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Steel milling balls

 
  • Sizes for ball mills: 30, 40, 50, 60 mm
  • Standards: GOST 7524-89, DSTU 3499-97
  • It is also possible to produce steel balls with hardness on the surface not less than 56 HRc ensuring capacity hardness is not less than 55 HRc.

    Tentative diameter, mm
    Nominal diameter, mm
    Limiting deviation as per nominal diameter, mm
    Calculative nominal mass, kg
     
    30
    31.5
    ± 2
    0.128
     
    40
    41.5
    ± 2
    0.294
     
    50
    52.0
    ± 3
    0.58
     
    60
    62.0
    ± 3
    0.98
     

     

    The following groups of steel balls are produced:

    1. of normal hardness of general use;
    2. of extra-high hardness of general use;
    3. of high hardness;
    4. of super-high hardness.

    Hardness HRC (HB) for groups, not less

    1

    2

    3

    4

    4

    on the ball surface

    for 1/2 rad.

    43 (401)

    49 (461)

    55 (534)

    55 (534)

    45 (415)

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