VARIBLOC® VU/VZ variable speed geared motors based on SEW AC-motors are simple drives which provide infinitely variable mechanical speed control in the range up to 1:8. They are combined with reduction gearing on variable-speed drives with a low output speed and a high output
torque. The motors can also be used without the reduction gearing, in either a foot or a flange version, to drive the machine directly.
As with all SEW drives, VARIBLOC® VU/VZ variable speed geared motors can also be supplied in a wide range of additional versions, which guarantee perfect adaptation to every application. The U-shaped or Z-shaped power flow (identified by the designations VU
and VZ) and numerous swiveling positions in the variable speed geared motors in combination with the reduction gears result in a wide range of possible versions. It is therefore possible and indeed easy to adapt them to all kinds of different machine designs.
The advantages at a glance:
higher starting torque
high overhung loads of the reduction gears
large number of high-precision reduction ratios in the gears, depending on size
choice of manual or remote speed adjustment
simple operation
Technical data
Size
maximum motor output [kW]
possible force flow
maximum adjustment range for each version*
ventilated
enclosed
VU 01
0.75
U + Z
1 : 6
-
VU 11
1.5
U + Z
1 : 8
1 : 6
VU 21
3
U + Z
1 : 8
1 : 6
VU 31
5.5
U + Z
1 : 8
1 : 6
VU 41
11
U + Z
1 : 6
1 : 4
VU 51
22
only U
1 : 6
-
VU 6
45
only U
1 : 4
-
*The speed adjustment range can be expanded by the use of pole-reversible motors
VARIMOT ® type-series D variable-speed geared motors are suitable for mechanical engineering applications in the output range up to 11 kW when a simple but sturdy variable-speed drive is required.
VARIMOT ® D variable-speed geared motors based on SEW AC motors are sturdy and easy to operate. They provide mechanical, infinitely variable speed adjustment in the ratio range up to 5:1. The motors are combined with reduction gear units to produce variable-speed drives with a high output torque and low output speed. They can also be used without reduction gear units in either a foot or a flange-mounted version to drive a machine directly.
As with all SEW drives, VARIMOT ® D variable-speed geared motors are available in a wide range of additional versions which guarantee perfect adaptation to every application.
The advantages at a glance:
sturdy with increased start-up torque
high approved overhung loads on the reduction gear units
large number of finely tuned gear ratios in the reduction gear units, depending on size
choice of manual or remote speed adjustment
speed selection is possible even in standstill
Technical data
Size
maximum motor output [kW]
maximum setting range*
D 16
1.1
1 : 5
D 26
2.2
1 : 5
D 36
5.5
1 : 5
D 46
1.1
1 : 4
*The speed setting range can be extended by the use of pole changing motors.
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