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Technical description
Air gap
7.2
Overall mounting height
7.2.1
70
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The air gap is created between the bottom of the coil part and the
top of the magnetic plate. The air gap for Beckhoff linear motors is
0.5 mm while maintaining the overall mounting height.
You can increase the overall mounting height and the associated air
gap in case of tolerance deviations. Tolerance deviations can result
from:
• deviations in parallelism or
• deviations in the evenness of the mounting surface
Be aware of performance losses with increased air gap
Increasing the overall mounting height or the air gap may have per-
formance implications. These follow a non-linear function. Please
refer to the diagram in Chapter: "Dependencies", [Page 71].
Avoid reducing the air gap
Reducing the air gap increases the attractive forces between the
coil part and the magnetic track. This requires larger guides and a
stiffer design of the machine or system.
The following table and figure provide information about the overall
mounting heights of the individual series:
Series
AL802x
AL804x
AL806x-0xxx
AL806x-1xxx
Position
1
2
3
4
AL8000
Mounting height "X" [mm]
40 ± 0.1
40 ± 0.1
45 ± 0.1
47 ± 0.1
Description
Machine slide
Coil part
Magnetic plate
Machine bed
Version: 1.7
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