40
1019659 11/2014
Table 40.1
5.5.2 Grease Reservoir
For assembly please ensure that the grease reservoir is filled up with grease (dimension c and ø d in illustration 40.2).
c* Horizontal and vertical – Wave Generator down
c** Vertical – Wave Generator up
See illustration 39.2
Size
14
17
20
25
32
40
50
ø a
38
45
53
66
86
106
133
b
6.5
7.5
8
10
13
16
19.5
c*
1
1
1.5
1.5
2
2.5
3.5
c**
3
3
4.5
4.5
6
7.5
7.5
ø d
16
26
30
37
37
45
45
Illustration 40.2
ø
a
Countersink for mounting bolt heads
5.5.3 Grease Change
To change the grease the component set should be completely disassembled and cleaned before regreasing. Fresh grease should
be applied generously to the inside of the Flexspline, the Wave Generator bearing, the Oldham coupling and the teeth of the
Circular Spline and Flexspline.
In illustration 40.3, the grease change interval depending on the grease temperature is given. The number of allowable
revolutions of the input shaft which represents the grease change interval can be estimated as shown in the example. This
means, that for a temperature of SK-1A or SK-2 grease of 40° C a change should take place after approx. 8.5 x 10
8
revolutions
of the input shaft. All grease change data refers to rated speed and rated torque.
Illustration 40.3
Grease temperature [°C]
1E+10
1E+09
1E+08
Number of W
ave Gener
at
or r
evolutions
20 40 60 80 100 120 140
L
GT
= Number of Wave Generator revolutions until grease change
L
GTn
= see diagram
T
r
= Rated torque
T
av
= Average torque
L
GT
= L
GTn
.
(
)
3
T
r
T
av
1E+08
1E+09
1E+10
20
40
60
80
100
120
140
Flexolub A1
4B No. 2
SK1A, SK2
Equation 40.4
