25 May 2022

Compact design integrates motor and gear unit in a single housing

By installing the motor and the gear unit in one single housing, the patented DuoDrive is very lightweight and compact, coupled with very high power density. Image source: NORD DRIVESYSTEMS

Nord Drivesystems has announced its DuoDrive geared motor has now been successfully patented. The company says the completely new, compact design with full integration of motor and gear unit in one single housing is a leap in the development of geared motors.

Nord says the long-term durability and reliability of the innovative solution in terms of design and materials has been successfully proven in months of testing during the development of the DuoDrive, and real pioneering work has been accomplished in the field of geared motors. The integration has been advanced to achieve an optimal utilisation of installation space. Along with the IE5+ motor on which it is based, the encoder, speed feedback and brake are all safely accommodated in the housing.

As a system, the very compact DuoDrive concept can achieve a significantly higher energy efficiency than the already proven drive systems with IE5+ synchronous motor and bevel gear unit. At up to 92%, DuoDrive currently offers the highest system efficiency on the market in this power class, and achieves very high efficiency in the partial load range making it a real cost reducer. The constant motor torque over a wide speed range allows for consistent version reduction and reduction of operating costs. Market-compatible connection dimensions facilitate the replacement and the integration into existing plant designs. The first available DuoDrive size covers gear unit speed ratios of i = 3.24 to i = 16.2 and is designed for output torque ranges of up to 80 Nm and speeds of up to 1,000 rpm. In addition to the high system efficiency, the smooth, unventilated and compact design, and the quiet running with minimum noise emissions are further important features of the new DuoDrive geared motor. Elimination of many wearing parts results in lower maintenance.