I bought two “47:1 Metal Gearmotor 25Dx52L mm with 48 CPR Encoder” last week, and I need its Datasheet, because I need some characters about its item (Inertia, resistance, counter EMF, electromagnetic torque, etc). Have you this documents?
PS: I’m sorry for my bad bad English
We do not have datasheets for our gearmotors. You can find all of the information we have available for them under the Description and Specifications tabs of their product pages. Note, you can approximate some of the characteristics you are looking for from that information. For example, the electrical resistance of the motor can be approximated by dividing the rated voltage by the stall current (at the rated voltage). You might be able to measure the other parameters that you asked for, but I am not sure how.