双列圆柱滚子轴承介绍.pdf

双列圆柱滚子轴承双列圆柱滚子轴承 双列圆柱滚子轴承有圆柱和圆锥孔（后置代号 K）两种结构。主要有 2 种类型：NNU 设计和 NN 设计。NN 型设计内圈 双挡边而外圈无挡边。NNU 型设计内圈无挡边而外圈有双挡边。圆锥孔结构可以在安装时，起到调整径向游隙的作 用。双列圆柱滚子轴承允许轴与轴承座之间存在一定的的轴向位移，可以被用作非定位轴承。该类轴承具有结构紧 凑、刚性大、承载能力大、受载后变形小等优点，特别适用于机床主轴支承。 双列圆柱滚子轴承的保持架多采用车制实体保持架。 （结构图） Boundary dimensions Basic load ratingsDesignations 结构尺寸安装尺寸 Mass mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damax Damin Damax dbmin ramaxKg 200280602.1420815NN 39403282940-259216221263-210.6 280802.1484960 NN 4940K/W20 4182940Y-259 211222264269-2 14.1 280802.15701220NN 49404282940-259211222264269-215.3 280802.15701220NNU 49404482940225-211222-269228215.3 310822.16551170NN 30403282140-282211-285299-222.7 310822.16551170NNU 30403482140232-211223-293237222.7 3101092.18901730NN 40404282140-282216225293-230.4 220300602.1440895NN 39443282944-279236241-283-211.4 300802.16001330NN 49444282944-279236242-283-216.6 300802.16001330NNU 49444482944245-231242-289249216.6 3409038151480NN 30443282144-310233-313327-2.529.6 3409038151480NNU 30443482144254-230-313327-2.530 340118311902400NN 40444282144-310233-313327-2.539.8 370120410501810NN 31443282744-331241-346-351.9 370120410501810NNU 31443482744263-241-346268352.3 Boundary dimensions Basic load ratingsDesignations 结构尺寸安装尺寸 Mass mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damax Damin Damax dbmin ramaxKg 240300601.14051030NN 48484282848-283248255287290-19.77 300601.1358930NNU4848-259-248255-29026319.9 320602.1460975NN 39483282948-300251262-309-212.2 320802.16251450NN 49484282948-300251262-309-217.9 320802.16251450NNU 49484482948263-251262-309269218 3609238551600NN 30483282148-330253-333347-2.532.7 3609238551600NNU 30483482148274-253266-3472802.532.7 360118312402600NN 40484282148-330253266333347-2.539.3 360118312402600NNU 40484482148274-253266-3472812.542.7 400128411702040NN 31483282748-358256-362384-364.2 400160418803530NNU 41484482748282-256282-384291385 260360752.16701380NN 39523282952-335271288-349-221.4 3601002.17111540NN 4952K4182952-335271288-349-229.2 3601002.19352100NN 49524282952-335271288-349-228.3 3601002.19352100NNU 49524482952292-271288-349296231.1 Boundary dimensions Basic load ratingsDesignations 结构尺寸安装尺寸 Mass mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damax Damin Damax dbmin ramaxKg 26040010449691810NN 3052K3182152-364276-367384-347.1 40010449691810NN 30523282152-364276-367384-348.5 400140415503250NN 40524282152-364276-369384-359.7 400140415503250NNU 40524482152300-276289-384299365 440144414802660NN 31523282752-393276-415424-389.1 440180422004000NNU41524482752306-276300-4243103113 280350691.14451160NN 48564282856-329287.5 -340-115.3 3506924571200NNU4856K-303-287.5 298-340307115.5 380752.16951460NN 39563282956-355291-369-222.7 3801002.19602230NN 49564284956-355291-369-232.9 3801002.19602230NNU 49564482956312-291308-369316233 420106410201950NN 3056K3182156-384296-387404-349.1 420106410201950NN 30563282156-384296-387404-349.9 420106410802080NNU3056-320-300-440326351.4 460146515202790NN 31563282756-413300-416440-495.7 Boundary dimensionsBasic loadDesignations结构尺寸安装尺寸Mass ratings mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damax Damin Damax dbminramaxKg 300380802.16901760NNU 48604482860324-308320-369330221.7 420118312302870NN 49604282960-388314335-398-2.551.6 420118312302870NNU 49604482960339-314335-4063432.551.9 460118411802250NN 30603282160-418316-421444-371.7 460118411802250NN 3060K3182160-418316-421444-369.6 460160419204100NN4060-418316-440-397.6 