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VARIBLOC® / VARIMOT® Variable Speed Gearmotor

  • For simple, variable speed applications up to 45 kW (60 hp)
  • Combining VARIBLOC® and VARIMOT® variable speed gear units with reduction gear units of all designs in the SEW-EURODRIVE modular concept creates variable speed drives with a low output speed and high output torque. Combining variable speed gearmotors with helical, parallel shaft helical, helical-bevel and helical-worm gear units has proven effective at low speeds.
  • Variable speed gear units are available with DRS and DRE motors. This means they comply with European and most international efficiency requirements.
  • Your benefits
    • Increased starting torque
    • Large permitted overhung loads of the reduction gear units
    • Large number of finely spaced gear ratios of the reduction gear unit, depending on size
    • Choice of manual or remote speed control
    • Intuitive operation
  • The foot- and flange-mounted versions can also be used to power machines without a reduction gear unit.
  • Speed can be adjusted mechanically, e.g. with a handwheel, or electromechanically using a servo motor.

VU/VZ series

The VU and VZ designs of the VARIBLOC® wide V-belt variable speed gearmotors are used with power ranges of up to 45 kW. Typical speed setting ranges are 1:4, 1:6 and 1:8. The U- or Z-shaped power flow and numerous combination possibilities with reduction gear units mean that these speed gearmotors can be supplied in a broad range of designs. They can easily be tailored to the most diverse machine structures.
Technical data
VARIBLOC® Maximum motor power [kW] Possible power flow Maximum setting range for versions
Ventilated Non-ventilated
VU / VZ 01 0.75 U + Z 1 : 6 -
VU / VZ 11 1.5 U + Z 1 : 8 1 : 6
VU / VZ 21 3 U + Z 1 : 8 1 : 6
VU / VZ 31 5.5 U + Z 1 : 8 1 : 6
VU / VZ 41 11 U + Z 1 : 6 1 : 4
VU 51 22 U only 1 : 6 -
VU 6 45 U only 1 : 4 -

D series

Series D VARIMOT® friction disk variable speed gearmotors are intended for power ranges up to 11 kW and speed setting ranges 1:4 or 1:5. The contact pressure between the driving pulley and the friction ring required for torque transmission is set automatically. The speed control can be adjusted even when the gearmotor is at a standstill.
Technical data
VARIMOT® Maximum motor power [kW] Maximum setting range
D 16 1.1 1 : 5
D 26 2.2 1 : 5