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SKF imported bearing size selection

  1. In many cases, the size of the inner hole of the imported bearing has been specifically limited by the structure of the machine or device. No matter whether the working life, SKF imported bearing static load coefficient and economy meet the requirements, the size calculation must be carried out before the final selection of other sizes and structural forms of imported bearings. The calculation includes comparing the actual load of the imported bearing with its load capacity.

  2. The static load of the SKF imported bearing refers to that the imported bearing is static after loading (there is no relative movement between the inner and outer rings) or the rotation speed is very low. In this case, calculate the coefficient of excessive plastic deformation of raceway and rolling element.

  3. Most SKF imported bearing are subject to dynamic load, and the inner and outer rings move relatively. The dimension calculation checks the early fatigue damage coefficient of the raceway and rolling element.

  4. Only in special cases, the nominal service life can be calculated according to DIN ISO 281. For the design that pays attention to economic performance, we should make full use of the bearing capacity of SKF imported bearing as far as possible. In order to make full use of SKF imported bearing, the calculation accuracy of the size selection of imported bearings is more important.

SKF imported bearing
SKF imported bearing
SKF imported bearing

SKF imported bearing casting method and index

  • The position of SKF imported bearing in industrial production needless to say, it is a heavy weight. Therefore, the development of today’s scientific and technological society cannot be separated from the development of SKF Bearing Technology. Entering the bearing market, SKF bearings, domestic bearings, assembly SKF bearings, “Shanzhai SKF bearings” are flying all over the world. 
  • Why do you choose SKF bearings instead of domestic bearings? Why did you choose SKF bearings instead of other SKF bearings? Of course, there are many reasons, but eventually we need to use SKF bearings that meet our own production requirements and are of excellent quality.
  • Now let’s take SKF bearings as an example to talk about why SKF imported bearing are so excellent in quality; Forging of imported SKF Bearing: the imported bearing uses the forging machine to exert pressure on the metal blank, causing the SKF Bearing to produce plastic deformation, so as to obtain the processing method of forgings with certain mechanical properties, certain shapes and sizes. SKF Bearing casting in Japan: the process of melting the metal into a liquid that meets certain requirements and pouring it into the mold.
  • After cooling, solidification and cleaning, the castings (parts or blanks) with predetermined shape, size and performance are obtained. SKF bearings are high-speed precision angular contact ball bearings. This kind of SKF bearings are mainly used in high-speed rotating occasions with light load. The requirements for SKF imported bearing are also quite high. In the process of use, SKF bearings are required to have high precision, high speed, low temperature rise and vibration, and a certain service life. 
  • Such SKF bearings are usually installed in pairs as the supports of high-speed motorized spindles, and are the key accessories of high-speed motorized spindles of internal surface grinders. Main technical indicators:
  •  Accuracy index of SKF Bearing: exceeding grade P4 accuracy of gb/307.1-94

  •  High speed performance index: DMN value 1.31.8x 106 /min

  •  Service life (average): > 1500 H

  • The service life of high-speed precision angular contact ball bearings is closely related to installation, and the following

  • SKF bearings should be installed in a dust-free and clean room. SKF bearings should be carefully selected and matched. Spacer rings for SKF bearings should be ground. On the premise of maintaining the equal height of inner and outer spacer rings, the parallelism of spacer rings should be controlled below 1um; 
  •  SKF bearings should be cleaned before installation. During cleaning, the inner ring slope should be upward, and the hand should be flexible without stagnation. After drying, put the specified amount of grease. If it is oil mist lubrication, put a small amount of oil mist oil; 
  •  Special tools shall be used for SKF Bearing installation, and the force shall be uniform. It is strictly forbidden to knock; 
  • SKF imported bearing should be stored in a clean and ventilated manner without corrosive gas, and the relative humidity should not exceed 65. Long term storage should be regularly rustproof.

For more information, please feel free to contact SKF bearing importer.

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