500160517603150NN 31603282760-448320-450480-4125 500160517603150NNU 31603482760358-320-4803654126 320400802.17001840NNU 48644482864346-328340-389350222.8 440118312603050NN 49644282964-408334355-427-2.550.2 440118312603050NN 4964K4182964-408334355-427-2.552 440118312603050NNU 49644482964359-334355-4263632.554.9 480121413502670NN 30643282164-438336-442464-376.6 480121413502670NNU 30643482164366-336353442464-376.9 480160419604300NNU 40644482164367-336353-4643643103 Boundary dimensions Basic load ratingsDesignations 结构尺寸安装尺寸Mass mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damax Damin Damax dbminramaxKg 320540176520903750NNU 31643482764384-340379-5203894154 3404609039052020NN 39683282968-428353375-447-2.542.9 460118310402450NN 4968K4182968-428353375-447-2.553.8 460118313503400NN 49684282968-428353375-447-2.552.1 460118313503400NNU 49684482968379-354375-4463832.557.8 520133515603020NN 3068K3182168-473360-477500-4101 520133515603020NN 30683282168-473360-477500-4104 520133515603020NNU30683482168387-360-5004004104 520180524205350NNU 40684482168385-360377-5003894141 3604809039302130NN 39723282972-448373-453467-2.544.9 480118313903550NNU 49724482972399- 374395-4664032.5 60.6 540134516303240NN 30723282172-493380-497520-4106 540134516303240NN 3072K3182172-493380-497520-4106 540134516303240NNU 30723482172413-380-5204204108 540180525305450NN 40723282172-496380397-520-4132 Boundary dimensionsBasic loadDesignations结构尺寸安装尺寸Mass ratings mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damaxDamin DamaxdbminramaxKg 420620150521304450NN 30843282184-568440-574600-4154 620150521304450NNU 30843482184478-440-6004744155 620200531507100NN 40844282184-571440-574600-4189 620200534007850NNU 40844482184469-440460-6004744209 700224635506800NNU 31843482784501-444-6605085347 4405401002.19502790NNU 48884482888470-448464-529476249.5 650157623604900NN 30883282188-596466-600624-5177 650157623604900NNU 30883482188500-466-6245075178 720226635006800NN 31883282788-649466-680-5357 460580118312003600NNU48924482892497-474489-5665022.576 620118416103700NN 39923282992-578476504-604-394.5 620160424006200NNU 49924482992510-476504-6045153140 680163624705070NN 3092K3182192-624484-627654-5204 680163624705070NN 30923282192-624484-627654-5204 480650170526907000NN 49964282996-607500-630-4164 Boundary dimensions Basic load ratingsDesignations 结构尺寸安装尺寸 Mass mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damax Damin Damax dbmin ramaxKg 480700165626005550NN 30963282196-643506-648674-5211 700218643008600NNU40964482196533-506523-6745385273 7902487.540508100NN 31963282796-708512-718758-6447 500670170527207200NNU 49/50044829/500554-520548-6505594171 720167625805600NN 30/500 32821/500-664526-668694-5205 720167625805600NNU 30/50034821/500563-526-6945705220 530710136520404900NN 39/530 32829/530-663550582-690-4149 710180529007050NNU 49/53044829/530588-550582-6905934202 780185632006900NN 30/530 32821/530-715556-720754-5296 560750140523704860NN 39/560 32829/530-705576-711735-4188 750190532508700NNU 49/56044829/560623-580619-7306284239 780180824006400NN 6/5602872/560-725580-732765-5266 820195824606560NN 30/560K31821/560-756586-761794-5341 8202586410010600NN 40/560 42821/560-745586-794-5472 8202586572013100NNU 40/56044821/560626-586615-7946325420 Boundary dimensions Basic load ratings Designations结构尺寸安装尺寸Mass mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damax Damin Damax dbmin ramaxKg 5609202807.5685013700NNU 31/56034827/560650-630-6556738 