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Kaydon Bearings Slewing Ring Bearings Catalog 390Section 4 ContentsBearing Tables & RatingsPageNumberGlossary. 46RK Series Four-Point Contact.47-51HS Series Four-Point Contact.52-56HT Series Four-Point Contact.57-61MT Series Four-Point Contact. 63-69Pinions for RK, HS & MT Series. 70XT Series Four-Point Contact. 75-84DT Series Eight-Point Contact. 85-94XR Series Cross Roller. 95-101TR Series Three-Row Roller.103-112Bearing Tables & RatingsKH Series Four-Point Contact. 71-74Section 41-800-514-3066 www.kaydonbearings.com45

Slewing Ring Bearings Catalog 390 Kaydon BearingsGlossary of Abbreviations & SymbolsUsed in This GuideSection 4Bearing Tables & RatingsBEARING AND GEAR DIMENSIONSPINION ssure angle of gear teeth b1Face widthinb2Face width of gear teethinD1Pitch diameterinBiSize of hole in inner ringinDi1Stock boreinBoSize of hole in outer ringinDo1Outside diameterinD2Pitch diameter of gearinDr1Diameter of hubindiInside diameter of inner ringinL1Length of pinioninDiInternal diameter on outer ringinPdDiametral pitch-DoOutside diameter of outer ringinwSquare key size, nominalindoExternal diameter on inner ringinx1Addendum modification coefficient-DpDiameter of bearing racewayinz1Number of teeth-drInternal diameter on inner ringinDrExternal diameter on outer ringinSYMBOLFEATUREUNITSDwDiameter of rolling elementFull depth involute spur gear (ref. ANSIB6.1-1968, R1974 or ISO 53:1998)Fellows stub involute spur gear(ref. Machinery’s Handbook, 18th Edition)Height of overall bearing assemblyinfaApplication Service Factor--FaForce parallel to bearing axis of rotationlbsFrForce perpendicular to bearing axisof rotationlbsMkTilting moment about bearing centerlineft-lbsNRotational speedrpmFriction coefficient-FDFSHinHiHeight of inner ringinHoHeight of outer ringinLiBolt circle in inner ringinLoBolt circle in outer ringinmmmniModule of gear teeth 25.4/PdNumber of lubricationnipples/fittings per planeNumber holes in inner ringnoNumber holes in outer ring-PdDiametral pitchStub involute spur gear(ref. ASA B6.1-1932)Addendum modification coefficient ofgear teeth, (“ ” sign increases tooththickness at D2 and “-“ sign decreasestooth thickness at D2)Number of gear tLinear unit of measurementfootft-lbsUnits of torque or momentfoot poundsinLinear unit of measurementinchlbsUnits of force or weightpoundsmmLinear unit of measurement (SI)millimeterWarning--REFERENCES-AGMABEARING AND GEAR PROPERTIESAmerican Gear Manufacturers AssociationANSIAmerican National Standards InstituteSYMBOLFEATUREUNITSASTMAmerican Society for Testing and MaterialsCrmMoment load ratingft-lbsDINDeutsches Institut für NormungFzMaximum allowable gear tooth loadlbsISOInternational Standards OrganizationGWeight of bearing assemblyFriction torque of bearing, installed andsubjected to loadslbsNLGINational Lubricating Grease Instituteft-lbsSAESociety of Automotive EngineersMw46APPLICATION DATAwww.kaydonbearings.com 1-800-514-3066

