Luoyang Huigong Bearing Technology Co., Ltd.

The double row cylindrical roller bearing is designed as separable type bearing, which makes it easy to be mounted and dismounted.It is produced in two structures with cylindrical bore and tapered bore (suffix K), two designs NNU and NN. The NN design is consist of one inner ring with two ribs and one outer ring without ribs. The NNU design is consist of one inner ring without ribs and one outer ring with two ribs. When the bearing is installed, the radial clearance of tapered bore structure is allowed to adjust. The double row cylindrical roller can be used as a non-locating bearing since a certain axial displacement between the shaft and bearing housing is allowed. We provide the double row cylindrical roller bearing that has high precision and great stiffness, which is usually used as main shaft bearing for precision machine tools.BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax200280602.1420815NN 39403282940-259216221263--210.6280802.1484960NN 4940K/W204182940Y-259211222264269-214.1280802.15701220NN 49404282940-259211222264269-215.3280802.15701220NNU 49404482940225-211222-269228215.3310822.16551170NN 30403282140-282211-285299-222.7310822.16551170NNU 30403482140232-211223-293237222.73101092.18901730NN 40404282140-282216225293--230.4220300602.1440895NN 39443282944-279236241-283-211.4300802.16001330NN 49444282944-279236242-283-216.6300802.16001330NNU 49444482944245-231242-289249216.63409038151480NN 30443282144-310233-313327-2.529.63409038151480NNU 30443482144254-230-313327-2.530340118311902400NN 40444282144-310233-313327-2.539.8370120410501810NN 31443282744-331241--346-351.9370120410501810NNU 31443482744263-241--346268352.3BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax240300601.14051030NN 48484282848-283248255287290-19.77300601.1358930NNU4848-259-248255-29026319.9320602.1460975NN 39483282948-300251262-309-212.2320802.16251450NN 49484282948-300251262-309-217.9320802.16251450NNU 49484482948263-251262-3092692183609238551600NN 30483282148-330253-333347-2.532.73609238551600NNU 30483482148274-253266-3472802.532.7360118312402600NN 40484282148-330253266333347-2.539.3360118312402600NNU 40484482148274-253266-3472812.542.7400128411702040NN 31483282748-358256-362384-364.2400160418803530NNU 41484482748282-256282-384291385260360752.16701380NN 39523282952-335271288-349-221.43601002.17111540NN 4952K4182952-335271288-349-229.23601002.19352100NN 49524282952-335271288-349-228.33601002.19352100NNU 49524482952292-271288-349296231.1BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax26040010449691810NN 3052K3182152-364276-367384-347.140010449691810NN 30523282152-364276-367384-348.5400140415503250NN 40524282152-364276-369384-359.7400140415503250NNU 40524482152300-276289-384299365440144414802660NN 31523282752-393276-415424-389.1440180422004000NNU41524482752306-276300-4243103113280350691.14451160NN 48564282856-329287.5--340-115.33506924571200NNU4856K-303-287.5298-340307115.5380752.16951460NN 39563282956-355291--369-222.73801002.19602230NN 49564284956-355291--369-232.93801002.19602230NNU 49564482956312-291308-369316233420106410201950NN 3056K3182156-384296-387404-349.1420106410201950NN 30563282156-384296-387404-349.9420106410802080NNU3056-320-300--440326351.4460146515202790NN 31563282756-413300-416440-495.7BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax300380802.16901760NNU 48604482860324-308320-369330221.7420118312302870NN 49604282960-388314335-398-2.551.6420118312302870NNU 49604482960339-314335-4063432.551.9460118411802250NN 30603282160-418316-421444-371.7460118411802250NN 3060K3182160-418316-421444-369.6460160419204100NN4060--418316--440-397.6500160517603150NN 31603282760-448320-450480-4125500160517603150NNU 31603482760358-320--4803654126320400802.17001840NNU 48644482864346-328340-389350222.8440118312603050NN 49644282964-408334355-427-2.550.2440118312603050NN 4964K4182964-408334355-427-2.552440118312603050NNU 49644482964359-334355-4263632.554.9480121413502670NN 30643282164-438336-442464-376.6480121413502670NNU 30643482164366-336353442464-376.9480160419604300NNU 40644482164367-336353-4643643103BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax320540176520903750NNU 31643482764384-340379-52038941543404609039052020NN 39683282968-428353375-447-2.542.9460118310402450NN 4968K4182968-428353375-447-2.553.8460118313503400NN 49684282968-428353375-447-2.552.1460118313503400NNU 49684482968379-354375-4463832.557.8520133515603020NN 3068K3182168-473360-477500-4101520133515603020NN 30683282168-473360-477500-4104520133515603020NNU30683482168387-360--5004004104520180524205350NNU 40684482168385-360377-50038941413604809039302130NN 39723282972-448373-453467-2.544.9480118313903550NNU 49724482972399-374395-4664032.560.6540134516303240NN 30723282172-493380-497520-4106540134516303240NN 3072K3182172-493380-497520-4106540134516303240NNU 30723482172413-380--5204204108540180525305450NN 40723282172-496380397-520-4132BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax420620150521304450NN 30843282184-568440-574600-4154620150521304450NNU 30843482184478-440--6004744155620200531507100NN 40844282184-571440-574600-4189620200534007850NNU 40844482184469-440460-6004744209700224635506800NNU 31843482784501-444--66050853474405401002.19502790NNU 48884482888470-448464-529476249.5650157623604900NN 30883282188-596466-600624-5177650157623604900NNU 30883482188500-466--6245075178720226635006800NN 