Roller

Name Roller material GCR15 hardness HRC60-65 excircle tolerance 2um length tolerance 30um verticality ≤ 15um end runout ≤ 15um roundness ≤ 1um surface roughness ≤ Ra1um

Since the speed increaser of the wind turbine generator is installed at a high place and is difficult to maintain, the life and reliability of the speed increaser Bearing are required to be high. In recent years, the wind turbine generator has become larger and larger, and the generator cabin has been reduced in size and weight in order to reduce the load on the tower. In order to meet this demand and the development of high load capacity Roller Bearing, the use of rolling body washers instead of the retainer, so in the case of no damage to the rotation performance to increase the load capacity, rated life reached the previous product.More than 1.5 times, then, let's learn about the structure and characteristics of Roller Bearing.

In order to prevent contact between the Rollers, a gasket made of a resin material is designed between the Rollers. In addition, in the spacer rings which are independently separated from each other, since the tension caused by the clutch distribution of the Rollers does not act, the thickness can be reduced, and the size and number of the Rollers can be increased.

Structural comparison of new products and old products Through the performance comparison of new products and old products, the high load capacity of new products Roller Bearing has the following advantages.

Optimize the size and number of long-life rollers, increase the carrying capacity, and Bearing the rated life not less than 1.5 times the Bearing rated life of the original size cage.

2. High speed should prevent Roller from contacting in the full Roller Bearing, optimize the shape and guiding method of the isolation ring, and achieve the same allowable speed and scratch resistance as the Bearing with the cage.

3. Even if the inner ring is removed without falling off the operational roller, the inner ring and outer ring components can be installed separately to facilitate installation on the machine.

Precautions for the use of Roller:

1, in daily use, the damage to the Roller Bearing is considerable, peeling, indentation, corrosion, cracks, wear and so on reflected in the Bearing vibration measurement. Therefore, the magnitude of the vibration can be measured by a special Bearing vibration measuring instrument, and the specific condition of the abnormality can be inferred from the frequency distribution. The measured values vary depending on the operating conditions of the Bearing and the orientation of the sensor device, so it is necessary to analyze and compare the measured values of each machine in advance to determine the criteria.

Lubricants that are harmful to Roller Bearing at high temperatures. Bearing overheating can sometimes be attributed to the Bearing smoothing agent. If the Bearing is continuously transferred at a temperature exceeding 125 for a long time, the Bearing life will be reduced. The causes of high temperature Bearing include insufficient smoothness, too smooth, impurities in the Bearing track, and long-term overload operation of the Bearing.

3, invisible dust into the Roller Bearing, will also cause Bearing wear, vibration, noise. Roller Bearing and its surrounding accessories should be kept clean, especially dust and dirt, articles and working environment need to be kept clean.

4. When using the device, please pay attention carefully, do not squeeze hard, do not hit the Bearing directly with a hammer, and do not transmit pressure through the roller.

5, the use of appropriate, correct device, try to use special heaters and puller and other special items, try to prevent the use of cloth and short fiber and other items.

6. To prevent Roller from rusting, when picking up the Bearing directly, please wash your hands and apply mineral oil before operation. Special attention should be paid to rust prevention in rainy season and summer. However, under some special operating conditions, Roller Bearing get better traditional calculation life, especially under light load. The premise of these special operations is that the rolling surface is effectively separated by a smooth oil film, and the pollutants are restrained to cause surface damage.