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China, Chinese Heavy Duty Cylindrical Roller Bearings N208e, N208ecp, N208em, NF208e, NF208em, Nu208em, Nj208em, Nup208em¹ Industrial Products Supplier Manufacturer Details, price list catalog:

China Industrial Products Supplier Manufacturer List Catalog

Bearing Cylindrical Roller Bearing N208ecp N208em NF208e NF208em Nu208em Nj208em Nup208em Cylindrical Roller Bearings Roller Bearings

Cixishi Chengben Bearing Co., Ltd.

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Product Description Cylindrical roller bearings have cylindrical rollers as their rolling elements and are separable bearings, which facilitate installation and disassembly. According to whether the rings have flanges or not, they can be classified into single-row cylindrical roller bearings such as N, NU, NJ, NF, and NUP, as well as double-row cylindrical roller bearings such as NNU and NN.In addition, there are multi-row cylindrical roller bearings. Cylindrical roller bearings generally use solid cages made of copper alloy or engineering plastic cages. When the rotational speed is low and the load is large, they can be designed as full roller structures without cages.The rollers and raceways of cylindrical roller bearings have a line contact, and they have a large load capacity, mainly bearing radial loads. The friction between the rolling elements and the flange of the ring is small, making it suitable for high-speed rotation. During use, a relatively high coaxiality is required. Cylindrical roller bearings with no flanges on either the inner or outer ring can have their inner and outer rings move relatively in the axial direction, so they can be used as free-end bearings. Cylindrical roller bearings with double flanges on one side of the inner and outer rings and a single flange on the other side of the ring can withstand a certain degree of unidirectional axial load.N typeThe outer ring of the N-type bearing has no flanges, while the inner ring has flanges on both sides, which allows the shaft to move in both axial directions relative to the bearing housing.NU typeThe outer ring of the NU-type bearing has flanges on both sides, but the inner ring has no flanges. It can also allow the displacement of the shaft relative to the bearing housing in both axial directions. Therefore, this type of structure is suitable for use as a floating end bearing.NJ typeThe outer ring of the NJ type bearing has flanges on both sides, and the inner ring has flanges on one side. It can withstand a certain amount of unidirectional axial load.NF typeThe outer ring of the NF type has flanges on one side, and the inner ring has flanges on both sides. It can also withstand a certain amount of unidirectional axial load. Therefore, this type of structure is suitable for use as a unidirectional axial positioning bearingNUP typeThe NUP type bearing has flanges on both sides of the outer ring, a fixed single flange on one side of the inner ring, and a detachable flat retaining ring on the other side, which can withstand a certain amount of bidirectional axial load.NN typeThe outer ring of the NN type bearing has no flanges, while the inner ring has flanges on both sides and a middle flange, which allows the shaft to have two-direction axial displacement relative to the bearing housing.NNU typeThe outer ring of the NNU type bearing has flanges on both sides and a middle flange in the middle, while the inner ring has no flanges. It is allowed for the shaft to generate displacements in two axial directions relative to the bearing housing. Therefore, this type of structure is suitable for use as a floating end bearing.Product FeaturesThe inner ring or outer ring can be separated, which is convenient for installation and disassembly.It