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Speed of Bearings

Speed of Bearings

  • Limiting Speed of Bearings

The rotation of the rolling bearings is limited to certain limits. During operating condition the increase in speed of the bearing also led to the increase of temperature because of the friction. The maximum speed at which bearing can be operated continuously without failure and excessive heat generation, such speed can be determined by the formula called as limiting speed of the bearings. The factors which affect the limiting speed of the bearings are, bearing type and size, cage form and material, applied load, lubrication method, and heat dissipation method including design of the bearing’s surroundings.

The limiting speeds can be given as C/P ≥ 12.5 and Fa /Fr ≤ 0.25 for the bearings of standard design and subjected to normal loads.

Different lubricants are used for different operating speed. Lubricants used for the high speed have different characteristics. When the limiting speeds increases to more than 70 % of the bearing limiting speed special type of oil or lubricants should be used, else contact NIBL.

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White Paper – Speed of Bearings

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