Increase stepper motor voltage past rated

[DannyMoretz]

So I have a 28BYJ48 stepper motor... it is rated at a voltage of 5V. I would like to optimise its speed and torque, which could be done through increasing voltage, but I know that an increase in voltage means more current i.e. will get a little hot. My question is... if I do run it at a high speed, past the rated speed, will it get that hot.. compared to say running at a speed I could only achieve with rated ?
Thanks guys

 

[Vanadium 50]

It will get hotter running past its rating than at its rating.