DIMENSIONAL TOLERANCE:
Dimension (mm) Tolerance (mm)
Upto 25 ± 0.125
25-50 ± 0.25
50-75 ± 0.375
75-100 ± 0.5
100-150 ± 0.75
150-200 ± 1
200-250 ± 1.25
250-300 ± 1.5
FLATNESS:
Dimg Range As CAST (mm) Mechanical Straightened (mm)
Upto 25 mm 0.15 0.1
50 0.2 0.15
75 0.3 0.2
100 0.4 0.25
150 0.55 0.4
200 0.9 0.7
CONCENTRICITY:
Dimension (mm) Tolerance (mm)
25 0.15
50 0.4
75 0.5
100 0.75
150 0.9
200 1
ANGLE :
± 1/2 ° in general
CAST HOLES:
± 1/2 Through Holes L =5*D
Blind Holes L = 2*D
where L is length of hole and D is diameter
SURFACE FINISH :
3.2 TO 6 RA.