TOLERANCES
FOR
PLASTICS
ACCORDING
TO DIN 16901 |
Deviations from the nominal dimensions are unavoidable in the manufacture of plastic shapes.
There are various reasons for the deviations:
a) Processing parameters. These are dependent on:
• the evenness of the shape
• the setting of the machine
• the temperature of the tools
• the distortion of the tool under pressure
b) The condition of the tool:
• manufacturing tolerances for tool dimensions (see DIN 16749)
• wear on tools
• deviations in the position of movable tool parts.
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The tolerances for this norm have been laid down taking into account these factors and numerous measurements in practice.
The plastics in this norm are divided into tolerance rows. All the plastics used by Rose+Bopla for standard enclosures are in row 130, for which tolerances given below apply. The tolerances apply on the basis of the machining shrinkage working into the tool only for the appropriate enclosure with the standard material stated. |
over
up to |
0
1 |
1
3 |
3
6 |
6
10 |
10
15 |
15
22 |
22
30 |
30
40 |
40
53 |
53
70 |
70
90 |
| A |
±0.18 |
±0.19 |
±0.20 |
±0.21 |
±0.23 |
±0.25 |
±0.27 |
±0.30 |
±0.34 |
±0.38 |
±0.44 |
| B |
±0.08 |
±0.09 |
±0.10 |
±0.11 |
±0.13 |
±0.15 |
±0.17 |
±0.20 |
±0.24 |
±0.28 |
±0.34 |
over
up to |
90
120 |
120
160 |
160
200 |
200
250 |
250
315 |
315
400 |
400
500 |
500
630 |
630
800 |
800
1000 |
| A |
±0.51 |
±0.60 |
±0.70 |
±0.90 |
±1.10 |
±1.30 |
±1.60 |
±2.00 |
±2.50 |
±3.00 |
| B |
±0.41 |
±0.50 |
±0.60 |
±0.80 |
±1.00 |
±1.20 |
±1.50 |
±1.90 |
±2.40 |
±2.90 |
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A = Dimensions which are not tool specific are those formed by the interaction of movable tool parts, e.g. wall thicknesses and floor thicknesses or dimensions which are affected by
additives or pushers.
B = Tool-specific dimensions are those in the same part of the tool. |
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*Important: We assume no liability for quoted standards! |
We have
attempted to present the information about
our enclosures on this website in a
straight-forward manner. We offer this
information as accurate at the time of
publication. Specifications are subject to
change without notice. Rose+Bopla Enclosures
is not responsible for inadvertent errors. |
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©2008 Phoenix
Mecano Inc., 7330 Executive Way, Frederick,
MD 21704, 301-696-9800,
rbinfo@pm-usa.com |
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