Slewing Bearing for Wind Power Industry

Basic Info.Model NO.leeCertificationISO9001:2008, ISO9001:2000FeatureCorrosion Resistant, Antimagnetic, Low Temperature, High Temperature, High SpeedStyleWithout Outer RingRows NumberMultipleLoad DirectionRadial BearingMaterialGcr15&Chrom SteelWeight2.5Precision RatingP0p6p5p4p2ApplicationMachinery Repair ShopsCertificateISO9001:2015OEMAcceptTrademarkBDRTransport PackageWooden PackSpecification114.3mmOriginChinaHS Code8482103000Product DescriptionSupply AbilitySupply Ability2000 Piece/Pieces per MonthPort crane four point contact slewing ring bearing 011.25.0315.001 360x200x60mmProduct Description Ø  Historyl  Headquarter founded in the 1980s as a state-owned enterprise, reformed to be one limited liability company in 2005.l  Start to produce slewing ring in 1995, have own brand name for slewing ring.l  Four subsidiaries belong to the headquarter: Ring mill plant, Slewing ring plant, Wheel hub plant, Beijing Titanhorse International Trade Dept.Ø  Company Scalel  Total area: 100,000sq.ml  Factory: 60,000sq.ml  Office: 7,000sq.ml  700 employeesl  Lines of product: forged raw rings (The raw material of slewing ring), Slewing rings, Wheel hubØ  Production Scalel  Slewing ring 50,000pcs/monthl  Ring/flange  8,000pcs/monthl  Wheel hub   20,000pcs/monthØ  Unique Advantagel  6 series of slewing ring, the raceway diameter ranges from 200-5,000mml  Germany 5S standard site management and QC management engineering standardsl  ISO9001:2008, OHSAS18001:1999, ISO14001:2004 Operation & Maintanence Suitable lubrication is necessary for durability of raceway and gear. Lubricating grease improves capability and service life of slewing bearing, while working condition, e.g. load, temperature, speed, and vibration, determines lubricant selection.   Characteristics of recommended lubricant for slewing bearing:  ²  Lithium base grease²  Minimum viscosity of base oil: 150 mm2/S²  NLGI consistency grade: 2²  Anti-friction and extreme pressure additive ²  Working temperature: -300 Ca+1200 C²  Four-ball test: Clinkering load STMD 2596 (NT24)>300²  Maximum NDM value (revolving speed x raceway center diameter)  For ball slewing bearing=60000  For pin roller slewing bearing=30000Lubricating grease compatibility table  According to our experience, the lubricating greases listed in the following table are compatible with each other and with all parts of slewing bearing. Any other grease which is deemed compatible with any of the lubricating greases recommended by the Company is usable. However, molybdenum-containing disulphide MOS2 is strictly prohibited. Grease for raceway of slewing bearing Lubricating grease designation Grease for gear Aralub HLP2ARALAralub LFZ1  Rhus L 474/2MOTUL/bECHEMBerulit GA 400  Energrease LS-EP2BPEnergolwRL/GR 154 GS  Grease LMXCASTROL   Epexa2/Epexelf2ELFCardrexa DC1  Beacon EP2ESSOSurret Fluid NX  Mobilux EP2MOBILMobilgear OGL 007  Retina EP2-Alvania EPLF2SHELLMalleus GL 205  Multis EP2-Lical EP2TOTAL FINA ELFCeran AD          Removal of Common Faults Difficult turning of slewing bearingEvery slewing bearing goes through strict inspection and test run before being released from plant, so all of them are acceptable products. As the slewing bearing has pre-tightening force on its sealing face and frictional force of the sealing face should be overcome for turning, it's normal that certain starting moment is needed when it is turned.In case of clamping stagnation in turning, the following method should be taken to remove the trouble:   Case Cause analysis Troubleshooting methodsInflexible idling of new productThe slewing bearing has been stored for long time (e.g. over a half year) or the ambient temperature is low, which results in less liquidity of the grease inside, leading to inflexible operation. This case is prominent in cold regions and in winter.  After force is exerted, if it works well without any abnormal sound, it can serve for normal serve, but new grease should be filled until it is oozed from the seal.If operation is accompanied with any abnormal sound, check whether there is any damage caused during transport or storage and feedback the information to our after-sale service department for a solution.  Inflexible  operation after installationThe mounting surface of the main machine does not match well with that of the slewing bearing, resulting in that after installation, axial clearance of the slewing bearing can't compensate for deformation of the slewing bearing, raceway of the slewing bearing is distorted, and the roller moves with difficulty in raceway (sometimes with abnormal sound). Rework mounting surface of the main machine to make it in compliance with the requirements; or treat the surface by filling in plastic or partial washer. If flatness is still unacceptable after completion of surface treatment, try to exchange for a slewing bearing with larger clearance.      Bad gear engagement is caused by failure to adjust gear backlash according to radial top point of gear pitch circle (th