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NUP313ECP type is cylindrical roller bearing, single row
NUP design, inner diameter: 65mm outer diameter: 140mm thickness: 33mm
Cylindrical roller bearing installation three steps to teach you to learn:
Rolling bearings are widely used important mechanical basic parts, and are widely used in various fields of national economy and national defense. Rolling bearings have flourished along with the bicycle, automobile and other industries during the second industrial revolution, and have gradually become a highly specialized industry in the world. So what is its installation method? The following is a detailed introduction:
(1) Install the labyrinth ring (waterproof cover). The fit between the labyrinth ring and the roll neck is generally a tight dynamic fit. When installing, tap it in lightly with a copper rod. The two faces of the labyrinth ring must be parallel and fit closely with the shoulder of the shaft body and the inner ring of the bearing.
(2) Install the inner ring. The inner ring of the four-row cylindrical zizi bearing is an interference fit with the roll neck. When installing, the inner ring should be heated to 90-100°C. Do not exceed 120°C to prevent incomplete retraction of the inner ring after cooling. The heating method can be oil tank heating or induction heating.
It is absolutely forbidden to use open flame heating. The increase of inner diameter when heated by oil tank is calculated according to the following formula: △d＝12.5×10-6△t.d In the formula: △d－the increase of inner diameter of inner ring after heating (mm) △t－the difference between oil temperature and room temperature Poor (°C), the room temperature standard is 20°C. d－－Inner diameter of the inner ring (mm)
When installing double inner rings such as FCD type, the inner ring and the inner ring, and the end faces of the inner ring and the labyrinth ring must be in contact with each other in the axial direction during the cooling process of the inner ring, and use a feeler gauge to test.
3) Install the outer ring of the four-row cylindrical roller bearing. The outer ring and the inner hole of the bearing seat are generally a transition fit. For smaller bearings, the outer ring, the roller and the cage can be gently tapped with a copper rod. into the bearing housing. For larger bearings, the outer ring and the outer ring assembly can be lifted by using the hoisting holes provided on the outer ring or the cage, and vertically lowered into the bearing housing.
For FCDP four-row cylindrical roller bearings with live ribs, the side retaining rings, outer ring assemblies, and middle retaining rings should not be interchanged with bearings of the same type. Marks Ⅰ, Ⅱ, Ⅲ, Ⅳ marked on the end face of the outer ring are the marks of the load zone. When installing and using for the first time, align the direction of the rolling load with the first mark, and then align the rolling load with the rest of the marks when cleaning and reinstalling in order to prolong the service life of the bearing.
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