks, which can prevent the tilt of the rollers or the fricition between the rollers, and effecitively prevent the increase of rotational torque.

For example, NJ2319 and NU2319 are belong to cylindrical roller bearings, and their inner ring can be taken down, but it is divided into NJ and NU, NJ inner ring can only be taken down from one side, but NU inner ring can be taken out on both sides, NU is equivalent to a cylinder inside. Most of them time, with the same number bearings, NJ and NU are with the same price. 

Hope this description can help you understand the difference during of NJ and NU series cylindrical roller bearings.

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