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SCHNORR® Load Washers acc. to DIN 6796
The term load washers refers to a specialty
version of a disc spring or Belleville washer
used to improve security of a bolted
connection. They prevent a loosening of the
connection by e.g. setting losses in that their
own spring load can maintain the initial load of
the connection. This makes them very suitable
for mostly axially loaded short screws. They are
not effective against coming loose due to
changing cross loading.
Particular advantages of the
SCHNORR®
Load Washer
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High axial load
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Optimum compensation for setting in the
joint
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Reduction of the dynamic loading of the
screw due to higher elasticity of the joint
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Uniform concentric loading and high safety
through a high degree of spring action
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Suitable for captive fitting on a wide range
of bolts (Combi-Bolts)
These
SCHNORR®
load washers have been specially designed for
high-strength bolts up to a strength class 8.8
to 10.9 acc. to DIN ISO 898 part 1. This
represents the most powerful form of safety
washer in the form of a disc spring.
The loads of these washers when pressed flat
reach 70 to 90 % of the corresponding bolts of
the strength class 8.8.
These load washers conform to DIN 6796 and are
designed for high demands on the protection of
bolt joints. As a highly progressive load
increase occurs at the end of the spring
deflection when the washer is flattened the load
has been indicated as double the calculated
value. Tests have shown that these values are
comparable with the measured values.
For the protection of bolted joints only that
load is available which remains after the washer
has initially set. The table in our brochure
indicates the respective minimum height after
the initial loading of the washer. Thus the
maximum loss of height due to setting is
limited.
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