ZYS Wind power bearing

In 2001,ZYS was China’s first company to undertake the project of “Main bearings development of large and medium size wind turbine generator system” from National Ministry of Science and Technology.Due to this project,ZYS acquired the core technology and intellectual property in designing,manufacturing and testing the yaw bearing,pitch bearing,wind leaves bearing,gearbox,and generator bearing in wind turbine system.
We have developed a professional group in wind turbine bearing design,property analyses,manufacturing and testing.Cooperating with Xi'an Jiaotong University,we cultivated China’s first postdoctor in the major of wind power generator bearing and exploited the integrated design and analysis software that can conduct load spectrum analysis of wind turbine generator bearing,stress analysis,design verification of key structural parameters,calculation of effective hardened layer depth and the verification of gear and bolt strength,etc.
ZYS wind turbine generator bearings have reached international advanced level.Up till now,we have applied many national patents in wind turbine generator bearings,such as “Slewing bearing for 1.0MW wind turbine generator”,“Slewing bearing for 1.5MW wind turbine generator”,“Self-lubricating cage for slewing bearing”,“Three-row roller combination slewing bearing with long life and high load capacity”,and “Intelligent wind turbine generator bearing based on object net” etc.In particular,the exclusive patent of “Intelligent wind turbine generator bearing based on object net” can realize remote monitoring,fault warning and trouble shooting to wind turbine generator system.

ZYS Service on metal material inspection

We undertake many physical and chemical inspections, including heat treated structure evaluation of bearing parts, the inspections on the depth and hardness of surface deteriorative layer, magnetic particle inspection, retained austenite inspection, contact fatigue life test, etc.

ZYS Si3N4 ceramic ball

Silicon nitride ceramic (Si3N4) is a new kind of bearing material with several good features, it possesses high temperature resistance, corrosion resistance, insulation, non-magnetism, high strength, low density and other features. In the application of bearing, it possesses low friction, low temperature rise, high rigidity, low centrifugal force and other features. It can implement high speed, high precision, high temperature, high rigidity, corrosion resistance and other good features.
Silicon nitride ceramic ball with high precision and high performance  is manufactured by  spray-drying process, near-net-shape, cold isotatic pressing, GPS-HIP combined sintering, compounded abrasive lapping process effectively. The precision grade of it is G5, the materials class is I.

ZYS Automobile bearing

ZYS automobile bearings include tapered roller bearings,cylindrical roller bearings,deep groove ball bearings and angular contact ball bearings,among which clutch bearings and the hub bearings units of the first,second and third generation are mainly used to gear box,axles,transmission system and other parts of all kinds of automobiles.We have conducted thorough research on wheel hub bearings,clutch release bearing,constant velocity cardan joint,gear box bearings and etc.

ZYS Four-Row Cylindrical Roller Bearings

ZYS four-row cylindrical roller bearings are mainly used for heavy machineries, such as mounted on the backup roll of blooming mill, section mill, plate mill, etc. ZYS four-row cylindrical roller bearings are mainly used on the roll necks of hot or cold rolling mills used for forming blooms, plates, and other stock. There are many variations of the bearings: the inner and outer rings can have ribs or not, the inner ring can be in one or two pieces, the bore can be cylindrical or tapered, and other variations.
All four-row cylindrical roller bearings only support radial loads, therefore, they must be used in combination with thrust bearings such as angular contact ball bearings or tapered roller bearings.

ZYS Bearing relevant materials

Holding the advanced manufacturing equipments and testing machines, we have been devoted to the development, manufacture and application of bearing materials, such as ZYS bearing steals, bearing steel balls, ceramic balls, special alloy balls, lubricating oil, grease, plastic cages, cutting tool tips, etc. 

ZYS Bearing manufacturing

ZYS can supply batch production of various bearing manufacturing equipments,like CNC cutting equipments and automatic production line for bearing rings,automatic grinder,superfinishing machine,precision cold rolling machine for bearing rings,semi-automatic multi-purpose grinder for miniature ball bearing rings and other precision manufacturing equipments for bearing.

ZYS Construction machinery

ZYS large-size heavy duty precision bearings are manufactured in our second industry park,which covers 133,333㎡ with total investment of 438 million RMB.
We have a large number of precision and advanced equipments to guarantee the precision and quality of our products,such as CNC vertical lathes,CNC gear shapers,high-speed CNC cutting machines,high-speed CNC drilling machines,CNC hardening machines and imported CNC vertical grinders,etc.
Our slewing bearings have been applied to excavators,boom conveyors,offshore crane,tower crane,floating crane,mobile crane,railway crane and other kinds of cranes.
China’s largest slewing bearings for marine crane was born in ZYS.This bearing is three-row cylindrical roller slewing bearing with OD up to 6.82m and 24 tons.Our unique design and accurate calculation analysis guarantee the safety and reliability of using this bearing in marine crane,which meet the standard of China classification society and are recognized by our customer.

ZYS Rail Transportation bearing

ZYS has been committed to the research and development of bearings for rail transportation for a long time to meet the increasing requirements for rail transportation,such as higher speed,load,reliability and etc.
As China National Quality Supervision and Testing Center for Bearing,we are in charge of bearing quality supervision and inspection arbitration.Therefore,we can conduct simulation test and durability test on our railway bearing testers.
Professional service can greatly improve bearing performance.Therefore,we can supply professional services,like bearing mounting,removal,maintainance,application and etc.to improve the safety of vehicle running.
Our products have passed ISO 9001-2000 Quality Management Certification and GJB/Z9001A-2001 Military Quality Management Certification.

Special precision bearings

We have rich experience and advantages in manufacturing the special bearings, aviation bearings, satellite attitude control momentum wheel, etc. which perform under the special conditions, such as high temperature, low temperature, high speed, heavy duty, vacuum, radiation protection, anti-magnet, sensitiveness, high precision, long life and other special working conditions. Such mature technology has also been widely used in civilian high-tech regions.

ZYS Wind turbine bearings

ZYS has acquired the core designing, manufacturing and testing technique in yaw bearing, pitch bearing, main bearing, gearbox, and generating motor bearing in wind turbine system. We have also cultivated a professional team in bearing design, property analyses, manufacturing and testing. For example, cooperating with Xi'an Jiaotong University, we cultivated Chinese first wind turbine bearing major doctor and exploited specialized integrated design and analysis software that can conduct load spectrum analysis of wind turbine bearing, stress analysis, design and verification of key structural parameters, depth calculation of effective hardened layer and gear and bolt strength check etc. Properties of our wind turbine bearings have reached international advanced level.
   Up till now, we have applied many national patents in wind turbine bearing such as “slewing bearing for 1.0MW wind turbine generator”, “slewing bearing for 1.5MW wind turbine generator”, “self-lubricating cage for slewing bearing”, “long life, high load capacity three row roller slewing bearing”, and “Intelligent wind turbine bearing based on object net” etc. In particular, our exclusive patent of “Intelligent wind turbine generator bearing based on object net” can realize remote monitoring, fault warning and trouble shooting.
 Wind turbine bearing plant is located in our Second Industrial Park covering 133,333 ㎡ and the total investment is 438 million RMB. We have a large batch of precision and advanced equipments like CNC vertical lathes, CNC gear shapers, high-speed CNC cutting machines, high-speed CNC drilling machines, CNC hardening machines and imported CNC vertical grinders etc. We can supply high quality and high precision wind turbine bearings and other slewing bearings.