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NU Series

NU series single row cylindrical roller bearings feature double ribs on outer ring and ribless inner ring, allowing bidirectional axial displacement. Separable structure simplifies installation and maintenance. With high radial load capacity, low friction and low temperature rise, they suit high speed heavy duty conditions, widely used in reducers, motors, gearboxes and engineering machinery. Factory direct supply and customized service available.

Classification :

Cylindrical Roller Bearings

Keywords :

NU2xx series cylindrical roller bearings, NU3xx series cylindrical roller bearings, NU200 series, NU300 series, non-locating radial bearings, separable cylindrical roller bearings, motor bearings, gearbox bearings, high speed industrial bearings

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PRODUCT DETAILS

 

NU Series Cylindrical Roller Bearings

Full size NU single row cylindrical roller bearings. Separable structure, high radial load capacity with free axial floating to compensate shaft thermal expansion. Interchangeable with mainstream brands, factory direct bulk supply for gearbox, fan, pump and mining machinery.

NU Series Cylindrical Roller Bearing

Structure & Advantages

NU single row cylindrical roller bearing has two ribs on outer ring and no ribs on inner ring. It can withstand heavy radial load and allows free axial floating to absorb thermal elongation of the shaft, cannot bear axial load. The inner ring and outer ring can be separated, convenient for installation and maintenance.

✅ Separable inner & outer ring
✅ Pure radial load bearing
✅ Axial floating compensation
✅ High dynamic load rating
✅ Interchangeable with mainstream brands
✅ Stock available, short lead time

Application Industries

Gearboxes
Mining Equipment
Agricultural Machinery
Construction Machinery
Conveyors
Pumps
Fans
Wind Power Auxiliary

NU Series Full Size Charts

NU10 Series Cylindrical Roller Bearing

Model d(mm) D(mm) B(mm) Dynamic Load(kN) Static Load(kN) Limiting Speed(r/min)
NU1005 C3 25 47 12 17.2 14.5 16000
NU1006 EM 30 55 13 22.8 19.2 13000
NU1007 C4 35 62 14 27.5 23.8 12000
NU1008 E 40 68 15 32.2 28.5 11000
NU1009 M 45 75 16 38.0 34.2 10000
NU1010 C3 50 80 16 41.5 38.0 9500
NU1011 EM 55 90 18 50.2 46.8 8500
NU1012 C4 60 95 18 54.0 51.0 8000
NU1013 E 65 100 18 57.8 55.5 7500
NU1014 M 70 110 20 69.5 66.2 7000
 

NU22 Series Cylindrical Roller Bearing

Model d(mm) D(mm) B(mm) Dynamic Load(kN) Static Load(kN) Limiting Speed(r/min)
NU2204E C3 20 47 18 37.2 28.5 13000
NU2205E EM 25 52 18 42.5 33.2 11000
NU2206E C4 30 62 20 55.8 44.0 9500
NU2207E 35 72 23 70.2 56.5 8500
NU2208E M 40 80 23 79.5 64.8 7500
NU2209E C3 45 85 23 83.2 69.5 7000
NU2210E EM 50 90 23 88.5 75.2 6700
NU2211E C4 55 100 25 102 87.8 6000
NU2212E 60 110 28 122 105 5600
NU2213E M 65 120 31 148 128 5000
 

NU23 Series Cylindrical Roller Bearing

Model d(mm) D(mm) B(mm) Dynamic Load(kN) Static Load(kN) Limiting Speed(r/min)
NU2304E C3 20 52 21 46.8 34.0 12000
NU2305E EM 25 62 24 62.2 46.5 10000
NU2306E C4 30 72 27 79.8 60.5 8500
NU2307E 35 80 31 98.5 76.2 7500
NU2308E M 40 90 33 118 92.5 6700
NU2309E C3 45 100 36 142 112 6000
NU2310E EM 50 110 40 170 135 5300
NU2311E C4 55 120 43 198 158 4800
NU2312E 60 130 46 228 185 4500
NU2313E M 65 140 48 255 212 4000
 

