Frame sizes, designs and mounting

To ensure a correct and secure coupling between the motor and the gear unit, it is necessary to verify the compatibility of three fundamental parameters:

MECHANICAL FRAME SIZE (Shaft Height H)
The motor’s IEC frame size must match the gear unit’s PAM to ensure the compatibility of mechanical dimensions (shaft height, flange, holes).
Example: IEC 90 = PAM 90 (H = 90 mm)

SHAFT DIAMETER (D)
The motor shaft diameter must match the gear unit’s input bore, typically with j6 or k6 tolerances for a controlled fit.
Verification via micrometer and comparison with PAM data.

FLANGE GEOMETRY (B5 or B14)
The flange type must be identical: B5 and B14 are not compatible, even within the same IEC frame size, as they differ in: flange diameter, hole type, number of holes, and centering ring diameter (spigot diameter).