Request for FIT0450 motor parameter value (K, J, b, L)

 Dear DFRobot Technical Support,

I am currently using the FIT0450 DC Motor with Encoder (SKU: FIT0450) in my project, and I was unable to find its K,L,b,J value in the datasheet or on the product page. Could you please provide the K, L, b, J specification of this motor?

  K (Back EMF constant), L (Inductance), b (viscous friction constant), J (moment of inertia) 

Thank you for your support.

Best regards,

Yun