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BEARING CALCULATION

Calculating life expectancy determines the bearing solution with consideration of bearing material fatigue under defined operating conditions. Calculation procedures as per DIN ISO 76 (static load rating) and DIN ISO 281 (dynamic load rating and life expectancy).

GLOBUS BEARING CALCULATION PROGRAM FROM GMN

Globus, GMN’s ball bearing calculation program, allows for computer-aided calculation and the selection from a broad product range in consideration of the life expectancy of various possible solutions.

Click here to download Globus.

 

 

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CALCULATING LIFE EXPECTANCY

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AXIAL AND RADIAL FACTOR

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LIFE EXPECTANCY VALUE

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BEARING FREQUENCIES

STRUCTURAL SOUND LEVEL

Design and geometry of the individual parts, as well as the design of the entire bearing define bearing frequencies. The characteristic structural sound level of a ball bearing is composed of the sum of all bearing frequencies.

Body noise-related factors:

  • Shape accuracy and surface quality of running tracks and balls
  • Cage design
  • Cleanliness and type of lubricationBody noise level
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Structure-borne noise level 

FREQUENCY CALCULATION

One can determine bearing vibrations on the basis of structural sound level tests which allow to make conclusions about surface quality (waviness) in the bearing rings and balls.
Low structural sounds are the result of high smoothness as well as low friction, and predict high performance and long life expectancy of the bearing.

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