has a large radial load-bearing capacity and is suitable for withstanding heavy loads and impact loads.It has a low coefficient of friction, is suitable for high speed, and its limiting speed is close to that of deep groove ball bearings.The N type and NU type can move axially and can be used as free-end supports.The processing requirements for the shaft or seat hole are relatively high. Relative skew should be prevented to avoid contact stress concentration.Application FieldsLarge and medium-sized electric motors, locomotive vehicles, machine tool spindles, internal combustion engines, generators, gas turbines, reducers, steel rolling mills, vibrating screens, and lifting and transportation machinery, etc.Bearing No.Principal Dimensions(mm)Limited Speed(rpm)Weight (kg) dDBrs minrs1 min GreaseOil NUP204E20471410.615000180000.122 NUP205E25521510.613000150000.151 NUP206E30621610.611000130000.226 NUP207E3572171.10.69500110000.327 NUP2084080181.11.19400110000.378 NUP208E4080181.11.18500100000.426 NUP2094585191.11.1840099000.432 NUP209E4585191.11.1760090000.495 NUP2105090201.11.1760090000.47 NUP210E5090201.11.1690081000.54 NUP21155100211.51.1690082000.638 NUP211E55100211.51.1630074000.718 NUP21260110221.51.5640076000.818 NUP212E60110221.51.5580068000.923 NUP21365120231.51.5590070001.02 NUP213E65120231.51.5540063001.21 NUP21470125241.51.5550065001.12 NUP214E70125241.51.5500059001.3 NUP21575130251.51.5510060001.23 NUP215E75130251.51.5470055001.41 NUP216801402622480057001.5 NUP216E801402622440051001.67 NUP217851502822450053001.87 NUP217E851502822410048002.11 NUP218901603022430050002.3 NUP218E901603022390046002.44 NUP21995170322.12.1400047002.78 NUP219E95170322.12.1360043003.02 NUP220100180342.12.1380045003.33 NUP220E100180342.12.1350041003.66 NUP221105190362.12.1360043003.95 NUP222110200382.12.1340040004.63 NUP222E110200382.12.1310037004.27 NUP224120215402.12.1320037005.57 NUP224E120215402.12.1290034005.97 NUP2261302304033290034006.3 NUP226E1302304033260031006.9 NUP2281402504233270031007.88 NUP228E1402504233240028008.73 NUP2301502704533250029009.92 NUP230E15027045332200260011 No. Type BDODWidthWeight NUNNFNJNUP(mm)(mm)(mm)(kg) NU2204EN2204ENF2204ENJ2204ENUP2204E2047180.149 NU2304EN2304ENF2304ENJ2304ENUP2304E2052210.216 NU205EN205ENF205ENJ205ENUP205E2552150.14 NU2205EN2205ENF2205ENJ2205ENUP2205E2552180.168 NU2305EN2305ENF2305ENJ2305ENUP2305E2562240.355 NU206EN206ENF206ENJ206ENUP206E3062160.214 NU2206EN2206ENF2206ENJ2206ENUP2206E3062200.268 NU2306EN2306ENF2306ENJ2306ENUP2306E3072270.538 NU207EN207ENF207ENJ207ENUP207E3572170.311 NU2207EN2207ENF2207ENJ2207ENUP2207E3572230.414 NU2307EN2307ENF2307ENJ2307ENUP2307E3580310.738 NU208EN208ENF208ENJ208ENUP208E4080180.394 NU2208EN2208ENF2208ENJ2208ENUP2208E4080230.507 NU2308EN2308ENF2308ENJ2308ENUP2308E4090330.974 NU209EN209ENF209ENJ209ENUP209E4585190.45 NU2209EN2209ENF2209ENJ2209ENUP2209E4585230.55 NU2309EN2309ENF2309ENJ2309ENUP2309E45100361.34 NU210EN210ENF210ENJ210ENUP210E5090200.505 NU2210EN2210ENF2210ENJ2210ENUP2210E5090230.59 NU2310EN2310ENF2310ENJ2310ENUP2310E50110401.79 NU211EN211ENF211ENJ211ENUP211E55100210.68 NU2311EN2311ENF2311ENJ2311ENUP2311E55120432.28 NU212EN212ENF212ENJ212ENUP212E60110220.86 NU2212EN2212ENF2212ENJ2212ENUP2212E60110281.12 NU2312EN2312ENF2312ENJ2312ENUP2312E60130462.81 NU213EN213ENF213ENJ213ENUP213E65120231.08 NU2213EN2213ENF2213ENJ2213ENUP2213E65120311.48 NU2313EN2313ENF2313ENJ2313ENUP2313E65140483.34 NU214EN214ENF214ENJ214ENUP214E70125241.2 NU2214EN2214ENF2214ENJ2214ENUP2214E70125311.56 NU2314EN2314ENF2314ENJ2314ENUP2314E70150514.1 NU215EN215ENF215ENJ215ENUP215E75130251.32 NU2215EN2215ENF2215ENJ2215ENUP2215E75130311.64 NU2315N2315NF2315NJ2315NUP231575160555.4 NU216EN216ENF216ENJ216ENUP216E80140261.58 NU2216EN2216ENF2216ENJ2216ENUP2216E80140332.05 NU2316N2316NF2316NJ2316NUP231680170586.4 