ZXY Cylindrical roller bearings High precision bearing

The ZXY Cylindrical roller bearings High precision bearing and raceways are line contact bearings. Load capacity, mainly bear radial load. The friction between the rolling element and the ring rib is small, making it suitable for high-speed rotation. Depending on whether the ring has ribs, it can be divided into single-row cylindrical roller bearings such as NU, NJ, NUP, N, and NF, and double-row cylindrical roller bearings such as NNU and NN. This bearing has a separable inner ring and outer ring. Cylindrical roller bearings with no ribs in the inner ring or outer ring. The inner ring and outer ring can move relative to each other in the axial direction, so they can be used as free-end bearings. Cylindrical roller bearings with double ribs on one side of the inner ring and outer ring and a single rib on the other side of the ring can withstand a certain degree of axial load in one direction. Generally, steel plate stamping cages or copper alloy machined solid cages are used. However, some use polyamide molded cages.

ZXY Cylindrical roller bearings High precision bearing Pay attention to the problem

Vibration aspect

In daily use, vibration is very sensitive to bearing damage. Peeling, indentation, rust, cracks, wear, etc. will all be reflected in bearing vibration measurements. Therefore, the size of the vibration can be measured by using a special bearing vibration measuring instrument (frequency analyzer, etc.), and the specific abnormality can be inferred from the frequency distribution. The measured values vary depending on the operating conditions of the bearing or the installation position of the sensor. Therefore, it is necessary to analyze and compare the measured values of each machine in advance to determine the judgment criteria.

ZXY Cylindrical roller bearings High precision bearing Temperature

High temperatures often indicate that cylindrical roller bearings are in abnormal conditions. High temperatures are also harmful to bearing lubricants. Sometimes bearing overheating can be attributed to the bearing's lubricant. If the bearing is rotated continuously for a long time at a temperature exceeding 125°C, the service life of the bearing will be reduced. Causes of high temperature bearings include: insufficient lubrication or too much lubrication, impurities in the bearing raceway, too high limit speed, long-term overload operation of the bearing, etc.