Precision bearings according to ISO grading standards are divided into: P0, P6, P5, P4, P2. Rank higher in turn, where P0 is the general accuracy, other grades are precision level. Of course, different classification standards, different types of bearings, their classification method somewhat different, but the meaning is to the. The use of performance requirements of precision bearings rotating body with high runout accuracy, high-speed rotation and small changes in friction and friction.
2013年8月8日星期四
NTN Bearing deep groove ball bearings with sealing material performancerequirements'
Kunshan bearing: NTN bearings factors mainly refers to the installation and adjustment, use and maintenance, repair and other maintenance meets the technical requirements. According deep groove ball bearing installation, use, maintenance, maintenance of the technical requirements for operation of the bearings to bear the load, speed, temperature, vibration, noise and lubrication condition monitoring and inspection, abnormal immediately find reasons to adjust bring it back to normal.
Deep groove ball tapered bearing seal data is to ensure effective functioning of the primary sealing element selection sealing materials, sealing element according to the first if the work, such as the use of temperature, operating pressure, by the use of working media and sports style pattern and so on. The sealing of the basic request the following information:
1. NTN Bearing wear, do not corrode the metal;
2 oxygen resistance and good resistance to aging, durable;
3.Bearing low temperature flexibility, high temperature does not synthesized, softening, hardening is not low;
4. NTN Bearing with working media, no swelling, synthesis, hardening;
5 elasticity and hardness properly, tighten forever deformation;
NTN Bearing materials metallurgical quality deep groove ball bearing affect early failure of the main factors. As metallurgical techniques (such as bearing steel vacuum degassing, etc.) progress, improve the quality of raw materials. Raw material quality factors in bearing failure analysis in the proportion has decreased significantly, but it is still bearing failure is one of the main factors. Appropriateness of the selection is still bearing failure analysis must be considered.
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