Kaydon Bearings Slewing Ring Bearings Catalog 390RK SeriesIntroductionRK Series bearings have a flanged cross-section on one or both rings andrange in size from 20 – 47 inches OD (500 – 1200 mm). The flanged designreduces weight and provides the equipment designer greater flexibility forconfiguration of adjacent mounting structures and bolting arrangements. RKSeries bearings are well suited for many applications where a large diameterand lighter weight are predominant factors in selection of a bearing.Design FeaturesRK Series bearings are offered in non-geared, internally geared, and externallygeared configurations for maximum design flexibility. The gears are InvoluteStub designs with 20 pressure angles, manufactured to AGMA Class Q5quality and .005 to .015 inches allowance for backlash.Section 4All models feature four fittings for lubrication, spaced 90 degrees apart. Onnon-geared and internal geared models, they are located on the outercounterbore diameter (Dr). On external geared models, they are located onthe inner counterbore diameter (dr).Bearing Tables & RatingsThe internal configuration is a deep-groove gothic arch raceway, whichprovides four points of contact with the balls, enabling the bearing tosimultaneously carry radial, axial, and moment loads. The use of spacer ballsalternated with load balls allows for lower rotational torque and superiorperformance in applications involving oscillatory movement. Integral faceriding seals are provided to assist in the exclusion of contaminants.AvailabilityRK Series bearings are generally available from stock, and mating pinions for thegeared versions are also generally available. See page 70 for mating pinions.ApplicationsRK Series bearings have been used successfully in a variety of light to mediumduty applications including: Small cranes, booms, and lifts Industrial positioners and rotary tables Chute swivels Stretch wrapping machines Bottle filling machines Conveyors and related material handling equipment Rotating displays1-800-514-3066 www.kaydonbearings.com47

Slewing Ring Bearings Catalog 390 Kaydon BearingsRK SeriesNo GearSection 4Bearing Tables & RatingsOUTLINE DIMENSIONS AND WEIGHTKaydon 75044.65043.00042.92041.270153Tolerances .040 .040 .000-.080Ref.Ref. .080-.000MOUNTING HOLESKaydon P/NOUTER RINGLo(in)GEAR DATAINV. STUB, a 20 INNER —75,500Not quite what you need? Contact Kaydon to inquire about custom features such as different mounting holes, internal clearance, pilot diameters, drivearrangements, or Endurakote plating.48www.kaydonbearings.com 1-800-514-3066

Kaydon Bearings Slewing Ring Bearings Catalog 390RK SeriesInternal GearOUTLINE DIMENSIONS AND 2.920—188Tolerances .040 .030-.000 .000-.080Ref.Ref.Ref.MOUNTING HOLESKaydon P/NOUTER RINGLono(in)GEAR DATAINV. STUB, a 20 INNER RINGLini(in)(lbs)D2Pdz2(in)FZSection 4DoBearing Tables & RatingsKaydon 43N1Z46.0001841.5002439.6673119834075,500Not quite what you need? Contact Kaydon to inquire about custom features such as different mounting holes, internal clearance, pilot diameters, drivearrangements, or Endurakote plating.1-800-514-3066 www.kaydonbearings.com49

Slewing Ring Bearings Catalog 390 Kaydon BearingsRK SeriesSection 4Bearing Tables & RatingsExternal GearOUTLINE DIMENSIONS AND WEIGHTKaydon 041.270189Tolerances .000-.030 .040Ref.Ref.Ref. .080-.000MOUNTING HOLESKaydon P/NOUTER RINGLono(in)GEAR DATAINV. STUB, a 20 INNER 8802446.33331397,68075,500Not quite what you need? Contact Kaydon to inquire about custom features such as different mounting holes, internal clearance, pilot diameters, drivearrangements, or Endurakote plating.50www.kaydonbearings.com 1-800-514-3066

Kaydon Bearings Slewing Ring Bearings Catalog 390RK Series Load Charts90Thrust (lbs x 1,000)706050403020A001020B30C40D50Moment (ft-lbs x 1,000)EF60G7080Section 410Bearing Tables & Ratings(A) RK6-16(B) RK6-22(C) RK6-25(D) RK6-29(E) RK6-33(F) RK6-37(G) RK6-4380 ating Charts are only applicable for operating conditions defined as NORMAL OPERATION in Section 2 and when installed and maintained asRdefined in Section 3 of this catalog. Bearing diameter increase does not necessarily ensure bearing rating increase due to variations in rollingelements, ring section, and fastener complements. For information concerning the basis for development of Rating Charts refer to the LOADRATING paragraph in Section 2.1-800-514-3066 www.kaydonbearings.com51

