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Quality control A.F.B.M.A.* GRADE TOLERANCES AND TERMINOLOGY. Translate in INCH
 
GRADE TOLERANCE CHART Print the .pdf file
 
A.F.B.M.A.
grade
Diameter Tolerance
per Ball Sphericity
Diameter Tolerance
per Unit Container
Basic Diameter
Tolerance
Surface Roughness Ra
  UM UM UM UM
3 0.075 (+ /-) 0.1 (+ /-) 0.5 0.007
4 0.100 (+ /-) 0.1 (+ /-) 0.5 0.007
5 0.125 (+ /-) 0.15 (+ /-) 1 0.008
10 0.250 (+ /-) 0.25 (+ /-) 2.5 0.010
15 0.375 (+ /-) 0.4 (+ /-) 2.5 0.010
25 0.625 (+ /-) 0.7 (+ /-) 2.5 0.010
50 1.250 (+ /-) 1.25 (+ /-) 5 0.020
100 2.500 (+ /-) 2.5 (+ /-) 10 0.020
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