Slewing Ring Bearing for Excavator Komatsu

Basic Info.Model NO.PC220-5Standard or NonstandardStandardFeatureHigh Speed, Vacuum, Antimagnetic, Cold-Resistant, Corrosion-Resistant, Heat-Resistant, Four Point ContactSealing GlandSealed On Both SidesRolling-Element NumberMultiple-ColumnRoller TypeStraight RacewayMaterialBearing SteelTypeExternal GearServiceOEM Customized ServicesBore Size10 - 5000 mmOutside Diameter50 - 6000 mmHardness229-269h (Slewing Bearing)Detection100% InspectionSeals TypeOpenCertificateISO9001:2008/SGSHeat TreatmentQuenching and TemperingFinishing WayRaceway Induction QuenchingOperating Temperature-40°c to +50°cGear OptionsExternal Gear OnlyPlace of OriginChina (Mainland)BearingTadano Crane Slewing BearingWarrantyOne YearStockRichTrademarkEVONTransport PackageFiber Wooden CaseSpecification1302*1084*110mmOriginLuoyangHS Code8431499000Product DescriptionProduct features: slewing bearing for excavator Slewing Ring Identification   Identifying slewing rings can sometimes be hampered by part worn serial/part numbers or OEM only references. In order to help identify your slewing ring, we recommend the following:   1. Provide the machine model on which the bearing fits.2.Provide a quick drawing giving with the following dimensions noted as accurately as possible.2.1-Inner ring and outer ring diameters2.2-Inner and outer flange diameters and heights2.3-The height of the inner ring, outer ring and total assembled height2.4The PCD of mounting holes in the inner and outer rings. Also note hole size, through or blind and or taped2.5-Gear detail including number of teeth, approx tooth pitch, tooth height and depth + profile if possible.   Product:    Single-row 4-point contact ball series.           Single-row crossed roller series.           Double-row ball series.          Three-row roller series.          Roller and ball combination series.            Light type profile slewing bearing.          Quenching slewing ring bearingTechnical parameters:  No  TypeOD(mm)ID(mm)OVERALL H(mm)OH(mm)IH(mm)O Hole(mm)I ole(mm)Teeth No(mm)1PC220-513021084110879026-M2436-M201102PC220-313031084104819026-M2436-M20110Advantages:and can withstand the larger axial and radial load. Single row cross roller slewing bearing, is composed of two seat, compact structure, high precision, small assembly clearance, for installation accuracy requirement is high, the roller of 1:1 cross arranged, can bear axial force at the same time, the overturning moment and large radial force, is widely used in transportation, engineering machinery and military products. Slewing ring bearing solutions are ideal for optimal economy in a given envelope dimension; for heavy-duty applications requiring significant load-carrying capacity; for designs where precise positioning is critical; and for the unique requirements of wind turbines.A turret bearing or slewing ring is a rotational rolling-element bearing or plain bearing that typically supports a heavy but slow-turning or slow-oscillating load, often a horizontal platform such as a conventional crane, a swing yarder, or the wind-facing platform of a horizontal-axis windmill. (To "slew" means to turn without change of place.)Compared to other rolling-element bearings, slewing bearings are thin in section and are often made in diameters of a metre or more; the slewing bearings on the Falkirk Wheel are 4 metre diameter and fit over a 3.5 metre axle. Slewing bearings resemble oversize aircraft control surface bearings.Slewing bearings often use two rows of rolling elements. They often use three race elements, such as an inner ring and two outer ring "halves" that clamp together axially.Slewing bearings are often made with gear teeth integral with the inner or outer race, used to drive the platform relative to the base.As for other bearings that reciprocate, rather than rotating continuously, lubrication can be difficult. The oil wedge built up in a continuously rotating bearing is disrupted by the stop start motion of slewing. Instead, a hydrostatic bearing with pumped oil flow may be used.Parameter Of Anti-Friction Crane Slew BearingTonnage of Crawler CraneSlewing Bearing Model30 TonSingle-row ball, Center diameter of raceway: Approx 1200mm, Ball diameter: 40mm40 TonSingle-row ball, Center diameter of raceway: Approx 1400mm, Ball diameter: 50mm50 TonSingle-row ball, Center diameter of raceway: Approx 1400mm, Ball diameter: 60mm70 TonSingle-row ball, Center diameter of raceway: 1500-1600mm, Ball diameter: 50/60mm75-85 TonSingle-row ball, Center diameter of raceway: Approx 1600mm, Ball diameter: 50/60mm90 TonDouble-row ball, Center diameter of raceway: Approx 1800mm, Ball diameter: 28mm100 TonDouble-row ball, Center diameter of raceway: Approx 2100mm, Ball diameter: 60mm125 TonDouble-row ball, Center diameter of raceway: Approx 1800mm, Ball diameter: 50mm130 TonDouble-row ball, Center diameter of raceway: Approx 2000mm, Ball diameter: 50mm150 TonDouble-row ball, Center diameter of raceway: 2000-2100mm, Ball diameter: 35/50mm160 TonDouble-row b