Precision Bearing Industry believes that a complete research system

Bearing accelerate product development and process innovation, effectively supporting the oil and gas industry to promote the successful development series bearings , bearing subway loading test, the product lightweight technology upgrading, development of motor bearings . Companies large special bearings advanced manufacturing technology wind turbine bearings Joint National Engineering Laboratory where the relevant departments have been approved , will further enhance the company 's R & D capabilities . Meanwhile, the company won two secret military field qualifications, passed the state weaponry research and production licenses on-site Precision bearing assessment and weaponry GJB9001B-2009 quality management system certification second phase of the initial audit . 2013 Northwest bearing R & D expenditure amounted to 22,432,000 yuan , accounting for the company's net assets was 8.1% , accounting for the proportion of operating revenue was 6.9 %. Industry believes that a complete research system , active R & D investment , experimental methods , such as high levels of the company to provide a strong guarantee for the development of high-end bearings

stimulating demand for construction machinery

Since the implementation of the " two sessions" of economic growth targets proposed implementation of urban infrastructure construction projects around the climax off , started intensive railways, highways , subways, affordable housing , water , ports, airports and other major projects , prompting the construction machinery manufacturing recovery industry , stimulating demand for construction machinery , bearings market demand will subsequently released. From recent Gcr15 spindle steel downstream users in March production plan research situation , automobiles, marine vessels , oil pipeline industry to maintain stable operation ; engineering machinery, Precision bearing industry increased. Downstream industry demand for effective bearing steel increased compared with February . For example Gcr15 bearing steel companies in March contract orders generally good condition . Improved downstream demand is conducive Gcr15 bearing steel market stability , bearing steel prices steady rise is a major supporting force .

Bearing Manufacturing Industry Development of China's strong momentum of steady bearing steel market will bring positive effects to the good . A number of significant growth in roller bearings demand for high-end bearings , such as aerospace bearings, machine tool spindle speed precision bearings, ball bearing precision angular contact ball bearings , high-speed spindle bearings, precision bearings for machine tools photovoltaic industry , turntable bearings, wind power bearing , shield machine bearings, rolling mill bearings, high-speed rail bearings, automotive bearings, crane sheave bearings , turbocharger bearings, hydrodynamic bearings and so on.

double row and four row circular cone roller bearings

Tapered roller bearing mainly bear radial primarily diameter, the axial load. Bearing capacity depends on the Angle of the outer ring raceway, the greater the Angle, the greater the carrying capacity. The separated type bearing is a bearing, according to the wind turbine bearings  the number of columns of the scroll body can be divided into single row, double row and four row circular cone roller bearings. Single row tapered roller bearing clearance to users in the installation adjustment; Double row and four row circular cone roller bearings clearance has according to user requirements for a given when the products leave the factory, not the user.
Have a conical taper roller bearing inner ring and outer ring raceway, the tapered roller are arranged in between. All projection line on the surface of the cone axis high precision bearing  the same points together. This design make the taper roller bearing is especially suitable for composite (radial and axial load. Bearing axial load capacity is mostly determined by the contact Angle alpha; Alpha Angle is larger, the higher axial load capacity. Angle size by calculating coefficient of e; E value, the greater the contact Angle, the greater the bearing axial load of the greater applicability.

This load is Bearing Test Machine characterized by a relatively static radial load vectors and synthesis loop

Synthesis of radial load on the fixed load of the load from the local fixed ring raceway ring is exposed and sent to the appropriate local or bearing shaft . This load is characterized by a relatively static radial load vectors and synthesis loop . Bear the load ring , you can use a relatively relaxed. Synthetic <BR> rotational load of radial load applied to the full complement cylindrical roller along the circumferential Bearing manufacturer direction of the rotating bearing ring on the roller , turn the various parts , such as the rotation load , which is determined by the combined vector phase loop radial load rotation, bear . Work closely with the rotating load ring , in exceptional circumstances , load, if elected , is light or heavy loads , low speeds , and only occasionally rings , bearings hard materials and high slewing bearing surface roughness , rotating load bearing rings can also be used more loosely . Third load swing directional load or no load , the load ring radial direction of the uncertainties of the load, which is characterized by a ring raceway radial load vectors role of an impact load in a certain area , vibration, load , and its direction is the swing roller to bear a certain area , or acting on the bearing load , load values ​​change frequently . To bear the load swing , outer ring and weeks , bearings, holes should close conjunction. <BR> Used to adjust the full complement cylindrical roller bearings radial clearance as follows : <BR> 1, for cylindrical and oval-shaped bearing backlash

ZYS Slewing bearing Internal factors mainly refers to the structural design,

Indeed , in the ideal prerequisite called permanent  ZYS Precision Bearings  life is possible. Factors affecting bearing life there are many factors that can be divided into use and internal factors . The main factor is the use of installation and adjustment , use and maintenance , repair and other maintenance meets the technical requirements. Installation conditions is one of the primary factors in the use of factors , caused by improper installation of the entire  rotary table bearing  force between the various parts of the state change, bearing in operation under abnormal state , and early termination of life. Internal factors mainly refers to the structural design, quality manufacturing processes and materials , such as the three factors that determine the quality of the bearing . Bearing manufacturing generally through multi -channel processing . The reasonableness of the processing technology , advanced, will also affect the stability of the bearing life . Which affect the quality of the finished cylindrical roller bearings heat treatment and grinding processes, and the failure of the bearing has a more direct relationship

Precision Bearing Because the former leads to the failure of both sides working conditions are similar

If you hear noise emitted by imported parts , first of all, it is important to find the location of the noise occurs . There are many moving parts may produce noise , and some may not rotate the rotation member and the contact member occurs . If the confirmation is four  Slewing bearings  noise , may be damaged and need replacing.  2. Because the former leads to the failure of both sides working conditions are similar , so even just a bad one , it is recommended to replace in pairs . 3. Relatively sensitive to imports, in any case need to adopt the taper roller bearing right approach and the right tools. In storage and during installation , the bearing parts can not be damaged. Require greater pressure pushed , so they need special tools. Be sure to refer to the manual . 4. Installation should be clean and tidy environment, will shorten the tiny particles into the four -row cylindrical roller bearing life. Maintaining a clean environment when replacement is important. Allowed to tap with a hammer , be careful not to fall to the ground ( or similar misconduct ) . Before installation of the shaft and housing should also check condition , even a slight wear will lead to poor fit , thereby causing damage.  Metallurgical quality imported bearing materials was the main factor in the impact of early bearing failure . With metallurgical technology ( such as bearing steel vacuum degassing, etc. ) 

ZYS taper roller bearing assembly and the contact surface must be clean .

( 1 ) Maintenance Technical slewing crane mounted holder must have sufficient rigidity , the mounting surface should be smooth . Slewing bearing assembly prior to the stress should be treated to reduce maintenance crane slewing bearing deformation. Slewing bearing assembly and the contact surface must be clean .

( 2 ) the use of crane maintenance techniques should be noted that the noise changes and changes in rotation ZYS aviation bearing sistance moment , crane maintenance , if any irregularities should be overhauled .

( 3 ) Maintenance Technical slewing tower crane must lift or store level , not vertical lifting crane maintenance or storage, in order to avoid distortion.

( 4 ) maintenance crane technology in the bolt is fully tightened before the crane inspection and maintenance ZYS Bearing life testing machine techniques should be meshing gears , the gears meshing conditions should be consistent with the requirements of precision : the crane maintenance techniques that gear pair operating at a slight braking surface of the lower teeth the distribution of the contact spot on the tooth height direction of not less than 25% , crane maintenance technology in the longitudinal direction of the tooth is not less than 30%.