Slewing Ring Bearings Catalog 390 Kaydon BearingsHS SeriesIntroductionHS Series slewing ring bearings are similar in size to the RK Series, but haverectangular cross sections, which allows for alternate hole patterns as well asimproved stiffness and more capacity. They are available in sizes from 20 – 47inches OD (500 – 1200 mm) with a standard cross section.Design FeaturesThe internal configuration consists of deep groove gothic arch raceways andmaximum ball complement. This results in a four-point contact design whichprovides exceptional moment, thrust, and radial load capacities. Integral sealsare provided to assist in the exclusion of contaminants.Geared rings have tapped holes, while non-geared rings have through holes.Bearing Tables & RatingsHS Series bearings are available in internal geared, external geared, and nongeared configurations. The gears are Involute Stub designs with 20 pressureangles, manufactured to AGMA Class Q5 and .015 to .025 inches allowance forbacklash.Section 4All models feature two fittings for lubrication, spaced 180 degrees apart. Onnon-geared and internal geared models, the fittings are located on the outerdiameter (Do). On the external geared models, the fittings are located on theinner diameter (di).AvailabilityForgings for HS Series bearings are stocked, and the finished bearings canusually be delivered promptly. Mating pinions are also generally available andcan be found on page 70.ApplicationsHS Series bearings have been used successfully in a variety of medium toheavy duty applications including: Cranes Aerial lifts Digger derricks Chute swivels Lift truck rotators Industrial turntable52www.kaydonbearings.com 1-800-514-3066

Kaydon Bearings Slewing Ring Bearings Catalog 390HS SeriesNo GearKaydon P/NGMOUNTING HOLESOUTER 9002040.25024————139,9001-800-514-3066 www.kaydonbearings.comSection 4DoAPPROX.noGEAR DATAINV. STUB, a 20 INNER RINGBearing Tables & RatingsOUTLINE DIMENSIONSAND WEIGHT53

Slewing Ring Bearings Catalog 390 Kaydon BearingsHS SeriesSection 4Bearing Tables & RatingsInternal GearMOUNTING HOLESOUTLINE DIMENSIONSAND WEIGHTKaydon P/NOUTER AR DATAINV. STUB, a 20 INNER 31197,434139,900Not quite what you need? Contact Kaydon to inquire about custom features such as different mounting holes, internal clearance, pilot diameters, drivearrangements, or Endurakote plating.54www.kaydonbearings.com 1-800-514-3066

Kaydon Bearings Slewing Ring Bearings Catalog 390HS SeriesExternal GearKaydon P/NGMOUNTING HOLESOUTER 0Section 4DoAPPROX.noGEAR DATAINV. STUB, a 20 INNER RINGBearing Tables & RatingsOUTLINE DIMENSIONSAND WEIGHTNot quite what you need? Contact Kaydon to inquire about custom features such as different mounting holes, internal clearance, pilot diameters, drivearrangements, or Endurakote plating.1-800-514-3066 www.kaydonbearings.com55

Slewing Ring Bearings Catalog 390 Kaydon BearingsHS Series Load Chart140(A) HS6-016(B) HS6-021(C) HS6-025(D) HS6-029(E) HS6-033(F) HS6-037(G) HS6-043130120110Thrust (lbs x 1,000)Bearing Tables & Ratings10090807060504030Section 42010A0010203040BCDEFG50 60 70 80 90 100 110 120 130 140 150Moment (ft-lbs x 1,000) ating Charts are only applicable for operating conditions defined as NORMAL OPERATION in Section 2 and when installed and maintained asRdefined in Section 3 of this catalog. Bearing diameter increase does not necessarily ensure bearing rating increase due to variations in rollingelements, ring section, and fastener complements. For information concerning the basis for development of Rating Charts refer to the LOADRATING paragraph in Section 2.Not quite what you need? Contact Kaydon to inquire about custom features such as different mounting holes, internal clearance, pilot diameters, drivearrangements, or Endurakote plating.56www.kaydonbearings.com 1-800-514-3066