I’ve got a question regarding an offseason project.
I’ve got a 4kw BLDC motor that I am planning to use in an existing gearbox. The motor has a 10mm dia x 34mm length shaft. In the gearbox does not have any support bearing for the end of the motor shaft. The pinion would usually sit pretty close to the motor as the gearbox housing is about 6mm thick. In order to use this motor in the gearbox I have to add an adaptor plate however, because the mounting patterns are differnet. The adaptor plate is an aditional 8mm thick.
Here is the question: would pushing the pinion farther out on the motor shaft lead to excessive radial loading on the bearings and potential premature motor death?