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China NU2308 Cylindrical Roller Bearing, 40*90*33, Split Design for Large Radial Load - Suppliers & Factory

Structural Design of Our High-Performance Bearings

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Our bearings feature a split bearing structure, designed without flanges on the outer ring and equipped with flanges on both sides of the inner ring. This innovative design allows for axial movement of the shaft relative to the bearing seat in both directions. As a reliable floating end bearing, it is ideal for applications requiring a large radial load capacity and low friction coefficient. These characteristics combined make it suitable for high-speed rotation. As a leading China supplier and manufacturer, our factory ensures the highest quality standards for optimal performance in industrial applications.

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    Product Details

    Bearing Detail

    Item No. NU2308
    Bearing Type Cylindrical roller bearing
    Material Chrome steel GCr15
    Precision P0, P2, P5, P6, P4
    Clearance C0, C2, C3, C4, C5
    Brand JITO or OEM
    Specification 40*90*33 mm
    Weight 0.951kg
    Dynamic load rating 82.5 kN
    Static load rating 88 kN
    Fatigue limit load 5.25kN
    Fatigue load 1.22kN
    Temperature −40℃~120℃
    Grease limit speed 7000 r/min
    Oil limit speed 8200 r/min
    Application Automotive, Agricultural, Industrial machinery
    Bearing Package Pallet, wooden case, commercial packaging or as customers' requirement
    Ball Bearings Feature Highlights

    • Long-life with high quality

    • Low-noise with strict controlling the quality of JITO bearing

    • High-load by the advanced high-technical design

    • Competitive price, which has the most valuable

    • OEM service offered, to meet the customers requirements

    NU2308 Cylindrical Roller Bearing Key Features

    Large Load Capacity

    The roller and the raceway are in line contact or repair line contact, with large radial load capacity, can withstand heavy loads and impact loads, suitable for heavy machinery and equipment such as rock drills, crushers, rolling mills, etc.

    Suitable for High-Speed Rotation

    Small friction coefficient, the limit speed is close to that of deep groove ball bearings, the friction between the rolling element and the ferrule rib is small, and it can maintain good performance at high speed operation, and can be used for equipment with high speed requirements such as printing machinery.

    Strong Adaptability to Axial Displacement

    N type and NU type can move axially, can adapt to the changes in the relative position of the shaft and the housing caused by thermal expansion or installation errors, and can be used as free end supports. This feature makes it widely used in some occasions where the shaft system has large expansion and contraction changes.

    Easy Installation and Disassembly

    It is a separable bearing, the inner ring or outer ring can be separated, the installation and disassembly process is simple, which is convenient for equipment maintenance and overhaul, and can effectively save maintenance time and cost.

    Wide Range of Applications

    Due to the above characteristics, NU2308 bearings are widely used in equipment in many fields such as mining, metallurgy, construction, machinery, and chemical industry, such as tunneling machines, forklifts, vibrating screens, woodworking machinery, etc.

    Applications

    Industrial Machinery

    In some machine tools with high precision requirements, it can be used to support rotating parts such as the spindle, can withstand large radial loads, ensure the rotation accuracy and stability of the spindle, and help improve the accuracy of machined parts. In large concrete machinery, such as the mixing shaft of a concrete mixer, it can withstand the large radial force generated during the mixing process, so that the mixing shaft rotates stably and ensures that the concrete is mixed evenly.

    Agricultural Machinery

    In the gearbox of a tractor, it can be used to support components such as the gear shaft, withstand the radial force and axial force from the gear transmission, ensure the normal operation of each component in the gearbox, and realize the effective transmission and speed change function of power. In the conveying device of the harvester, it can provide stable support for the conveying roller, withstand the pressure and friction generated when conveying materials, make the conveying roller rotate smoothly, and ensure smooth material transportation.

    Automotive Industry

    In the transmission of a car, it can be used to support the input shaft, output shaft and intermediate shaft of the transmission, withstand the radial force generated when the gears are engaged, ensure the rotation accuracy and stability of the shaft, enable the transmission to accurately achieve different transmission ratios, and realize the speed change function of the vehicle. In the wheel hub of the car, although the car wheel hub bearing usually adopts a special wheel hub bearing unit, in some specially designed or modified vehicles, NJ208 bearings may also be used to support the wheel hub, bear the radial load and part of the axial load when the vehicle is running, and ensure the stable rotation of the wheel.

    Other Fields

    In air-conditioning compressors, it can be used to support the rotating parts such as the crankshaft of the compressor, bear the large radial force generated during the compression process, ensure the rotation accuracy and stability of the crankshaft, so that the compressor can work normally and realize the cooling or heating function. In some large ventilation equipment, such as the drive shaft of the fan, it can bear the radial force and axial force generated when the fan is running, so that the drive shaft rotates stably and ensures that the fan can effectively transport air.