NU217EN217ENF217ENJ217ENUP217E85150282 NU2217EN2217ENF2217ENJ2217ENUP2217E85150362.58 NU2317N2317NF2317NJ2317NUP231785180607.4 NU218EN218ENF218ENJ218ENUP218E90160302.44 NU2218EN2218ENF2218ENJ2218ENUP2218E90160403.26 NU2318N2318NF2318NJ2318NUP231890190648.4 NU219EN219ENF219ENJ219ENUP219E95170322.96 NU2219EN2219ENF2219ENJ2219ENUP2219E95170433.97 NU2319N2319NF2319NJ2319NUP2319952006710.4 NU220EN220ENF220ENJ220ENUP220E100180343.58 NU2220EN2220ENF2220ENJ2220ENUP2220E100180464.86 NU2320N2320NF2320NJ2320NUP23201002157313.5 NU221N221NF221NJ221NUP221105190364 NU222EN222ENF222ENJ222ENUP222E110200385.02 NU2222N2222NF2222NJ2222NUP2222110200537.5 NU2322N2322NF2322NJ2322NUP23221102408017.5 NU224EN224ENF224ENJ224ENUP224E120215406.11 NU2224N2224NF2224NJ2224NUP2224120215589.5 NU2324N2324NF2324NJ2324NUP23241202608622.5 NU226N226NF226NJ226NUP226130230407 NU2226N2226NF2226NJ2226NUP22261302306411.5 NU2326N2326NF2326NJ2326NUP23261302809328.5 NU228N228NF228NJ228NUP228140250429.1 NU2228N2228NF2228NJ2228NUP22281402506815 NU2328N2328NF2328NJ2328NUP232814030010237 NU230N230NF230NJ230NUP2301502704511 NU2230N2230NF2230NJ2230NUP22301502707317 NU2330N2330NF2330NJ2330NUP233015032010845 NU232N232NF232NJ232NUP2321602904814 NU2232N2232NF2232NJ2232NUP22321602908025 NU2332N2332NF2332NJ2332NUP233216034011455.8 NU234N234NF234NJ234NUP2341703105217.1 NU2334N2334NF2334NJ2334NUP233417036012063 NU238N238NF238NJ238NUP2381903405523 NU203MN203MNF203MNJ203MNUP203M1740120.08 NU204MN204MNF204MNJ204MNUP204M2047140.133 NU205MN205MNF205MNJ205MNUP205M2552150.155 NU206MN206MNF206MNJ206MNUP206M3062160.24 NU207MN207MNF207MNJ207MNUP207M3572170.344 NU208MN208MNF208MNJ208MNUP208M4080180.439 NU209MN209MNF209MNJ209MNUP209M4585190.523 NU210MN210MNF210MNJ210MNUP210M5090200.578 NU211MN211MNF211MNJ211MNUP211M55100210.691 NU212MN212MNF212MNJ212MNUP212M60110220.95 NU213MN213MNF213MNJ213MNUP213M65120231.16 NU214MN214MNF214MNJ214MNUP214M70125241.34 NU215MN215MNF215MNJ215MNUP215M75130251.4 NU216MN216MNF216MNJ216MNUP216M80140261.76 NU217MN217MNF217MNJ217MNUP217M85150282 NU222MN222MNF222MNJ222MNUP222M110200385.11 NU224MN224MNF224MNJ224MNUP224M120215406.47 NU226MN226MNF226MNJ226MNUP226M130230407.34 NU226EN226ENF226ENJ226ENUP226E130230407.26 NU228MN228MNF228MNJ228MNUP228M140250429.1 NU230MN230MNF230MNJ230MNUP230M1502704511.7 NU230EN230ENF230ENJ230ENUP230E1502704511.2 NU232MN232MNF232MNJ232MNUP232M1602904814.2 NU234MN234MNF234MNJ234MNUP234M1703105218 NU236MN236MNF236MNJ236MNUP236M1803205219.6 NU238MN238MNF238MNJ238MNUP238M1903405522.6 NU244MN244MNF244MNJ244MNUP244M2204006538.9 NU248MN248MNF248MNJ248MNUP248M2404407248.2 NU252MN252MNF252MNJ252MNUP252M2604808070.3 NU260MN260MNF260MNJ260MNUP260M3005408587.2 NU2206MN2206MNF2206MNJ2206MNUP2206M3062200.26 NU2207MN2207MNF2207MNJ2207MNUP2207M3572230.4 NU2208MN2208MNF2208MNJ2208MNUP2208M4080230.53 NU2209MN2209MNF2209MNJ2209MNUP2209M4585230.54 NU2210MN2210MNF2210MNJ2210MNUP2210M5090230.589 NU2211MN2211MNF2211MNJ2211MNUP2211M55100250.773 NU2212MN2212MNF2212MNJ2212MNUP2212M60110280.773 NU2218MN2218MNF2218MNJ2218MNUP2218M90160403.68 Low friction (Roller end / flange contact area)The open flange design, together with the roller end design and surface finish, promote lubricant film formation resulting in lower friction and higher axial load carrying capacity.Enhanced operational reliability: The surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film Long service life: The logarithmic roller profile reduces edge stresses at the roller/raceway contact (fig. 3) and sensitivity to misalignment and shaft deflection. Separable and interchangeable: The separable components of cylindrical roller bearings are interchangeable. This facilitates mounting and dismounting, as well as maintenance inspections.

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