Is there any official reccomened(or limit) value for "motot inertia ratio,max." in 1fk2 motor series?

The value is specified in the 1fl6 motor catalog. (D33)

(x5~x30)

and also i found a table in "dirve optimization guide p.9"

axis type  motor                                       load inertia  ratio

winder                                                     <1:600  stii ok!

Rotary Knife                                            <1:5 recommended!

Web transportation  axes                        < 1:20 recommeded!

(printing,coating,laminating,etc.)

Does this table also apply to s210/1FK2 motor ?

A customer asked for this value to select a gearbox. 

Are there any official data of this?