YBN Bearings Experience High Speed Testings

High Speed Bearings

YBN Bearings Experience High Speed Testings

When a bearing operates under load, heat is generated internally as a result of rolling, sliding and fluid friction. As the bearing speed increases, the temperature of bearing also increases. If the speed goes too high, bearing temperature would exceed certain limits, the efficiency of the lubricant would fall drastically and the bearing will no longer operate in a stable manner.

In order to control temperature rise at high speed, YBN technology center successively did experiments and research on dozens of grease that are provided by world famous oil manufacturers, finally decided a few of imported grease that are most suitable for electric power tools characteristics and requirements. Their comprehensive performance at high speed is very good, especially for lower temperature rise and better life performance.

General manufacturers only measure the temperature of bearing outside diameter, which is unscientific. As shown below, bearing surface temperature is only 40°C, while the bearing internal and grease temperature has reached 130°C. YBN has taken the lead to treat bearing inside maximum temperature as a measure of the temperature indicator. When the environment temperature is 25°C, the rotating speed is 18000RPM, YBN bearing and a well-known brand bearing run for two hours under the same axial load of 100N, we compared the bearing highest temperature measured by the thermal infrared imager.

Experiment Condition	Bearing Item	Highest temperature		Average temperature
Experiment Condition	Bearing Item	YBN bearing	A well-known brand bearing	YBN bearing	A well-known brand bearing
When the environment temperature is 25°C, the rotating speed is 18000RPM, bearings run for two hours under the same axial load of 100N, we compared the bearing highest tem- perature measured by the thermal infrared imager. Effective measuring distance is 5M.	608	42.26 °C	61.41 °C	31.59 °C	39.89 °C
	6201	77.24 °C	132.87°C	54.76 °C	76.10 °C
	629	53.69 °C	109.71°C	32.20 °C	53.69 °C
	6002	42.41 °C	100.18°C	26.60°C	50.13 °C

The temperature of YBN bearings for running at high speed is much lower than other brands of bearings, YBN bearings can withstand higher speed and have longer life.

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