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Bearing professor briefly describes the defects in the application of smooth grease
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.2) It is difficult to separate the moisture, dust and grinding debris. If it is smooth oil, the impurities usually sink to the lower part; or it is easily removed by the oil filter.
.3) The mixing resistance is large; therefore, the heat is large; the cooling effect is poor. However, there should be a little attention here; this has a close relationship with the smooth method. For example, the smooth oil is smoothed with a full-immersion (or semi-immersion) oil bath. The use of fat is less than the power consumption of oil. For example, the British Journal of Conflict and Smoothness, 1973, 6 reports: the use of rolling bearings with a diameter of 100; the speed of 1500r / min; smooth grease; energy-consuming domestic examples Many; for example, the motor power of the refractory tunnel kiln of the Chongqing Iron and Steel Company Refractory Plant is smooth grease compared to the smooth oil of N68; the bearing temperature is 4~6 °C lower.
.4) It is not suitable for high speed. Generally speaking, the general grease smooth grease is only allowed to use the transmission speed to become the DN value (bearing inner diameter mm × rotation speed r / min) is less than 300,000 mm0 鹯 / min. Follow the smooth grease The development of skills; smooth composition can be applied to the DN value of 500,000 to 600,000; or even 1 million. The highest speed example of smooth fat application is (initiation of the Japanese "defense skills" report in 1984) the launch of high-altitude unmanned jet detection aircraft Bearing; in order to reduce the weight of the aircraft; smooth grease smooth. Bearing inner diameter ф25mm, temperature 200 ° C; speed 4600r / min, DN value is 1.8 million; with the composition of round grease satisfied life 30min application demand (5) mixing resistance Large; therefore, the heat is large; the cooling effect is poor.
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V Type Deep Groove Ball Bearing
V-groove bearings are precision ground, double row, angular contact bearings. The concentric and adjustable bushings provide a simple, effective means of adjusting the free play of the guide wheel system. Ideal for linear motion applications where the bearing runs along a rail or track as well as cable guide applications.
Types: V-groove, U-groove, G-groove, guide wheel
Configurations: Sealed, Shielded, open
Materials: 52100 steel, stainless steel
NPB offers concentric and adjustable configurations, single and double row, in both inch and metric sizes from stock.
Typical applications include:
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• Pulleys
• Specialty applications
V Type Deep Groove Ball Bearing,High Speed V Groove Bearing,Miniature V Deep Groove Bearing,High Speed V Groove Ball Bearing
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