SeriesInner ringDescriptionWithWithoutNK YesLight seriesNKS YesHeavy seriesRNA 49 YesSizes same as 49 seriesRNA 69 YesSizes same as 69 series, double row(single row to RNA6906)RNA 48 YesSizes same as 48 seriesNKIYes Light seriesNKISYes Heavy seriesNA 49Yes Sizes same as 49 seriesNA 69Yes Sizes same as 69 series, double row(single row to RNA6906)NA 48Yes Sizes same as 48 series

Shaft 

Diameter

Bearing Designation

Mass 

Approx

Borndary 

Dimensions

Basic Load Rating

Limiting 

Speed

CrCordFDBDynamicStaticOilmmSeriesgmmNrpmNKINKISNA49NA698--NKIS8----4681425161240011300215009NKI9/12------14.69121912620070022170010NKI10/16------27.31014221698081050019650----NA4900--21101422138006900023700------NA690038.4101422228281116122370012----NA4901--25.1121624135047635220000NKI12/20------3912162420140001840021000------NA690144.512162422116471705219100--NKIS12----581218301616000170001910015NKI15/16------381519271688471285318800NKI15/20------45.715192720123471905318800----NA4902--32152028136447905317000------NA690261.615202823131002090020000--NKIS15----901522352023500240001700017NKI17/16------41.417212916130001820017000----NA4903--32.81722301370101001016700------NA690368.21722302314400249001620020NKI20/16------48.520243216108001700014000----NA4904--70.220253717119121659416200--NKIS20----1192028422026500355001400022NKI22/16------502225341687211534016200----NA49/22--7622283917129961917514360------NA69/221302228393021375357501436025NKI25/30------11525293830315005600014000----NA4905--7625304217134522047513832------NA690513825304230193003175013832--NKIS25----1602532472232000550001250028----NA49/28--90.728324517139002010013832------NA69/281702832453022400368501383232NKI32/20------10132354520138512690012382----NA49/32--15032405220190003260011134------NA69/322723240523625500685001113435NKI35/30------16535405030222005135011134----NA4907--15135425520198004150011134------NA690730135425536260006050011134--NKIS35----210354358223300056000950040NKI40/20------12440455520220004800010127NKI40/30------18440455530350008600010127----NA4908--1234048622231036638738567------NA69084014048624064000112000856742NKI42/20------138424757202600052500950045NKI45/25------2184550622536000700008567NKI45/35------28945506235415001020008567----NA4909--2604550682237000695008052------NA690947945506840615001235008052--NKIS45----306455572224300071000750050NKI50/25------2625055682532000780007890----NA4910--2645058722241000720007526------NA691045750587240680001350007526--NKIS50----510506080286000095000720055NKI55/35------35755607235480001268007256----NA4911--3865563802550600965807156------NA69117605563804582560172000715660NKI60/25------3886068822535500850007156----NA4912--4126068852552800110506022------NA691279860688545885001860006022--NKIS60----5506070902865000110000630065 NA4913--43565729025575001105006022--NA69138216572904587600194500602270NA4914--712708010030790001540005111--NA6914132670801005412100263000511175NA4915--765758510530820001580005111--NA6915142975851055412800272000511180NA4916--870809011030810001705005111--NA69161510809011054130500280600500085NA4917--125085100120351110002370004600--NA691722008510012063166000400000460090NA4918--131290105125351140002500004400--NA691823109010512563172000425000440095NA4919--137195110130351160002600004200--NA6919250095110130631740004400004200100NA4920--1900100115140401200002740004000110NA4922--2070110125150401320002900003700--NA4822108011012014030940002160003900120NA4924--2860120135165451810003900003400--NA4824117012013015030990002390003600130NA4926--3900130150180502030004700003100--NA48261810130145165351180003100003200140NA4928--4150140160190502090005000002900--NA48281920140155175351200003250003000