Synchronous Motors offer speeds to 30,000 rpm.

Press Release Summary:




Designed for operation with bus voltages to 750 V, IndraDyn H kit motors are optimized for high torque and consist of 3-phase-wound stator and permanent-magnet rotor. They combine advantages of synchronous motor technology with operational characteristics of asynchronous motors, providing up to 6,500 Nm torque. Cooling system is enclosed within stator, and motor windings are protected against thermal overload by integrated temperature sensors.



Original Press Release:



IndraDyn H - Rexroth's New Generation of High-Speed Synchronous Motors - Offers Highest Torque in Its Class and Speeds Up to 30,000 RPM



With their extremely wide constant-output-power (field-weakening) ranges, short ramp-up-to-speed times and low rotor temperatures, these Rexroth motors are ideal for use in main spindles and other high-speed applications.

IndraDyn H synchronous motors from Rexroth are kit motors which have been optimized for high torque without compromising their high speeds. They consist of a three-phase-wound stator and a permanent-magnet rotor.

IndraDyn H motors offer a unique combination of the advantages of synchronous motor technology with the operational characteristics of asynchronous motors. With their extremely wide constant-output-power (field-weakening) ranges, short ramp-up-to-speed times and low rotor temperatures, these motors are ideal for use in main spindles and other high-speed applications. IndraDyn H motors can provide up to 6,500 Nm of torque and can achieve speeds of up to 30,000 rpm. Acceleration times are up to 2.5 times faster than for comparable asynchronous motors.

The innovative cooling system, enclosed within the stator, reduces costs and work for the machine builder while maximizing cooling efficiency. In addition, the power and cooling connections are standardized for quick and easy connections.

IndraDyn H motors are designed for operation with bus voltages of up to 750 V. The motor windings are protected against thermal overload by integrated temperature sensors. IndraDyn H motors, when used with Rexroth's new intelligent digital drive family, IndraDrive, eliminate the need for external protection. Uncontrollable costs associated with the failure of these control electronics are therefore eliminated.

Bosch Rexroth Corporation, a merger of Bosch Automation Technology and Rexroth, is a wholly owned subsidiary of Robert Bosch GmbH. In the year 2002, Bosch Rexroth AG had total revenues of approximately $3.89 billion (3.62 billion Euros) and a worldwide total of around 26,000 employees. In the Americas, Bosch Rexroth had total revenues of $795 million and about 3,000 employees in 2002.

Business units include Industrial Hydraulics, Electric Drives and Controls, Linear Motion and Assembly Technologies, Pneumatics, Service Automation and Mobile Hydraulics. Bosch Rexroth, The Drive & Control Company, offers comprehensive solutions for drives and motion control in 80 countries around the world.

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