Re: NEMA 34 motor mounting question

Hi Hans,

The raised section is the alignment section.
It should be machined and your relief should be machined so it is a
tight fit.

The holes for bolting are to keep the unit it place, not for
alignment purposes.


Dave

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Hans Wedemeyer <xyz@h...>
wrote:

> I about to mount a NEMA 34 motor, it has a square front plate with

four equally space mounting holes.

> The hole diameter is 0.218 which seems sloppy for 10-32 and too

tight for 12-32.

> I feel like I should be using 12-32.
> Is it normal to expect the end user to drill these mounting hole to

suit !

>
> Next question:
> The front mounting plate is not complete flat, it has a raised

portion (0.06") and round (2.872 diameter) .

> When I mount this to a plate I will have to remove that same amount

of metal ( and a little extra) to ensure the motor is bolted flat to
the mounting plate.

>
> What is the purpose of round raised portion !
> To me it would be better if front was flat ?
> I expect there is a good reason for this strange arrangement....

May be to make more work for machine shops !

>
> Thanks for any help...
> Hans W