The following are the general casting accuracy that can be achieved by us. Closer tolerances can be obtained depending on part design or the use of special procedures or secondary operations. Contact us to know about your more specified requirements. The following  standards is Reference to international standard: VDG P690.

(A) Linear Tolerances

Nominal size
mm

D1 Tolerance
(general dimensions)

D2 Tolerance
(some functional dimensions)

0 to 6

±0.15

±0.12

6 to 10

±0.18

±0.14

10 to 18

±0.22

±0.17

18 to 30

±0.26

±0.20

30 to 50

±0.40

±0.31

50 to 80

±0.45

±0.37

80 to 120

±0.55

±0.44

120 to 180

±0.8

0 ±0.65

180 to 250

±1.20

±0.95

250 to 315

±1.30

±1.10

315 to 400

±1.80

±1.40

 

(B)Tolerance for straightness, flatness, parallelism, shape

Precision class

Length of the tolerated element

to 25 mm

25 to 50 mm

up to 50 mm

Allowed difference

D1

0.15 mm

0.25 mm

0.6%

D2

0.10 mm

0.20 mm

0.4%

(C) Tolerance for angle values and right angles

Precision class

Nominal dimensions

to 30 mm

30 to 100 mm

100 to 200mm

up to 200mm

D1

Allowed deviation

minute degree

30

30

30

20

mm / 100 mm

0.87

0.87

0.87

0.58

D2

Allowed deviation

minute degree

30

20

15

15

mm / 100 mm

0.87

0.58

0.44

0.44

(D) Surface quality according to ISO R 468, DIN 4769 and VSM10321

Ra Rz Rt
N9 6.3 23-32

25-38