× × + + × ×
=
× + + ×
3 3
2m,1* 1* 2rad,acc,1* 2m,n* n* 2rad,acc,n*
3
2rad,eq*
2m,1* 1* 2m,n* n*
n t F ... n t F
F
n t ... n t
The following apply to the bearing service life L
10h
(ED
10
≤ 40%):
L
10h
> 10000 h with 1 < M
2kN
/M
2k*
< 1.25
L
10h
> 20000 h with 1.25 < M
2kN
/M
2k*
< 1.5
L
10h
> 30000 h with 1.5 < M
2kN
/M
2k*
For different duty cycles:
10
10h 10h(ED 40%)
10
40%
L L
ED
=
> ×
7.6.3 Recommendation for radial shaft seal rings
For a duty cycle > 60% and higher surrounding temperatures, we recommend radial shaft seal rings made of
FKM at the output.
Properties:
• Excellent temperature resistance
• High chemical stability
• Very good resistance to aging
• Excellent resistance in oils and greases
• For use in the food, beverage and pharmaceutical industries
Leak-proofness
Our gear units are equipped with high-quality radial shaft seal rings and checked for leaks. However, a leak
cannot be fully ruled out over the length of use of a gear unit. If you use a gear unit with goods incompatible
with the lubricant, you must take measures to prevent direct contact with the gear unit lubricant in case of a
leak.
7.6.4 Reverse operation
To ensure lubrication for circulating gearing parts during cyclic reverse operation from ±20°to ±90° at the
output, pay careful attention to the position of the output shaft for the horizontal mounting of the gear
unit, as shown in the diagrams below. The images show the center position of reverse operation. Cyclic re-
verse operation ≤±20° on request.
Solid shaft without feather key Solid shaft with feather key
1 Position of the mark: top 1 Position of the feather key: top
Notes
• If you use the solid shaft without a feather key (G), you must note the position of the mark during as-
sembly.
• As an alternative, you can use the solid shaft with a feather key (P). In that case, the feather key func-
tions for position orientation. For a backlash-free connection, also use a clamp.
7.6 Project configuration 7 PKright-angle planetary geared motors
220
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