To Next Page

To Previous Page

4.9 Balancing

4.9.1 Requirements

Requirements placed on the process when balancing mounted components - especially belt

pulleys

In addition to the balance quality of the motor, the vibration quality of motors with mounted belt

pulleys and coupling is essentially determined by the balance quality of the mounted

component.

If the motor and mounted component are separately balanced before they are assembled,

then the process used to balance the belt pulley or coupling must be adapted to the motor

balancing type.

For asynchronous motors, a di󹪜erentiation should be made between the following balancing

types:

• Half-key balancing (an "H" is stamped on the shaft face)

• Full-key balancing (an "F" is stamped on the shaft face)

• Smooth shaft end (no keyway)

The balancing type is coded in the order designation.

Note

Machining the feather key

In the case of a half-key balanced shaft end and short output element, remove if necessary the

part of the feather key which protrudes out of the output element and beyond the shaft contour.

This is urgently recommended at speeds above 1000 r/min, and where the balance quality must

comply with high demands.

For the highest demands placed on the system balance quality, we recommend that motors with

smooth shaft (without keyway) are used. For motors balanced with full key, we recommend belt

pulleys with two keyways on opposite sides, however, with only one key in the shaft end.

Mechanical properties

4.9Balancing

1PH8 SIMOTICS M main motors

140 Con󹪝guration Manual, 12/2022, A5E51895839A

Siemens SIMOTICS M-1PH8 Configuration Manual

Other manuals for Siemens SIMOTICS M-1PH8