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Tolerance

Tolerance

The quality of the mold is not only depending on the selection of materials, the definition of the accuracy of the various parts during the construction process and the realization and control of the accuracy during production process are also very important. The commonly used machining tolerance by us are listed below, as reference for customer’s product development. If customers have any questions on size definition, he may consult our technical staff at any time to jointly select the most suitable plan.

Tolerances and Deviations for Contour Parts:

No.
ToleranceDeviation Size Range [mm]
<6
6~18
18~30
30~50
50~80
80~120
120~180
180~250
>250
1
Free Size

±0.05

±0.05
±0.08
±0.12
±0.2
±0.3
±0.4
±0.5
Own Agreements
2
Dimension
0.05
0.08
0.1
0.12
0.15
0.2
0.3
0.4
Agreements

Tolerances and Deviations for Construction Parts:

3
Free Size
Length
Deviation
with 500 ±1/2
Hole Center Distance
Deviation
Diameter

<6

±0.2

6~10

±0.4

10~18

±1.0

18~30

±1.5

Angle
Angle Deviation
Edge Length

<18

±10′

18~80

±20′

>80

±10′

90° Angle
Deviation
When the two rectangular side length a and b has a given length, the tolerance above can be used.
parted by center line
Tolerance
Dimension parted by center line should be marked with the half of tolerance
4
Dimension
spec. condi.
Deviation
The mold designers decides the tolerances according to the conditions and ??indicates in the drawings