Numerical - Static capacity, given diameter & number of balls in bearings

Q.  What will be the static capacity of single-row deep groove ball bearing having 10 balls of 15 mm?
(Assume K = 62 N/mm2)
- Published on 23 Sep 15

a. 25900 kN
b. 124 kN
c. 31.00 kN
d. 27.900 kN

ANSWER: 27.900 kN

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    Discussion

  • Sravanthi   -Posted on 01 Oct 15
    Given: Number of balls = 10, diameter of balls = 15 mm, K = 62 N/mm2

    Stribeck's equation to calculate basic static capacity of ball bearings is Co = (KZd2) / 5 & basic static capacity of straight roller bearings is Co = (KZdL) / 5

    Formula: Basic static capacity of ball bearings (Co) = (KZd2) / 5

    Substituting the given values we get,

    (Co) = (KZd2) / 5
    = (62 x 15 x 102) / 5
    = 27900 N

    Basic static capacity of ball bearings = 27900 N

    = 27.900 kN

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