31883282788-649466--680-5357460580118312003600NNU48924482892497-474489-5665022.576620118416103700NN 39923282992-578476504-604-394.5620160424006200NNU 49924482992510-476504-6045153140680163624705070NN 3092K3182192-624484-627654-5204680163624705070NN 30923282192-624484-627654-5204480650170526907000NN 49964282996-607500--630-4164BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax480700165626005550NN 30963282196-643506-648674-5211700218643008600NNU40964482196533-506523-67453852737902487.540508100NN 31963282796-708512-718758-6447500670170527207200NNU 49/50044829/500554-520548-6505594171720167625805600NN 30/50032821/500-664526-668694-5205720167625805600NNU 30/50034821/500563-526--6945705220530710136520404900NN 39/53032829/530-663550582-690-4149710180529007050NNU 49/53044829/530588-550582-6905934202780185632006900NN 30/53032821/530-715556-720754-5296560750140523704860NN 39/56032829/530-705576-711735-4188750190532508700NNU 49/56044829/560623-580619-7306284239780180824006400NN 6/5602872/560-725580-732765-5266820195824606560NN 30/560K31821/560-756586-761794-53418202586410010600NN 40/56042821/560-745586--794-54728202586572013100NNU 40/56044821/560626-586615-7946325420BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax5609202807.5685013700NNU 31/56034827/560650-630---65567386008002005385010500NNU 49/60044829/600666-620662-7806724284800200534507180NN 49/600K41829/600-755620--780-4257870200634207785NN 30/60032821/600-803626-808844-53558702726613814040NNU 40/60044821/600664-626653-84467055309803757.5891018990NNU 41/60044827/600699-633682-94770661100630780150422907000NNU 48/63044828/630676-646667-76467631608502186420011400NN 49/63042829/630-793656--824-53288502186400010800NNU 49/63044829/630704-656699-82471053569202127.538608820NN 30/63032821/630-845663-851887-64309202907.5688515750NNU 40/63044821/630699-663688-887705663510304007.5990021600NNU 41/63044827/630734-663716-997740613306709002306445012330NN 49/67042829/670-838696--874-54199002306495013100NNU 49/67044829/670738-696732-87474454309802307.5462010260NN 30/670K31821/670-901703-907947-6597BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax6709803087.5757817640NNU 40/67044821/670744-703733-947750676510904127.51089022950NNU 41/67044827/670774-703756-105778061500710870160426408350NNU 48/71044828/710759-726750-85475932039502436485013770NNU49/71044829/710782-736776-924788548010302367.5514811880NN 30/71032821/710-951743-957997-659010303157.5841519440NNU 40/71044821/710784-743772-997790685011504389.51206025650NNU 41/71044827/710820-750800-111082681790750920170530709180NN 48/75042828/750-879770-887904-424010002506495014400NNU 49/75044829/750831-776824-974837554010902507.5633614400NN 30/75032821/750-1007783-10111057-670510903357.5918021600NNU 40/75044821/750830-783816-1057836692512204759.51449031950NNU 41/75044827/750871-790850-11808778223080010602586524715300NNU 49/80044829/800884-826876-1034890561511502587.5702916200NN 30/80032821/800-1065833-10711117-679011503457.5972023400NNU 40/80044821/800885-833871-111789161140BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax80012804759.51485032850NNU 41/80044827/800921-840900-12409288239085010301805340011400NNU48/85044828/850905-888---912431011202726534616200NNU 49/85044829/850939-876930-1094946571512202727.5712816740NN 30/85032821/850-1130883-11361187-694012203657.51053025650NNU 40/85044821/850940-883923-118794761340136050061908040500NNU 41/85044827/850976-897935-13349635290090011802806594018000NNU 49/90044829/900986-926977-1154993580512802807.5742518000NN 30/90032821/900-1185933-11911257-6105012803757.51152028350NNU 40/90044821/900990-933963-125799761500142051561980042750NNU 41/90044827/9001032-9471008-139410395318095012503007.5663320160NNU 49/95044829/9501046-9831036-12171053696013603007.5821720160NN 30/95032821/950-1255983-12631327-6130013604127.51278031950NNU 40/95044821/9501050-9831033-1327105761900950150054562295051300NNU 41/95044827/9501092-9971068-1474109953830100013203157.5772223400NNU 49/100044829/10001103-10331096-1287111061250BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax100013203157.5858025200NN49/100042829/1000-12381033-12491287-6120014203087.5909022050NN 30/100032821/1000-13161033-13241387-6140014204127.51386034200NNU 40/100044821/10001101-10331084-1387110862000158058062475055800NNU 41/100044827/10001154-10471128-1474116154270106014003357.5945027450NNU 49/106044829/10601160-10931150-136711676135015003259.5990024750NN 30/106032821/1060-13911100-13991460-8165016606007.52727062550NNU 41/106044827/10601214-11161189-1627122165070112014603357.5945028350NNU 49/112044829/11201220-11531210-142712276145017506307.53024068850NNU 41/112044827/11201279-11761253-1717128665600118015403557.51071032400NNU 49/118044829/11801285-12131270-150712936165018506707.53321076500NNU 41/118044827/11801350-12271320-1817135867200125019507107.53762088200NNU 41/125044827/12501426-12971396-1917143468000132017204007.51242038250NNU 49/132044829/13201440-13531420-168714486310017204007.51380042500NN49/132042829/1320-16201353-16401687-6306020607507.54113095400NNU 41/132044827/13201507-13671474-2027151569400BoundaryBasic load ratingsDesignationsStructure sizeInstallation dimersionMassmmkNmmmmkgdDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax140021807759.544550104400NNU 41/140044827/14001598-14701564-21401608810700150023008009.547520118800NNU 41/150044827/15001709-15701674-22601718812300

•