Ball and Roller Bearings

Bearing Internal Clearance and PreloadTable 8.8 Non-interchangeable radial internal clearance for cylindrical roller bearingNominal boreBearing with cylindrical borediameterdmm C1NA C2NA NA 1 C3NA C4NA C5NAover incl. min max min max min max min max min max min max101810182455510101010101020202020202030303035353545454545454555555565657575243040304050555101215101215252530252530354045404550505565505565607080708095809511050658065801005101015202515202535404535404550607055708075901057590105901101251101301551301501801001201401201401601015152530352530355060655060658090100951051151201351501201351501451601801802002252052302601601802001802002251520203540453540457580907580901101201351251401551651802001651802002002202402502753052853153502252502802502803152525305055605055601001101201001101201501651801701852052152402652152402652652953253303704103804204703153554004503554004505003035455065758595657585951351501701901351501701902002252552852252552853152953303704102953303704103604054555054555105656255205856507201 For bearings with normal clearance, only NA is added to bearing numbers. Ex. NU310NATable 8.9 Axial internal clearance for double row and duplex tapered roller bearings (metric series)Nominal boreContact angle27˚ (e 0.76)diameterdmm C2 CN C3 C4over incl. min max min max min max min max1824302430402525257575957575951251251651251451651701952351701952102202452804050655065802020208585110851101301501752201751952402402603252402803253053504108010012010012014045454515017517515017517526030530528035039039048052039045550050058563014016018016018020060801002002202602002402603403804204004405005405806605206006606607408202002252502252502801201601803003604003003604004805606205606207007408209207208209209001,0201,1402803153554003153554005002002202603004404805606004405005606206807608609207808609801,1001,0201,1201,2801,4001,0201,1201,2801,4401,2601,3801,5801,740Note1: This table applies to bearings contained in the catalog. For information concerning other bearings or bearings using US customary unit, please contact NTN Engineering.2: The correlation of axial internal clearance ("a) and radial internal clearance ("r) is expressed as "r = 0.667 e"a.e: Constant (see dimensions table)3: Bearing series 329X, 330, 322C and 323Cdo not apply to the table.A-62