Special combination bearings of machine turntable

Turntable bearing CNC machine tools and machining centers as an important component parts, its performance directly affects the positioning accuracy and machining accuracy of the workpiece, the bearing structure of complex, high-tech and difficult process, ZYS an earlier successful development of such high-precision bearings products in the domestic manufacturers.

Turntable bearing has two types, one is thrust / radial bearings that single row cylindrical roller bearings and thrust cylindrical roller bearing. The other is a two-way angular contact thrust ball bearing . Currently, sealed angular contact ball bearing the turntable bearing rotary table machine, indexing plate, etc. are basically used axial / radial bearings.

Why two way thrust angular contact ball bearing can't bear radial load?

By the two axis ring, a seat ring, a sleeve, surface profile measurement ,two sets of roller and cage assembly. The thickness of the grinding sleeve can adjust the preload of the bearing.

The nominal contact angle of the bearing is 60 degree, which can bear the large axial load, and the axial rigidity is high.

The nominal diameter of the contact ball bearing and the outside diameter of the double row cylindrical roller bearing are same, sealed angular contact ball bearing but the deviation is small, so the fit of the hole of the box is in a certain gap. Therefore, the two-way thrust angular contact ball bearing can not bear radial load.

Rolling bearing accelerated life testing machine

This paper summarizes the status and development of rolling bearing accelerated life testing machine and the test technology. Discusses the design of life testing, analysis and processing, the life test data. In the eleven five China bearing industry development planning, key requirements carried out to improve the bearing life and reliability engineering technology research. Low cycle load, high speed bearing ,the traditional bearing life test method of high speed, high cost and reliability of test results. And strengthen test while maintaining contact fatigue failure mechanism of the same premise. Shorten the test time.

Reduces the test cost, thus speeding up the development cycle in the product and improve the pace, angular contact thrust ball bearing ,so the accelerated bearing life test has attracted more and more attention, research and application.

Wazhou wind power spindle bearing testing machine Chinese Patent Excellence Award

Recently, the State Intellectual Property Office and the WIPO jointly held the 16th China Patent Awards announced in Beijing, surface profile measurement ZWZ wind power spindle bearing testing machine technology by China Patent Excellence Award. This means that the market value of this technique has been nationally recognized.

According to the Institute of wind power bearing ZWZ engineering and technical personnel Lin Tian introduced WBGC wind power spindle bearing testing machine first of its kind in the country. As the domestic wind turbine supporting spindle bearings imported products, roughness measuring instrument ,domestic enterprises that type of bearing bearing design, manufacturing technology is relatively backward, especially the lack of independent testing machine is a major bottleneck.

In recent years, ZWZ spindle bearings through the development of wind turbine test methods and platforms to build fan support spindle bearing test platform and testing standards and testing procedures, and ensure that all domestic fans supporting bearing reached the international advanced level. Wafangdian Bearing Group has been successful for Guangdong Mingyang, sealed angular contact ball bearing , VESTAS and other customers at home and abroad to provide 1.5 MW, 2 MW, 2.5 MW and 3.0 MW wind turbine supporting spindle bearings.