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Description of the motor
1.1
Features of the 1PM6
Overview
The air-cooled 1PM6 motors have been specially designed for direct mounting on
mechanical spindles. The hollow shaft permits the passage of coolant for tools with internal
cooling.
The shaft is prepared on the non-drive end of the motor for connection of a rotary gland for
input of the coolant.
The 1PM6 motors are rugged and maintenance-free 4-pole induction motors with squirrel-
cage rotors. They have been designed specifically for use in conjunction with the
SINAMICS S drive system.
A fan for providing forced ventilation is mounted either radially or axially (depending on the
version) on the rear of the motor. The direction of air flow is from the drive end to the non-
drive end to keep the exhaust heat of the motor away from the machine tool.
The motors have a built-in hollow shaft measuring system for recording the motor speed and
indirect position.
Figure 1-1
1PM6/1PM4 Hollow-Shaft Motors for Main Spindle Drives
Configuration Manual, PPMS, 04/2008, 6SN1197-0AD23-0BP0
1PM6 motors with radial and axial fans
1
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