is very difficult to maintain the speed accelerating engine of wind
turbine installed at high height, so the life and reliability of the
speed accelerating engine bearing are very high.In
recent years, the wind turbine is becoming larger and larger. In order
to reduce the load of the tower, it is attempted to make the generator
cabin small and light. Therefore, the demand for small and high load
capacity bearings is further increased.
order to meet this demand, the cylindrical roller bearing with high
load capacity developed (as shown in Fig. 1) adopts the rolling body
spacer to replace the cage, so it does not destroy the rotation
performance and increases the load capacity, and its rated life reaches
more than 1.5 times of the original product.
Fig. 1 Cylindrical roller bearings with high load capacity
Structure and characteristics of high load capacity cylindrical roller bearings:
The new product has a resin ring between the rollers, which prevents them from touching each other.And
on the separate rings, because the tension produced by the clutch and
aggregation of the rollers does not work, the thickness can be changed,
so the size and number of rollers can be increased.(as shown in figure 2)
Fig. 2 Structure comparison of the new product and the original product
the performance comparison between the new product and the original
product, the new product's high-load capacity cylindrical roller bearing
has the following advantages:
1, long life
size and number of rollers reach the best, so that the load capacity is
increased, the rated life of the bearing is more than 1.5 times of the
rated life of the original size of the same bearing with cage.
is better to optimize the shape and guide method of the spacer to
prevent the roller from contacting each other in the fully loaded roller
bearing, and realize the same allowable rotation speed and abrasion
resistance as the bearing with the cage.
if the inner ring is removed without the roller falling off, the inner
and outer ring components can be installed separately for easier
installation on the machine.