Motor mounting bracket

1. A mounting bracket for an electrical motor, the mounting bracket comprising:

a bottom surface configured to be mounted to a support structure, and

a first mounting interface configured to support a stator frame of a first size, said first mounting interface having a first distance from the bottom surface, and

a second mounting interface configured to support a stator frame of a second size, said second mounting interface having a second distance from the bottom surface, the second distance being different from the first distance,

said bracket being adapted to provide concurrently said first mounting interface and said second mounting interface.

2. The mounting bracket of claim 1 , wherein the bottom surface comprises a substantially planar section, and the first and second mounting interfaces comprise substantially planar sections which are substantially parallel with the substantially planar section of the bottom surface.

3. The mounting bracket of claim 1 , wherein the mounting bracket comprises at least three mounting interfaces at different distances from the bottom surface, each mounting interface being configured to support a stator frame.

4. The mounting bracket of claim 1 , wherein the mounting bracket comprises a bottom hole through the bottom surface.

5. The mounting bracket of claim 4 , wherein the mounting bracket comprises a plurality of bottom holes, and

wherein the positions of the bottom holes correspond to a hole pattern according to an industrial standard.

6. The mounting bracket of claim 1 , wherein all of the mounting interfaces are divided in at least two portions.

7. The mounting bracket of claim 1 , wherein the mounting bracket comprises an interface hole through each interface.

8. A motor assembly comprising:

a stator frame having either a first size or a second size, and

a mounting bracket, the mounting bracket including

a bottom surface configured to be mounted to a support structure,

a first mounting interface configured to support the stator frame of the first size, said first mounting interface having a first distance from the bottom surface, and

a second mounting interface configured to support the stator frame of the second size, said second mounting interface having a second distance from the bottom surface, the second distance being different from the first distance,

said bracket being adapted to provide concurrently said first mounting interface and said second mounting interface,

wherein the stator frame is supported on one of the mounting interfaces of the mounting bracket.

9. The motor assembly of claim 8 , wherein the motor assembly comprises a plurality of identical mounting brackets, and wherein the stator frame is being supported on one of the mounting interfaces of each mounting bracket.

10. The motor assembly of claim 9 , further comprising a motor shaft having a shoulder.

11. The motor assembly of claim 9 , wherein the mounting brackets comprise a plurality of bottom holes and wherein the positions of the bottom holes in relation to the axis of the motor shaft and the position of the shoulder correspond to an industrial standard.

12. The motor assembly of claim 11 , wherein the industrial standard is an IEC standard or an NEMA standard.

13. A combination of a first motor assembly and second motor assembly, the combination comprising:

the first motor assembly having a first stator frame of a first size, and

the second motor assembly having a second stator frame of a second size, the first size being different from the second size,

the first and the second stator frames being supported on different mounting interfaces of mounting brackets, said mounting brackets each being adapted to provide concurrently said mounting interfaces, said mounting interfaces each having different distances from corresponding bottom surfaces of said mounting brackets,

the first and the second motor assemblies having a substantially equal shaft height, the shaft height being defined by the distance between an axis of the motor shaft and the bottom surface.

14. A method for obtaining a substantially equal shaft height for a first and second electrical motors having stator frames of different sizes, the method comprising the steps of:

providing a first and second stator frames of different sizes;

providing a first and second mounting brackets, each of the first and second mounting brackets including

a bottom surface configured to be mounted to a support structure, and

a first and second mounting interfaces configured at different distances from the bottom surface, each mounting interface being configured to support a stator frame,

said brackets each being adapted to provide concurrently said first and second mounting interfaces;

supporting the first stator frame on the first mounting interface of the first mounting bracket; and

supporting the second stator frame on the second mounting interface of the second mounting bracket.