NU3 Series Cylindrical Roller Bearing

Model d(mm) D(mm) B(mm) Dynamic Load(kN) Static Load(kN) Limiting Speed(r/min)
NU304E C3 20 52 15 34.5 26.2 12500
NU305E EM 25 62 17 45.8 35.0 10500
NU306E C4 30 72 19 58.2 44.8 9000
NU307E 35 80 21 70.5 54.2 8000
NU308E M 40 90 23 85.2 66.8 7000
NU309E C3 45 100 25 102 80.5 6300
NU310E EM 50 110 27 120 95.8 5600
NU311E C4 55 120 29 140 112 5300
NU312E 60 130 31 162 130 4800
NU313E M 65 140 33 185 150 4300
 

NU4 Series Cylindrical Roller Bearing

Model d(mm) D(mm) B(mm) Dynamic Load(kN) Static Load(kN) Limiting Speed(r/min)
NU406 C3 30 90 23 82.5 61.2 7200
NU407 EM 35 100 25 98.8 73.5 6400
NU408 C4 40 110 27 115 86.8 5800
NU409 E 45 120 29 132 100 5200
NU410 M 50 130 31 150 115 4800
NU411 C3 55 140 33 168 130 4400
NU412 EM 60 150 35 188 148 4000
NU413 C4 65 160 37 208 165 3800
NU414 E 70 180 42 245 195 3400
NU415 M 75 190 45 272 220 3200
 

Frequently Asked Questions

What is NU cylindrical roller bearing and where is it widely used?
What is the difference between NU and NJ cylindrical roller bearing?
Can your NU bearings fully interchange with mainstream brand bearings?
What is your lead time and stock availability for bulk NU bearing orders?
What quality certification and inspection can you provide for large distributors?
Can you customize cage material, internal clearance or special coating for NU bearings?

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Related Links

Bearing Types Roller Bearing Product Center About Our Bearing Factory

Wholesale cylindrical roller bearings set, compatible with SKF, NSK, FAG and INA, featuring NJ308 ECM, NU2210EM, eccentric and brass cage bearings for mining, gearbox and motor applicationsCategory Overview

Cylindrical Roller Bearings are radial rolling bearings with cylindrical rolling elements that make line contact with raceways. They feature high radial load capacity, high rigidity, high-speed capability, and low friction.Most types can accommodate axial displacement between shaft and housing, and some structures allow carrying axial loads. They are widely used in motors, gearboxes, pumps, compressors, machine tools and other heavy‑duty rotating equipment.

Our Series Breakdown

We offer a complete range of cylindrical roller bearing series to suit different positioning and load requirements:

Series Features Typical Applications
NU Series Floating bearing, free axial displacement, high radial load Motors, fans, general machinery
NJ Series Locates shaft in one axial direction, high rigidity Gearboxes, reducers, machine tool spindles
NUP Series Locates shaft in both axial directions, fixed positioning Heavy gearboxes, compressors, pumps
N Series Outer ring with two ribs, inner ring without ribs General industrial transmission equipment
NF Series Single-direction axial location, compact structure Small‑to‑medium gearboxes and motors
RN Series Without outer ring, fits directly into housing bore Hydraulic pumps, construction machinery
RNU Series Without inner ring, fits directly onto shaft Special transmission mechanisms, compact equipment

Core Advantages

  • Extremely high radial load capacity and strong impact resistance
  • High rigidity and excellent high-speed performance
  • Low friction, stable operation, long service life
  • Allow axial thermal expansion of shaft (floating types)
  • Separable structure for easy installation and maintenance
  • Available in open, sealed and precision grades

🛠️ Typical Applications

Widely used in electric motors, gearboxes, reducers, pumps, compressors, machine tool spindles, fans, rolling mills, automotive transmissions, and other heavy‑duty industrial machinery.

PRODUCT TESTING

Bearing Forging

Bearing Forging

Bearing Annealing

Bearing Annealing

Turning Process

Turning Process

Quenching

Quenching

Bearing Assembly

Bearing Assembly

Bearing Clearance Testing

Bearing Clearance Testing

Grease injection

Grease injection

Bearing Marking

Bearing Marking

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