Multi-row full complement cylindrical roller bearings with four or eight rows of rollers

Multi-row full complement cylindrical roller bearings

1. Cylindrical roller bearings are available in many designs, dimension series and sizes. The majority are single row bearings with a cage. Single and double row full complement bearings (without cage) complete the standard assortment for general engineering. Bearings with a cage can accommodate heavy radial loads and operate at high speeds. Full complement bearings are suitable for very heavy radial loads at moderate speeds.

2. In cylindrical roller bearings, the rollers are a key component. Their geometry, the so-called logarithmic profile, provides an optimum stress distribution in the contact zones in the bearing. Their surface finish maximizes lubricant film formation and optimises rolling motion of the rollers. The benefits derived from this compared with traditional designs include enhanced operational reliability and a greater insensitivity to misalignment.

3. In a single row cylindrical roller bearing, the rollers are always guided between the integral "open flanges" on one of the rings. These "open flanges" combined with the specially designed and surface treated roller ends, provide improved lubrication, reduced friction and consequently lower operating temperature.

4. The ring with the integral flanges together with the cylindrical roller and cage assembly can be separated from the other ring. This results in easy mounting and dismounting, particularly where the load conditions are such that interference fits are required for both rings.

5. Single row cylindrical roller bearings can accommodate heavy radial loads and high speeds. They are manufactured in several different designs, the main difference being in the configuration of the flanges. The most popular are the NU, N, NJ and NUP designs.

6. Applications:
Electric motor, automotive, industrial transmission, double-row cylindrical roller bearings are greatly used for the spindles of machine tools

7. Models available:
1) NU, NJ, NUP and N design, single row cylindrical roller bearings, caged
2) NNU and NN design, double row cylindrical roller bearings, caged
3) Multi-row cylindrical roller bearings, caged.
4) NCF and NJG design, single row full complement cylindrical roller bearings
5) NNF desgin, double row full complement cylindrical roller bearings
6) Multi-row full complement cylindrical roller bearings, with four or eight rows of rollers.

Designations
FC3045120, 672730, FC3246130, 672832Y, 672732KU, FC3248124, FC3248168, FCD3446160, 672734, FC3450170Q1/HG2YA4, FC3452120, FC3652124, FC3652168FC3652168/YA3, FC3652168Q1/HG2YA4, FC3652180, 672838, FC3854168, FC3854168/YA3, FC3854168Q1/HG2C9YA4, FC3854170/YA3
672738, FC4054170Q1/YA3, FC4054170Q1/HG2C4Y, FC4056188, FC4058192, 672742, 672742U, FC4462192/YA3, FC4462192, FC4462225, 672844, FC4468200/YB2, FC4666206/YA3, FC4866220/YA3, FC4866220/YA3FC4868192A, FC4872220, FC4872220A/C4YA3, FC482220Q1/HG2YA4, FC5072220/YA3, FC5272200/YA3B2, FC5274200, FC5274220/YA3, FC5274220, FC5476230/YA3, FC5478236, FC5678220, FCDP5678275, 572856W, 672760, 672760YFC6490240/YA3, 972770K, FCD72102370, FCDP74104380, 672780
FCDP88124450, FCDP88124450/YA6, FCD96130450, FC100134450/P69, FCD100134450/P69HCYA3, 6727/570, 66721/630K, FCDP160216700/HC, CDP190260850/C9HCYA3, 6727/950, E6727//950K

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