1. Provide the heavy radial load carrying capacity as well as
the high rotation speed.
Cylindrical Roller Bearings are bearing in which cylinders are used
as the rolling elements as opposed to balls in ball bearings.
As such, the rollers have a greater (linear) contact area with the
outer ring and are distribute loads across a broader surface.
Subsequently, they have a relatively high radial load capacity and
are suitable for high speeds. Double-row cylindrical roller
bearings have high radial rigidity and are used primarily for
precision machine tools.
2. Available in various types, N, NU, NJ, NF, RN, RNU, etc. Also
available in double row and four row types.
WD single row cylindrical roller bearings, caged, mainly of the NU,
NJ, NF, NUP and N designs.
WD double row cylindrical roller bearings, caged, mainly of the
NNUand NN designs.
WD single row full complement cylindrical roller bearings, mainly
of the NCF and NJG designs.
WD double row full complement cylindrical roller bearings, mainly
of the NNF design.
Types NU, N, NNU, and NN are suitable as free-end bearings. Types
NJ and NF can sustain limited axial loads in one direction. Type
NUP can be used as fixed-end bearings.
3. Optimized design in the rollers and raceway, reduce the stress
and enhance the lifetime. Particularly suitable for support end
The rollers of WD cylindrical roller bearings are key components.
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
optimizes rolling motion of the rollers. The benefits derived from
this compared with traditional designs include enhanced operational
reliability and a greater insensitivity to misalignment.
4. Low noise design, reaches to V1 grade noise level, contributes
to the quieter running of automobile engine and gearbox.
WD cylindrical roller bearings have excellent performance in noise
control. The normal bearing noise is under 65DB. And they are
widely used for automobile engines, gearboxes and precision machine
tools. In some special application which requires extreme low
noise, for example, air compressors, WD successfully controls the
bearing noise under 35DB.
Precision Cylindrical Roller Bearings: NJ/NCF-V Cylindrical Roller