Additional features
IEC flange-mounted motor with boreholes /FF

IEC flange motor with bores
Unit designation /FF

Description
The design /FF is a variant with through bores in the flange, comparable to IEC type of construction B5.
The flange dimensions for 4-pole motors with Standard Efficiency (DRS), High Efficiency (DRE) or Premium Efficiency (DRP) are based on the power rating according to the standard.
Flange combinations deviating from the standard are given the unit designation /FL (see below).
If the motor size deviates from the standard, the flange size is added accordingly: e.g.: DRS90L4/FF100M