4
Mechanical installation
AD input shaft assembly
Assembly and Operating Instructions – Explosion-Proof Gear Units
87
Type
x
1)
mm
F
R
1)
N
AD2/ZR
193
330
AD3/ZR
274
1400
AD4/ZR
2)
361
1120
AD4/ZR
3300
AD5/ZR
487
3200
AD6/ZR
567
3900
AD7/ZR
663
10000
AD8/ZR
516
4300
1) Maximum load values for connection screws of strength class 8.8. If the center of
gravity distance x increases, the maximum permitted weight F
R_max
of the at-
tached motor must be reduced linearly. If the center of gravity distance x de-
creases, the maximum permitted weight F
R_max
must not be increased.
2) Diameter of the adapter output flange: 160 mm
4.17.4
Cover with backstop AD../RS
NOTICE
If the speed is below the minimum lift-off speed of the drive, the backstop is subject
to wear and heats up.
Possible damage to property.
•
In nominal operation the lift-off speed of the drive must not drop below the spe-
cified minimum.
•
During startup or braking, the lift-off speed of the drive may drop below the min-
imum levels.
Check the direction of rotation of the drive prior to mounting or startup. In case of a
wrong direction of rotation, contact SEW-EURODRIVE.
The backstop is maintenance-free in operation. Backstops have a minimum lift-off
speed depending on the size (see following table).
Type
Maximum locking torque of the
backstop
Minimum lift-off speed
Nm
min
-1
AD2/RS
65
820
AD3/RS
425
620
AD4/RS
850
530
AD5/RS
1450
480
AD6/RS
1950
450
AD7/RS
1950
450
AD8/RS
1950
450
24804134/EN – 05/2018