Double Row Cylindrical Roller Bearings

Our basic design double row cylindrical roller bearings are available in several designs. The major design differences between the bearings are the configuration of the inner and outer ring flanges and the cage design and material.
Double Row Cylindrical Roller Bearings
Double Row Cylindrical Roller Bearings

Two-row, or double-row, cylindrical bearings are designed for additional strength in carrying radial loads. These bearing types are interchangeable so the dimensions and diameter under the rollers (NNU style) and diameter over the rollers (NN style) are held to an ISO/DIN standard. Interchangeability is designed for the ring without the rollers to allow interchange with competitor inner rings.

Series of Double row cylindrical roller bearings

The standard assortment presented in this section includes:

  • NNU design bearings
  • NN design bearings
  • NNUP design bearings

Features of Double row cylindrical roller bearings

  • Double row cylindrical roller bearings three fixed ribs on the outer ring and one 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 bearing and have three fixed ribs on the inner ring that retain the rollers and cage and one 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

Related Bearings

Widi is professional bearing manufacturer in China. You can get all this types of bearing from our company.
Four-row Cylindrical Roller Bearings

Four-row Cylindrical Roller Bearings

Our four-row cylindrical roller bearings are available in several designs. It includes bearings with a cylindrical or tapered bore, as well as open and sealed designs.
Double Row Full Complement Cylindrical Roller Bearings

Double Row Full Complement Cylindrical Roller Bearings

Our double row full complement cylindrical roller bearings includes three open bearings (NNCL, NNCF, and NNC design) and NNF design sealed bearings.
Double Row Cylindrical Roller Bearings

Double Row Cylindrical Roller Bearings

Our double row cylindrical roller bearings are available in several designs with a cylindrical or tapered bore. We provide NNU, NN, and NNUP design bearings.