6008002005385010500NNU 49/60044829/600666-620662-7806724284 800200534507180NN 49/600K41829/600-755620-780-4257 870200634207785NN 30/600 32821/600-803626-808844-5355 8702726613814040NNU 40/60044821/600664-626653-8446705530 9803757.5891018990NNU 41/60044827/600699-633682-94770661100 630780150422907000NNU 48/63044828/630676-646667-7646763160 8502186420011400NN 49/630 42829/630-793656-824-5328 8502186400010800NNU 49/63044829/630704-656699-8247105356 9202127.538608820NN 30/630 32821/630-845663-851887-6430 9202907.5688515750NNU 40/63044821/630699-663688-8877056635 1030 4007.5990021600NNU 41/63044827/630734-663716-99774061330 6709002306445012330NN 49/670 42829/670-838696-874-5419 9002306495013100NNU 49/67044829/670738-696732-8747445430 9802307.5462010260NN 30/670K31821/670-901703-907947-6597 Boundary dimensions Basic load ratingsDesignations 结构尺寸安装尺寸 Mass mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damax Damin Damax dbmin ramaxKg 6709803087.5757817640NNU 40/670 44821/670744-703733-9477506765 1090 4127.510890 22950NNU 41/670 44827/670774-703756-105778061500 710870160426408350NNU 48/710 44828/710759-726750-8547593203 9502436485013770NNU49/71044829/710782-736776-9247885480 1030 2367.5514811880NN 30/71032821/710-951743-957997-6590 1030 3157.5841519440NNU 40/710 44821/710784-743772-9977906850 1150 4389.512060 25650NNU 41/710 44827/710820-750800-111082681790 750920170530709180NN 48/75042828/750-879770-887904-4240 1000 2506495014400NNU 49/750 44829/750831-776824-9748375540 1090 2507.5633614400NN 30/75032821/750-1007783-10111057-6705 1090 3357.5918021600NNU 40/750 44821/750830-783816-10578366925 1220 4759.514490 31950NNU 41/750 44827/750871-790850-118087782230 8001060 2586524715300NNU 49/800 44829/800884-826876-10348905615 1150 2587.5702916200NN 30/80032821/800-1065833-10711117-6790 1150 3457.5972023400NNU 40/800 44821/800885-833871-111789161140 Boundary dimensions Basic load ratingsDesignations 结构尺寸安装尺寸 Mass mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damax Damin Damax dbmin ramaxKg 8001280 4759.514850 32850 NNU 41/800 44827/800921-840900-124092882390 8501030 1805340011400 NNU48/85044828/850905-888-9124310 1120 2726534616200 NNU 49/850 44829/850939-876930-10949465715 1220 2727.5712816740 NN 30/85032821/850-1130883-11361187-6940 1220 3657.510530 25650 NNU 40/850 44821/850940-883923-118794761340 1360 500619080 40500 NNU 41/850 44827/850976-897935-133496352900 9001180 2806594018000 NNU 49/900 44829/900986-926977-11549935805 1280 2807.5742518000 NN 30/90032821/900-1185933-11911257-61050 1280 3757.511520 28350 NNU 40/900 44821/900990-933963-125799761500 1420 515619800 42750 NNU 41/900 44827/9001032 -9471008-1394103953180 9501250 3007.5663320160 NNU 49/950 44829/9501046 -9831036-121710536960 1360 3007.5821720160 NN 30/95032821/950-1255983-12631327-61300 1360 4127.512780 31950 NNU 40/950 44821/9501050 -9831033-1327105761900 9501500 545622950 51300 NNU 41/950 44827/9501092 -9971068-1474109953830 1000 1320 3157.5772223400 NNU 49/100044829/10001103 -10331096-1287111061250 Boundary dimensions Basic load ratingsDesignations 结构尺寸安装尺寸 Mass mmkNmmmm dDBrminCrCorCurrentOriginalFwEwdamin damax Damin Damax dbmin ramaxKg 1000 1320 315 7.5858025200 NN49/100042829/1000-12381033-12491287-61200 1420 308 7.5909022050 NN 30/1000 32821/1000-13161033-13241387-61400 1420 412 7.513860 34200 NNU 40/100044821/10001101 -10331084-1387110862000 1580 580 624750 55800 NNU 41/100044827/10001154 -10471128-1474116154270 1060 1