DIMENSION AND WEIGHT CONVERSION CHART
Size Nos / kg Weight of 1000
balls in kg.
  Size Nos / kg Weight of 1000
balls in kg.
Inch mm Inch mm
3/32"   2.381 18058 0.055 5/8" 15.875     61 16.393  
    2.500 15612 0.064   16.000 60.00 16.667
7/64"   2.778 11478 0.087 21/32" 16.669 53.00 18.868
    3.000 9035 0.111   17.000 50.00 20.000
1/8"   3.175 7622 0.131 11/16" 17.463 46.00 21.739
    3.500 5689 0.176   18.000 42.00 23.809
5/32"   3.969 3902 0.256 23/32" 18.256 40.00 25.000
    4.000 3811 0.262 3/4" 19.050 35.00 28.571
    4.500 2677 0.374 25/32" 19.844 31.00 32.258
3/16"   4.763 2258 0.443   20.000 30.50 32.787
    5.000 1951 0.513 13/16" 20.638 28.00 35.714
7/32"   5.556 1422 0.703   21.000 26.00 38.462
15/64"   5.953 1155 0.866 27/32" 21.431 25.00 40.000
    6.000 1129 0.886   22.000 23.00 43.478
1/4"   6.350   953 1.049 7/8" 22.225 22.00 45.455
17/64"   6.747   794 1.259   23.000 20.00 50.000
    7.000   711 1.406 29/32" 23.019 20.00 50.000
9/32"   7.144   669 1.495 15/16" 23.813 18.00 55.556
5/16"   7.938   487 2.053   24.000 17.64 56.689
    8.000   476 2.101 31/32" 24.606 16.37 61.087
11/32"   8.731   366 2.732   25.000 15.61 64.061
    9.000   334 2.994 1" 25.400 14.88 67.204
3/8"   9.525   282 3.546   26.000 13.88 72.046
    10.000   243 4.115 1 - 1/16" 26.988 12.41 80.580
13/32" 10.319   222 4.505   28.000 11.11 90.009
  11.000   183 5.464 1 - 1/8" 28.575 10.45 95.694
7/16" 11.113   177 5.650   30.000   9.03 110.742  
29/64" 11.509   160 6.250 1 - 3/16" 30.163   8.89 112.486  
15/32" 11.906   144 6.944 1 - 1/4" 31.750   7.62 131.234  
  12.000   141 7.092   32.000   7.44 134.409  
31/64" 12.303   131 7.634 1 - 5/16" 33.338   6.58 151.976  
1/2" 12.700   119 8.403   34.000   6.20 161.290  
  13.000   111 9.072 1 - 3/8" 34.925   5.72 174.825  
17/32" 13.494     99 10.101     35.000  5.68 176.056  
  14.000     89 11.236     36.000   5.22 191.571  
9/16" 14.288     84 11.905   1 - 7/16" 36.513   5.01 199.601  
  15.000     72 13.889     38.000  4.44 225.225  
19/32" 15.081     71 14.085   1 - 1/2" 38.100   4.41 226.757  
The weight specified above is based on the SAE 52100 steel balls.1Kg = 2.205 lbs (USA)
The multiplying factor for obtaining the approximate weight of 1000 balls, in Kgs; for other materials is as given below.
 
 


 
Important Links:

Grades of balls

   No of Balls per /Kg

Burnishing Applications I.S. 2898 (INDIA),I.S.O. 3290 Standard, G.B 308 (G.B)
  How Balls  are made ANSI/AFBMA- (USA),  
    AFNOR NF E 22-381 - (FRANCE)
    DIN 5401 (GERMANY)

| Home |  | About us |  | Steel ball |  | Bicycle parts |  | Feedback |  | Contact us |

 | Free Wheels  Chain Wheel  Hub Components  +  Fork Fitting  Brakes & Parts  +  B.B.Fitting   |