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IKO rolling bearing selection of the necessary tips
Jan 09, 2018

1, with low noise requirements of the rolling bearings are: In our standard bearings, some single row radial ball bearings and short cylindrical roller bearings for motor bearings with low noise varieties. One ball bearing diameter φ2.5mm ~ φ60mm there are several varieties with Zl, Z2 and Z3 three suffix, respectively, corresponding to three different low noise requirements, and roller bearings from N309 to N322 type a total of eight models are Varieties manufactured according to low noise standards. These IKO bearings can be fully applied to other machines with low noise requirements, and the price is cheap, such as the type and size to meet the requirements, try to use these two types of low-noise bearings. The company is located in:

2, the use of relatively small noise IKO bearings: When you can not use the above two types of low-noise bearings, the noise can be relatively small bearings. Specific comparison based on the following:

1) The bearing of the ball bearing is lower in noise than the roller bearing, and the bearing with relatively sliding relatively less (frictional) noise is lower than the bearing with relatively slippery; the balls with many balls are thick and the noise is small;

2) The use of solid cage bearing noise is relatively lower than the use of stamping cage bearing;

3) The use of plastic cage bearing noise than the use of the above two kinds of cage bearings are low;

4) high precision bearings, especially the use of rolling elements with higher precision bearings, the noise than the low-precision bearings is relatively small noise;

5) The noise of small bearing is relatively smaller than the noise of large bearing.

Vibration IKO bearings can be said to be quite sensitive to damage, peeling, indentation, rust, cracks, wear, etc. will be reflected in the bearing vibration measurement. Therefore, by using a special IKO bearing vibration measuring instrument (frequency analyzer, etc.) can measure the size of the vibration, through the frequency of points can not be extrapolated to the specific circumstances. The measured values vary depending on bearing conditions or sensor installation location, etc. Therefore, the measured values of each machine must be analyzed and compared beforehand to determine the judgment criteria.

Scratches and control methods Rolling bearings rolling surfaces such as cracks, indentation or rust, rivets happen rivets that occur as periodic vibration and noise, the period may be fixed, but most of the speed and the speed of a certain relationship, the scars In the channel will occur continuously, the scratch on the ball when the hidden, and this noise with the installation and lubrication conditions have some changes. This type of noise control methods are: installation IKO bearings can not be percussion, the bearing assembly with the shaft and then into the bearing seat to prevent bearing ramp; inventory IKO bearings prevent corrosion and transportation to prevent shock and vibration; the use of high viscosity Grease.