This is the second Cylindrical roller bearing in Dusseldorf, Germany metallurgy casting show

May 2010 in the capital Beijing opened! This is the second in Dusseldorf, Germany, metallurgy, casting show, the world's second largest art exhibition. By then will debut a new look, and its advanced knowledge, technology, products and solutions to demonstrate their knowledge engineering tapered roller bearingcompany, brilliant image!

The exhibition will be more than a century  variety of applications in the metallurgical industry, the accumulation of advanced technology and a concentrated expression of the comprehensive strength. The entire show will be based on five technology platforms, namely  bearings and units, seals, lubrication systems, mechatronics and services, all-round display for the metallurgical industry to provide its bearings for printing machine unique products and solutions to help customers improve profitability capacity, energy conservation, and improve the environmental impact.

exhibitors Twelfth China International Metallurgical Industry Expo period, SKF features technical seminars will be held, a comprehensive introduction of Bearing in metallurgical industry strengths and capabilities, and vigorously promote SKF last couple of years with all walks of life and cooperation accumulated advanced knowledge and technology concepts.

How Cylindrical roller bearing should choose ?

Means a radial clearance of the rolling bearing of a stationary collar and another collar in the direction perpendicular to the bearing axis , from one extreme position to another extreme position of the movement amount
tapered roller bearings structural features Means a radial clearance of the rolling bearing of a stationary collar and another collar in the direction perpendicular to the bearing axis , from one extreme position to another extreme position of the movement amount . Select the correct bearing clearance or not, precision mechanical operation , bearing life , friction , temperature , vibration and noise , etc. have a great impact. Such as radial bearing clearance selection is too small, will cause the body to withstand an increase in the number of load rolling contact sendzimir mill bearings stress decreases, more stable operation , however , friction will increase, temperature will increase. On the contrary , it increases contact stress , vibration , and reduced frictional resistance , low temperature . Accordingly, bearing conditions, to choose the most appropriate clearance values ​​, has very important significance.

In fact when the election bearing clearance must fully consider the following several major factors:

( 1 ) bearing and shaft and housing bore with the tightness will lead to changes in the bearing clearance values. After the general bearing clearance will reduce the value of the installation ;

Cylindrical roller bearing mostly in larger models grease lubricated bearings

But not in the audio frequency range, and abnormal noise does not cause noise. Jarring sound and control creaking  bearings are cylindrical roller bearings shrill sound of metal friction can occur on all occasions , mostly in larger models grease lubricated bearings , and in the base oil properties more susceptible to deterioration of grease , hardly occurs when oil lubrication . In addition, more prone to winter , when the pure radial load, radial clearance prone to big occasions , and with thin section ball bearing different types of size , in a particular speed range likely to occur , both will occur continuously intermittent will appear . The outer ring raceway take special processing methods to prevent the emergence of creaks , the choice of such a high temperature bearings when necessary or appropriate to reduce the bearing radial clearance , excellent performance and improved grease and cylindrical roller bearings match mechanical rigidity. (1) Choose low-noise bearings ; This depends to buy high-quality  tapered roller bearings   bearings are generally good with high steel material , with high -density , high- resistance characteristics ;  (2) to try to eliminate part of the application from the bearing noise , is in the link above, lubricating grease , lubricating materials must be selected , you can play a multiplier effect ;  (3) avoid the host resonance , avoiding sensitive resonance speed ; this point requires professional installation to avoid resonance problems ;  (4) If the other methods ineffective, to take additional measures noise and muffler , and install some sound control equipment and so on.