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How to install nup type cylindrical roller bearing?

2,663 Published by admin Apr 09,2021

Cylindrical rollers and raceways are linear contact bearings with large load capacity and mainly bear radial load. The friction between the rolling element and the retaining edge of the ring is small, which is suitable for high-speed rotation. According to whether the ring has ribs, it can be divided into single row cylindrical roller bearings such as NU, NJ, NUP, N, NF, and double row cylindrical roller bearings such as NNU and NN. The bearing has a separable structure with inner ring and outer ring.
nup type cylindrical roller bearing factory
When many people install the nup type cylindrical roller bearing, the bearing is damaged due to the wrong installation method and cannot work normally. I would like to emphasize that the correct installation method of the nup type cylindrical roller bearing is a very important link. .
There are two common methods for correct installation of nup type cylindrical roller bearing: one is cold installation and the other is hot installation.
nup type cylindrical roller bearing manufacturer
   1. Cold installation
   When installing a small bearing that does not fit too tightly, you can use a sleeve and hammer the sleeve gently to install the bearing to a suitable position. When knocking, it should act on the nup type cylindrical roller bearing ring as evenly as possible to prevent the bearing from tilting or skewing. Most nup type cylindrical roller bearings are installed by press-in method. If the inner and outer rings of the cylindrical roller bearing are to be installed on the shaft and the bearing seat at the same time, the same pressure must be applied to the inner and outer rings at the same time, and the contact surface of the installation tool must be on the same plane.
nup type cylindrical roller bearing plant
   2. Hot installation
   Under normal circumstances, it is impossible to install larger nup type cylindrical roller bearing without heating the nup type cylindrical roller bearing or bearing seat, because as the size increases, the greater the force required for installation. The temperature difference between the nup type cylindrical roller bearing ring and the shaft or bearing seat required for thermal installation mainly depends on the amount of interference and the diameter of the bearing fitting. The heating temperature of open bearings shall not exceed 120°C. It is not recommended to heat cylindrical roller bearings with seals and dust caps above 80°C (make sure that the temperature does not exceed the allowable temperature of the seals and grease). When heating the nup type cylindrical roller bearing, it must be heated uniformly, and there must be no local overheating.

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