Motor alinement

[Ivan49]

I am putting a hyd pump on a motor and was wondering if someone has a good way to aline it. I put the pump on the motor with a coupling and I was going to use a hose clamp to aline the 2 together or is there a better way. Thanks Ivan

 

[franklin2]

We used small dial indicators mounted to one side of the coupler or one of the shafts to zero it in. This will get it dead on this way. Here's a picture of one but it's a little hard to see.

 

[Rustyiron]

Most coupler's that I have seen are "flexible" or allow for some slight mis-alignment, (like a typical "spider" type coupler found on most hyd. log splitters) with the actual coupling occurring with the rubber so called "spider" making perfect alignment unnecessary.

 

[Ultara]

A lot depends on the speed of the motor (1800/3600) The higher the speed the more critical the alignment. That being said, you can do the alignment with a straight edge and feeler gauges, if you don't have access to a idle indicator. You need to remember, you are trying to align 4 planes. Horizontal (angular & parallel) and vertical (angular & parallel) alignment specs for a motor/pump coupling @ 1800 rpm would be .002" in all planes.

 

[crazyal]

Have you looked into pre-made mounting bracket for the motor and pump? Usually they aren't expensive.

 

[Oliver1655]

A "Love Joy" connector is a common "spider" connector. They are commonly available to fit different sized shafts & have different sizes to accommodate different horse power ranges. There is a neoprene like material used as a cushion between the 2 halves & you leave a slight gap when mounting to decrease wear & prevent them from hitting together due to vibration movements of the motor & pump, (end play in the shafts). The 3 pieces you will need will cost around $25-30.



The pre-made pump mounts are around $80 & $30.



For my log splitter, I fabricated mine out of angle iron & flat bar stock. I several hundred hours on it without any problems.

 

[Ivan49]

Thanks for the help. It is up and running. Iknew there were pump spacers and I used a love joy coupling with a home made pu spacer. It is nice to have a milling machine. I use to aline them on die cast machines but did not know if the smaller ones were different or not. Again thanks