VARIBLOC® / VARIMOT®: Variable Speed Geared Motors

Ideal for simple variable speed applications, creating low output speed and high output torque. Compatible with motor power outputs from 0.75kW to 45kW.

Product Description


Variable Speed Geared Motors

For simple variable speed applications up to 45kW (60HP).

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.

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 – VARIBLOC®

The following list provides the maximum motor power, which can be utilised with the VU/VZ series of variable speed gear units.

  • VU / VZ 01: 0.75kW
  • VU / VZ 11: 1.5kW
  • VU / VZ 21: 3kW
  • VU / VZ 31: 5.5kW
  • VU / VZ 41: 11kW
  • VU 51: 22kW
  • VU 6: 45kW

The VU and VZ designs of the VARIBLOC® wide V-belt variable speed gearmotors are used with power ranges of up to 45kW. 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.

D Series – VARIMOT®

The following list provides the maximum motor power, which can be utilised with the D series of variable speed gear units.

  • D 16: 1.1kW
  • D 26 11: 2.2kW

Series D VARIMOT® friction disk variable speed gearmotors are intended for power ranges up to 11kW 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.

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.

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