Q: How about the noise level of your motor and do you have quiet motors?
A: Normally we define the noise level (dB) based on the back ground noise and measure distance. There are two kind noises: mechanical noise and electrical noise. For the former, it's related to the speed and motor parts. For the latter, it's mainly related to the sparks caused by the friction between the brushes and commutator. There is no quiet motor (without any noise) and only difference is the dB value.
Q: Could you tell me the lead time for samples and order?
A: For normal dc motor samples, the lead time is around 10~15days and for gear motor samples, it'll be 15~20days.
If there is special requirements like extended shaft, special reduction ratio, lead time will be longer. For orders, the standard lead time is 35days and this time can be shorter or longer based on different model, period and quantity.