Technical data

Rexroth IndraDyn H Introduction to the Product 1-1
DOK-MOTOR*-MBS-H******-PR02-EN-P
1 Introduction to the Product
New technologies with high economic benefits are posing increasingly
extreme demands on the acceleration, velocity and precision of motors.
Rexroth IndraDyn H motors are state-of-the-art, high-speed synchronous
frameless motors, optimized for high torques at high speeds. They
consist of a stator with a three-phase winding and a rotor with permanent
magnets.
Due to a wide constant-power range, the brief startup times and the low
rotor temperature, these motors are especially suitable for use in motor
spindles.
The novel cooling system, which is self-contained in the motor, reduces
expenses for the machine manufacturer and increases the cooling
efficiency and capacity.
IndradynH-Stat_Rot.tif
Fig. 1-1: Examples of IndraDyn H stator and rotor
Rexroth IndraDyn H motors are used mainly as direct drives in motor
spindles. The position of the motor between the main spindle bearings
gives the motor spindle a high rigidity. As a result, the main spindle and
the C axis can be operated with only one drive in grinding machines, for
example.
Motor spindles are used for turning, milling and grinding in machine
tools, transfer lines, processing centers and special-purpose machines.