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Milled and turned parts

We manufacture according to DIN/ISO 2768mK.

Please keep in mind the tolerances for machined plastic parts. If you require narrower tolerances please get in touch and we will see if we can manufacture these.

Thermal expansion, moisture absorption, and dimensional changes are factors in plastics processing and subsequent storage and rule out the guarantee of precise plastic tolerances.

LIMIT DEVIATIONS FOR LENGTH DIMENSIONS

Limit deviations in mm for nominal dimension range in mm
Tolerance
class
<0,5 0,5-3 3-6 6-30 30-120 120-400 400-1000 1000-2000 2000-4000 4000-8000
f see below ±0,05 ±0,05 ±0,10 ±0,15 ±0,20 ±0,30 ±0,50 - -
m see below ±0,10 ±0,10 ±0,20 ±0,30 ±0,50 ±0,80 ±1,20 ±2 ±3
c see below ±0,20 ±0,30 ±0,50 ±0,80 ±1,20 ±2 ±3 ±4 ±5
v see below - ±0,50 ±1,00 ±1,50 ±2,50 ±4 ±6 ±8 ±12

For nominal dimensions below 0.5 mm, the limit deviations must be indicated directly on the nominal dimension.

LIMIT DEVIATIONS FOR ANGLE DIMENSIONS

Limit deviations in angle units for nominal dimension range of the shortest side in mm
Tolerance
class
<10 10-50 50-120 120-400 >400
f ± 1 ° ± 30 ' ± 20 ' ± 10 ' ± 5 '
m ± 1 ° ± 30 ' ± 20 ' ± 10 ' ± 5 '
c ± 1 ° 30 ' ± 1 ° ± 30 ' ± 15 ' ± 10 '
v ± 3 ° ± 2 ° ± 1 ° ± 30 ' ± 20 '

LIMIT DEVIATIONS FOR ROUNDING RADIUS AND CHAMFER HEIGHTS

Limit deviations in mm for nominal dimension range in mm
Tolerance
class
<0,5 0,5-3 3-6 6-30 30-120 120-400
f see below ± 0,2 ± 0,5 ± 1,0 ± 2,0 ± 4,0
m see below ± 0,2 ± 0,5 ± 1,0 ± 2,0 ± 4,0
c see below ± 0,4 ± 1,0 ± 2,0 ± 4,0 ± 8,0
v see below ± 0,4 ± 1,0 ± 2,0 ± 4,0 ± 8,0

For nominal dimensions below 0.5 mm, the limit deviations must be indicated directly on the nominal dimension.

GENERAL TOLERANCES FOR STRAIGHTNESS AND FLATNESS

General tolerances for straightness and flatness in mm for nominal dimensional range in mm
Tolerance
class
<10 10-30 30-100 100-300 300-1000 1000-3000
H 0,02 0,05 0,1 0,2 0,3 0,4
K 0,05 0,1 0,2 0,4 0,6 0,8
L 0,1 0,2 0,4 0,8 1,2 1,6

GENERAL TOLERANCES FOR PERPENDICULARITY

General tolerances for perpendicularity in mm for nominal dimensional range in mm
Tolerance
class
<100 100-300 300-1000 1000-3000
H 0,2 0,3 0,4 0,5
K 0,4 0,6 0,8 1,0
L 0,6 1,0 1,5 2,0

GENERAL TOLERANCES FOR SYMMETRY

General tolerances for symmetry in mm for nominal dimensional range in mm
Tolerance
class
<100 100-300 300-1000 1000-3000
H 0,5 0,5 0,5 0,5
K 0,6 0,6 0,8 1,0
L 0,6 1,0 1,5 2,0

More details on tolerances:

Thermoplastics with low moisture absorption and low expansion coefficient:


Thermoplastics with low strength, high moisture absorption and high expansion coefficients::

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Semi-finished products

Semi-finished product dimensions are always supplied with +tolerance.

Sawing: + 1 mm
Planing: +-0.2 mm

We will precisely specify all other tolerances in the order confirmation.

Unique labelling of the storage area makes it possible for us to fulfil the FDA ROHS or REACH EU regulation 10/2011. Please simply let us know as soon as possible so that we can correctly separate the products.

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Component geometries

Semi-finished products are usually annealed once, but for some components this is not sufficient to guarantee the flatness of the material and to ensure the best possible dimensional accuracy. To address this, an annealing step can be added after the pre-cutting, because this is the best way to ensure the highest possible dimensional stability for your application:

  • Reduction of internal stresses caused through extrusion or machining.
  • Increase in the crystallinity to improve strength and chemical resistance.
  • Increase in dimensional stability over a wide range of temperatures.

Ask our consultants about this!

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Order processing

Our consultants’ job is to process your order to your satisfaction. You’ll receive an order confirmation within three working days with all of the key details. Please read the order confirmation thoroughly because it contains the specifications that will be used for production. We may also ask you for feedback in the issued order confirmation, after which production will be started. In order to save time, we kindly ask you to read the order confirmation very carefully. Payment conditions are stated on the order confirmation.

Quotes are sent out within four working days.

We can provide mill certificates for your order, in either type 2.1 or 3.1. If you require certificates please request them before we start production.

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Data sheets

While the data may be considered reliable, please note the following: KHP Kunststofftechnik e.K. assumes no liability for the application, use, processing, or other use of the information or products or the consequences resulting therefrom. The buyer assumes full responsibility for application, use, and processing of products and use of the information in addition to all consequences thereof.

Data sheet key (PDF)
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T&Cs

Find our terms and conditions.

T&Cs

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  • Gustav-Hertz-Str. 9
  • 91074 Herzogenaurach
  • +49 9132 - 62614
  • +49 9132 – 733410
  • info@khp-kunststoffe.de
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