Motor sizing

[ABlearner 2]

Hi Guys, 

It might be an off topic, but I need some help, with motor sizing.

I have to choose a Sew motor with a proper gearhead. I made the calculation, for the speed thats okay. But I got stuck with the loads.

It will be a conveyor, the roller and the product mass altogether is 29 kg.

I  made the calculation for the load inertia check:

Roller moment of inertia (J1);    m2=mass of roller;     d=diameter(mm)

J1=1/8*m2*d^2*2=1/8*8*0,2^2*2= 800 * 10^-4 kgm^2

Belt and material mass = m1 = 21 kg; 

Belt and work moment of inertia (J2):

J2=m1*( π * d)^2/4* π ^2= 2100 * 10^-4 kgm^2

J=J1+J2 = 2900 * 10^-4 kgm^2

They give me a motor with gearhead, sew eurodrive Ka37/T DRS71S4BE05.

This motor performance is 0,37kW, I think its enough, but on the documentetion, I didn't find any data, about the permitted load inertia.

Can anybody help me with this ?

Thanks ahead.