    Products Sheet

    Bearing numbers Boundary dimensions Basic load ratings Limiting speeds Weight (approx.)
    kg
    mm N r/min
    NU NJ NUP N NF d D B r r1 Dynamic Cr Static Cor grease oil kg
    NU204 NJ NUP N NF 20 47 14 1 0.6 16600 13900 17000 20000 0.111
    NU204E NJ NUP - - 47 14 1 0.6 25700 22600 15000 18000 0.122
    NU2204 NJ NUP N - 47 18 1 0.6 22200 20300 15000 18000 0.144
    NU2204E NJ NUP - - 47 18 1 0.6 30500 28300 14000 16000 0.158
    NU304 NJ NUP N NF 52 15 1.1 0.6 23100 19200 14000 17000 0.153
    NU304E NJ NUP - - 52 15 1.1 0.6 31500 26900 13000 15000 0.176
    NU2304 NJ NUP N - 52 21 1.1 0.6 33000 30000 13000 15000 0.25
    NU2304E NJ NUP - - 52 21 1.1 0.6 42000 39000 12000 14000 0.242
    NU1005 NJ NUP N - 25 47 12 0.6 0.3 15100 14100 16000 19000 0.092
    NU205 NJ NUP N NF 52 15 1 0.6 18800 17000 14000 16000 0.137
    NU205E NJ NUP - - 52 15 1 0.6 29300 27700 13000 15000 0.151
    NU2205 NJ NUP N - 52 18 1 0.6 25100 24700 13000 15000 0.166
    NU2205E NJ NUP - - 52 18 1 0.6 35000 34500 11000 13000 0.186
    NU305 NJ NUP N NF 62 17 1.1 1.1 31500 27700 12000 14000 0.241
    NU305E NJ NUP - - 62 17 1.1 1.1 41500 37500 11000 13000 0.275
    NU2305 NJ NUP N - 62 24 1.1 1.1 46000 45000 11000 12000 0.343
    NU2305E NJ NUP - - 62 24 1.1 1.1 57000 56000 9700 11000 0.386
    NU405 NJ NUP N NF 80 21 1.5 1.5 46500 40000 8500 10000 0.55
    NU1006 NJ NUP N - 30 55 13 1 0.6 19700 19600 14000 16000 0.13
    NU206 NJ NUP N NF 62 16 1 0.6 24900 23300 12000 14000 0.207
    NU206E NJ NUP - - 62 16 1 0.6 39000 37500 11000 13000 0.226
    NU2206 NJ NUP N - 62 20 1 0.6 35000 36000 11000 13000 0.261
    NU2206E NJ NUP - - 62 20 1 0.6 49000 50000 9700 11000 0.297
    NU306 NJ NUP N NF 72 19 1.1 1.1 38500 35000 10000 12000 0.358
    NU306E NJ NUP - - 72 19 1.1 1.1 53000 50000 93000 11000 0.398
    NU2306 NJ NUP N - 72 27 1.1 1.1 51500 51000 9000 11000 0.513
    NU2306E NJ NUP - - 72 27 1.1 1.1 74500 77500 8300 9700 0.58
    NU3306 - - - - 72 30.2 1.1 1.1 69000 74000 7000 11000 -
    NU406 NJ NUP N NF 90 23 1.5 1.5 62500 55000 7300 8500 0.751
    NU1007 NJ NUP N - 35 62 14 1 0.6 22600 23200 12000 15000 0.179
    NU207 NJ NUP N NF 72 17 1.1 0.6 35500 34000 11000 12000 0.295
    NU207E NJ NUP - - 72 17 1.1 0.6 50500 50000 9500 11000 0.327
    NU2207 NJ NUP N - 72 23 1.1 0.6 52000 55500 9500 11000 0.404
    NU2207E NJ NUP - - 72 23 1.1 0.6 61500 65500 8500 10000 0.455
    NU307 NJ NUP N NF 80 21 1.5 1.1 49500 47000 9000 11000 0.461
    NU307E NJ NUP - - 80 21 1.5 1.1 71000 71000 8100 9600 0.545
    NU2307 NJ NUP N - 80 31 1.5 1.1 64500 65500 7900 9300 0.712
    NU2307E NJ NUP - - 80 31 1.5 1.1 99000 109000 7200 8500 0.78
    NU3307 - - - - 80 34.9 1.5 1.5 81000 89000 7000 10000 -
    NU407 NJ NUP N NF 100 25 1.5 1.5 75500 69000 6400 7500 0.99
    NU1008 NJ NUP N - 40 68 15 1 0.6 27300 29000 11000 13000 0.22
    NU208 NJ NUP N NF 80 18 1.1 1.1 43800 43000 9400 11000 0.378
    NU208E NJ NUP - - 80 18 1.1 1.1 55500 55500 8500 10000 0.426
    NU2208 NJ NUP N - 80 23 1.1 1.1 58000 62000 8500 10000 0.49
    NU2208E NJ NUP - - 80 23 1.1 1.1 72500 77500 7600 8900 0.552
    NU308 NJ NUP N NF 90 23 1.5 1.5 58500 57000 8000 9400 0.658
    NU308E NJ NUP - - 90 23 1.5 1.5 83000 81000 7200 8500 0.754
    NU2308 NJ NUP N - 90 33 1.5 1.5 82500 88000 7000 8200 0.951
    NU2308E NJ NUP - - 90 33 1.5 1.5 114000 122000 6400 7500 1.06
    NU408 NJ NUP N NF 110 27 2 2 95500 89000 5700 6700 1.3
    NU1009 NJ NUP N - 45 75 16 1 0.6 31000 34000 9900 12000 0.28
    NU209 NJ NUP N NF 85 19 1.1 1.1 46000 47000 8400 9900 0.432
    NU209E NJ NUP - - 85 19 1.1 1.1 63000 66500 7600 9000 0.495
    NU2209 NJ NUP N - 85 23 1.1 1.1 61500 68000 7600 9000 0.53
    NU2209E NJ NUP - - 85 23 1.1 1.1 76000 84500 6800 8000 0.6
    NU309 NJ NUP N NF 100 25 1.5 1.5 79000 77500 7200 8400 0.877
    NU309E NJ NUP - - 100 25 1.5 1.5 97500 98000 6500 7600 0.996
    NU2309 NJ NUP N - 100 36 1.5 1.5 106000 113000 6300 7400 1.27
    NU2309E NJ NUP - - 100 36 1.5 1.5 137000 153000 5700 6800 1.41
    NU409 NJ NUP N NF 120 29 2 2 115000 36000 5100 6000 1.62
    NU1010 NJ NUP N - 50 80 16 1 0.6 32000 36000 8900 11000 0.295
    NU210 NJ NUP N NF 90 20 1.1 1.1 50500 54500 7600 9000 0.47
    NU210E NJ NUP - - 90 20 1.1 1.1 66000 72000 6900 8100 0.54
    NU2210 NJ NUP N - 90 23 1.1 1.1 67500 78500 6900 8100 0.571
    NU2210E NJ NUP - - 90 23 1.1 1.1 79500 91500 6200 7300 0.652
    NU310 NJ NUP N NF 110 27 2 2 87000 86000 6500 7700 1.14
    NU310E NJ NUP - - 110 27 2 2 110000 113000 5900 6900 1.3
    NU2310 NJ NUP N - 110 40 2 2 121000 131000 5700 6700 1.7
    NU2310E NJ NUP - - 110 40 2 2 163000 187000 5200 6100 1.9
    NU410 NJ NUP N NF 130 31 2.1 2.1 139000 136000 4700 5500 2.02
    If more, please click our website www.jito.cc

