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7月24日星期三
Luo axis wind turbine bearings borne through the GB national standard prequalification committee
June 28, hosted by the Los axis wind turbine wheel bearing prepared "Rolling wind turbine yaw, pitch bearings", "wind turbine bearing spindle bearings" two national standards, through the National Standards Committee bearing pre.
Since 2007, hosted by the Los axis compiled Republic of China Machinery Industry Standard JB / T 10705-2007 "Rolling wind turbine bearings" since the promulgation, for our wind turbine bearings in the design, manufacture, testing, inspection, and wind turbine bearings in the series, specialization, standardization, generalization has played a positive role. However, due to the standard required in terms of wind turbine bearings general and not specific, operational, and normative execution is not strong, limiting the rapid development of wind power industry. Therefore, in order to meet the wind power companies higher demands on bearing performance, the company according to the National Standards Committee and the China Machinery Industry Federation arrangements undertaken the preparation of national standards which two tasks.
In the pre-trial conference, Director of the National Standard Authority bearing Yang Wei, State Power, CRE and other users of the expert review group composed of representatives of detail listened Luo axis of the wind turbine bearing two standard preparation instructions cum draft standard reports and combined with the actual wind power industry these two standards presented a detailed revisions. Eventually the two standard pre-trial through the National Standards Commission.
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