Double Row Cylindrical Roller Bearing

The double-row cylindrical roller bearing is 1 separable type bearing and easy to assemble and disassemble. The double-row cylindrical roller bearing has 2 optional structures: cylindrical bore and tapered bore(suffix K), and 2 optional designs: NNU and NN. The NN design has an inner ring with 2 ribs and an outer ring without ribs. The NNU design has an inner ring without ribs and an outer ring with 2 ribs.

The tapered bore structure can adjust the radial clearance when the bearing is installed. The double-row cylindrical roller bearing allows axial displacement between the shaft and bearing housing and can be used as a non-locating bearing.

Product parameter

Bearing Number d D B Static   load(kN) Dynamic load(kN) Mass (kg)
NN3052K 260 400 104 969 1810 47.1
NN3052 260 400 104 969 1810 48.5
NN3056K 280 420 106 1020 1950 49.1
NN3056 280 420 106 1020 1950 49.87
NN3060 300 460 118 1180 2250 71.7
NN3060/Y1 300 460 118 1180 2250 71.2
NN3060K 300 460 118 1180 2250 69.6
NN3064K 320 480 121 1250 2450 75
NN3068K 340 520 133 1560 3020 101
NN3068 340 520 133 1560 3020 104
NN3072K 360 540 134 1630 3240 106
NN3076K 380 560 135 1590 3240 110
NN3076 380 560 135 1590 3240 114
NN3176V 380 620 194 2700 5800 221
NN3980K 400 540 108 1240 2400 71.3
NN3080K 400 600 148 1980 3660 143
NN3080 400 600 148 1980 3660 147
NN3092K 460 680 168 2470 5070 204
NN39/560 560 750 140 2370 4860 188
NN6/560 560 780 180 2400 6400 266
NN30/560K 560 820 195 2460 6560 341
NN30/670 670 980 280 4620 9360 597

Features of Double row cylindrical roller bearings

  • Double row cylindrical roller bearings 3 fixed ribs on the outer ring and 1 smooth inner ring. This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, NU Series rolling bearings are used in non-locating bearing units. Also, the NNU Series bearings have no virtually thrust capacity.
  • Bearings of NN design are double row cylindrical roller bearings and have 3 fixed ribs on the inner ring that retain the rollers and cage and 1 smooth outer ring. This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, N Series rolling bearings are used in non-locating bearing units. Also, the NN Series bearings have no virtually thrust capacity.

Application of Double row cylindrical roller bearings

Double row cylindrical roller bearings are industry interchangeable with like-size numbered bearings and are used in such applications as:

  • Gear Drives
  • Crop Shear
  • Rolling Mills
  • Machine Tools

Company Information

We are a professional bearing exporter in China, producing many bearings in different sizes and sizes. We can provide you with excellent service in a wide range of bearings with world-class quality, such as deep groove ball bearings, spherical roller bearings, spherical ball/roller bearings, and cylindrical roller bearings, tapered roller bearings, angular contact Ball bearings, etc. Bearings can also provide OEM services according to customer requirements. We adhere to strict global standards, which is why we can provide you with a wide range of bearings of world-class quality. We have always adhered to the principle of “integrity-based, quality first, customer foremost.” We are ready to use our sincerity to serve every global customer for long-term and win-win cooperation.