Company Details

  • Ningbo Ritbearing Imp & Exp Co.,Ltd.

  •  [Zhejiang,China]
  • Business Type:Agent , Distributor/Wholesaler , Manufacturer , Service , Trade Company
  • Main Mark: Americas , Asia , Europe , Other Markets
  • Exporter:81% - 90%
  • Certs:ISO9001
  • Description:Single Row Roller Bearings NU300 Series,Cylindrial Roller Bearings NU300 Series,Precision Roller Bearings NU300 Series
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Ningbo Ritbearing Imp & Exp Co.,Ltd.

Single Row Roller Bearings NU300 Series,Cylindrial Roller Bearings NU300 Series,Precision Roller Bearings NU300 Series

Home > Products > Roller Bearings > Cylindrical Roller Bearings > Cylindrial Roller Bearings NU300 Series

Cylindrial Roller Bearings NU300 Series

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    Payment Type: L/C,T/T
    Incoterm: FOB,CFR,CIF
    Delivery Time: 30 Days

Basic Info

Model No.: NU300 Series

Rolling Body: Roller Bearings

The Number of Rows: Single

Product Description

Cylindrial Roller Bearings NU300 Series are characterized by moderate thrust-load capacities. They contain cylindrically-shaped roller, which are nevertheless not true cylinders. Instead, they are crowned or end-relieved to reduce stress concentrations. This particular geometry results in low friction and allows high-speed applications. Cylindrical Roller Bearings are commonly available in precision grades such as RBEC-5, a classification from the Roller Bearing Engineers Committee (RBEC). RBEC ratings describe the accuracy and tolerance range of different types of bearings. As a rule, the higher the RBEC number, the tighter the bearing tolerances. Typically, Single Row Roller Bearings NU300 Series are lubricated with oil, which also serves as a coolant.




Cylindrial Roller Bearings NU300 Series

Most Precision Roller Bearings NU300 Series are made of alloy or low-carbon steels. Some applications require the use of case-hardened or through-hardened, high-carbon, bearing-quality steel. High-carbon grades of steel do not require carburizing and can be case-hardened by induction heating or through-hardened by conventional heating methods. When low-carbon, carburized grades of steel are used, carbon is introduced after the cylindrical roller bearings are machined to a depth sufficient to produce a hardened case that can sustain bearing loads. The addition of carbon and alloys ensures the proper combination of a hard, fatigue-resistant case and a tough, ductile core.


Precision Roller Bearings NU300 Series


Bearing No. Boundary dimensions(mm) Basic load rating(kN) Limiting speeds(rpm) Weight(Kg)
d D B rs min rs1min Dynamic(Cr) Static(Cor) Grease Oil
NU304E 20 52 15 1.1 0.6 31.5 26.9 13,000 15,000 0.176
NU305E 25 62 17 1.1 1.1 41.5 37.5 11,000 13,000 0.275
NU306E 30 72 19 1.1 1.1 53 50 9,300 11,000 0.398
NU307E 35 80 21 1.5 1.1 71 71 8,100 9,600 0.545
NU308 40 90 23 1.5 1.5 58.5 57 8,000 9,400 0.658
NU308E 40 90 23 1.5 1.5 83 81.5 7,200 8,500 0.754
NU309 45 100 25 1.5 1.5 74 71 7,200 8,400 0.877
NU309E 45 100 25 1.5 1.5 97.5 98.5 6,500 7,600 0.996
NU310 50 110 27 2 2 87 86 6,500 7,700 1.14
NU310E 50 110 27 2 2 110 113 5,900 6,900 1.3
NU311 55 120 29 2 2 111 111 5,900 7,000 1.45
NU311E 55 120 29 2 2 137 143 5,300 6,300 1.65
NU312 60 130 31 2.1 2.1 124 126 5,500 6,500 1.8
NU312E 60 130 31 2.1 2.1 150 157 4,900 5,800 2.05
NU313 65 140 33 2.1 2.1 135 139 5,100 6,000 2.23
NU313E 65 140 33 2.1 2.1 181 191 4,600 5,400 2.54
NU314 70 150 35 2.1 2.1 158 168 4,700 5,500 2.71
NU314E 70 150 35 2.1 2.1 205 222 4,200 5,000 3.1
NU315 75 160 37 2.1 2.1 190 205 4,400 5,200 3.28
NU315E 75 160 37 2.1 2.1 240 263 4,000 4,700 3.74
NU316 80 170 39 2.1 2.1 190 207 4,100 4,800 3.86
NU316E 80 170 39 2.1 2.1 256 282 3,700 4,400 4.22
NU317 85 180 41 3 3 212 228 3,900 4,600 4.54
NU317E 85 180 41 3 3 291 330 3,500 4,100 4.81
NU318 90 190 43 3 3 240 265 3,700 4,300 5.3
NU318E 90 190 43 3 3 315 355 3,300 3,900 5.72
NU319 95 200 45 3 3 259 285 3,400 4,000 6.13
NU319E 95 200 45 3 3 335 385 3,100 3,600 6.62
NU320 100 215 47 3 3 299 335 3,300 3,800 7.49
NU320E 100 215 47 3 3 380 425 2,900 3,500 8.57
NU321 105 225 49 3 3 320 360 3,100 3,700 8.53
NU322 110 240 50 3 3 360 400 3,000 3,500 10
NU322E 110 240 50 3 3 450 525 2,700 3,100 11.1
NU324 120 260 55 3 3 450 510 2,700 3,200 12.8
NU324E 120 260 55 3 3 530 610 2,400 2,800 13.9
NU326 130 280 58 4 4 560 665 2,500 2,900 17.4
NU326E 130 280 58 4 4 615 735 2,200 2,600 19.4
NU328 140 300 62 4 4 615 745 2,300 2,700 21.2
NU328E 140 300 62 4 4 665 795 2,100 2,400 23.2
NU330 150 320 65 4 4 665 805 2,100 2,500 25.3
NU330E 150 320 65 4 4 760 920 1,900 2,300 28.4

Looking for ideal Single Row Roller Bearings NU300 Series Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Cylindrial Roller Bearings NU300 Series are quality guaranteed. We are China Origin Factory of Precision Roller Bearings NU300 Series. If you have any question, please feel free to contact us.

Product Categories : Roller Bearings > Cylindrical Roller Bearings

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