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Question:

What is the difference between cylindrical roller bearings NU and NJ? The role of retaining edges

What is the difference between cylindrical roller bearings NU and NJ? The role of retaining edges

Answer:

NU, there are two double side, in the outer ring, inner ring without edge. The axial displacement is allowed in the two directions between the shaft and the bearing seatNJ, the outer ring double edge, with inner ring single file edge. It can therefore be axially fixed in one direction
NJ, the outer ring double edge, with inner ring single file edge. It can therefore be axially fixed in one direction
NU, there are two double side, in the outer ring, inner ring without edge. The axial displacement is allowed in the two directions between the shaft and the bearing seat

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