    Advantage

    Solution

    At the beginning, we will have a communication with our customers on their demand, then our engineers will work out an optimum solution based on the customers’ demand and condition.

    Quality Control (Q/C)

    In accordance with ISO standards, we have professional Q/C staff, precision testing instruments and internal inspection system, the quality control is implemented in every process from material receiving to products packaging to ensure our bearings quality.

    Package

    Standardized export packing and environment-protected packing material are used for our bearings, the custom boxes, labels, barcodes etc. can also be provided according to our customer’s request.

    Logistic

    Normally, our bearings will be sent to the customers by ocean transportation due to its heavy weight, airfreight, express is also available if our customers need.

    Warranty

    We warrant our bearings to be free from defects in material and workmanship for a 12 months period from the shipping date, this warranty is voided by non-recommended use, improper installation or physical damage.

    Frequently Asked Questions (FAQ)

    What are the dimensions and weight of the NU2308 bearing?
    The NU2308 cylindrical roller bearing features an inner diameter of 40 mm, an outer diameter of 90 mm, and a width of 33 mm (40*90*33 mm). Its approximate weight is 0.951 kg.
    What material and precision classes are available for NU2308 bearings?
    NU2308 bearings are manufactured with premium Chrome steel (GCr15) and are available in multiple precision grades including P0, P2, P4, P5, and P6, with radial internal clearance options spanning C0, C2, C3, C4, and C5.
    Can the NU2308 cylindrical roller bearing accommodate axial displacement?
    Yes, as an NU-type cylindrical roller bearing with separable rings, it allows axial movement of the shaft relative to the housing, making it an ideal non-locating (free-end) bearing to accommodate thermal expansion.
    What are the load and speed ratings for the NU2308 bearing?
    The NU2308 bearing has a dynamic load rating of 82.5 kN and a static load rating of 88 kN. It achieves limiting speeds of up to 7,000 r/min with grease lubrication and 8,200 r/min with oil lubrication.
    Do you offer OEM services and custom packaging for bulk orders?
    Yes, we provide full OEM branding and tailored solutions. Standard export packing includes pallets and wooden cases, while custom boxes, specialized labels, and barcodes are available upon request.
    What is the standard warranty coverage for JITO bearings?
    We offer a 12-month quality warranty from the date of shipment against manufacturing and material defects under recommended operating and installation conditions.

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