Engineering standards for a motor mounting plate

[JFoletti]

Hi Folks,

I'm struggling to find relevant engineering standards (BSI) for plate thickness for a motor mounting plate. I'm looking to redesign a motor mounting plate for a 22kW motor to go on a granulator machine. the plate is currently 15mm thick, and i want to see if this is possible to reduce down to about 12mm . Does anyone know of a standard for this?

Many thanks,

James.

 

[onatirec]

Maybe there are standards for this, but I'm not familiar with anything.

Seems like the type of application where you need to do some engineering based on material strengths and loads. There's going to be different required thicknesses depending on whether you're making it out of soft aluminum or hardened steel - and maybe vibrations induced in granulating process, etc.

 

[drawoh]

JFoletti,

Would there be engineering standards for something like this?

How do you expect this thing to get overloaded and to fail? Can you look at some existing mounts? If people are doing things a certain way, there usually is a good reason.

--
JHG

 

[Gr8blu]

For most motors, the key feature of a foundation - which includes the mounting plate - is that it is either massive or solid (or both). A massive foundation sees no deflection based on the forces applied (either by seismic activity in the area, or by the transient torques resulting from either the motor or the process. Note that the typical criteria for the motor mount is the ability to hold it in the event of a bolted fault - which may exert as much as 6x rated torque at the motor foot bolt location - and exert it in the direction of rotation (which means upward on one side and downward on the other, relative to the motor shaft).

Converting energy to motion for more than half a century