75mm to 180mm SPLIT TAPERED BEARINGS

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Static ratingThe static load rating is defined as the load at which a contactstress of 4GPa occurs at the centre of the most heavilyloaded contact, and at which a permanent deformation of0.0001 times the roller diameter is sustained at the locationof the contact. This has been found to not cause significantdeterioration in bearing performance under typical operatingconditions.The suitability of a bearing for sustaining a specified static (orinstantaneous maximum) load is determined as follows:where:C or ≥ S o x P oC orS oP o= static radial capacity= static safety factor= F r + Y o F a where calculation factor Y o isgiven in the product data tables.Standard shaft design3Temperature CharacteristicsStandard bearings can operate at between -20°C and 100°C.Operation outside this range is possible but may requirespecial treatment of bearings parts – please contact ourtechnical department.The difference in temperature between the shaft and housingshould not exceed 40°C.Standard shaft design with ATL seals(where applicable)Mounting ArrangementsGeneral arrangementsIn order to provide accurate and positive location of theinner race on the shaft, these bearings are generally mountedon a recessed journal, and the standard cartridges and sealsare designed to suit this arrangement. As the bearings arecompletely split to the shaft, there is no need to provideseparate collars to create this recess – it can be machineddirectly into a solid shaft. Also, there is no need to design thesurrounding parts to allow for axial assembly of the bearingand it can be fitted between integral shaft flanges, cranks,mounted parts and assemblies etc.Usually, the shaft is carried through the end of the cartridgeat the diameter of the journal abutment, with the sealsoperating on this larger diameter. If aluminium triple labyrinth(ATL) seals are to be used, on some sizes the diameter of thecartridge end bore would be excessive with this arrangement,so the shaft has only narrow shoulders abutting the inner race,with the seals operating on a diameter equal to the journaldiameter.Shaft design for ATL sealswhere standard not applicableIf the journal and the portions of the shaft under the sealsare required to be of the same diameter and integral abuttingshoulders are not possible, alternatives are to use spirallywound retaining rings mounted in grooves in the shaft, orspecial split location collars (usually requiring special cartridgesto accommodate them). It may be possible to locate theinner race on the shaft using only the clamping effort providedby the inner race clamping rings, without auxiliary locationfeatures, but this should only be done in consultation withCooper technical department.
75mm to 180mmSplit tapered BEARINGsUse of retaining ringsto locate inner raceAll arrangements not conforming to the standard designsillustrated in the product data tables will require confirmationof dimensions and part codes for the cartridges and seals.Use of split collarsto locate inner raceAlternative abutment diameters can be accommodated usingalternative seals and housing end bores. If larger shaft filletradii are required, we can supply bearings with extra largechamfers to the inner race bores.Shaft toleranceShaft tolerances are as illustrated opposite. The tolerance onroundness and parallelism of the journal is IT6.A tolerance of h9 is applicable to the seal seating area evenwhen it is the same nominal diameter as the journal.4diameterover 50 80 120 180(mm)Toleranceband (toBS 4500)up to and incl. 80 120 180 250h6+0 +0 +0 +0-19 -22 -25 -29h9+0 +0 +0 +0-74 -87 -100 -115C +0.340+0.120d (h6)A (h9)IT6 19 22 25 29max. shaft fillet radii:75mm bore size: 1.2mmall others: 2.3mmStandard shaft design
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Page 9 and 10: cartridge dataLL1L1L2Jw (max.)GAdAT
Page 11 and 12: FLANGESR PCD,holes equally spacedPL
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Page 16: cUSTomer SerVice cenTreSGermanyCoop

75mm to 180mm SPLIT TAPERED BEARINGS

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