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Is there a good source for setups on cylindrical grinders? Specifically, the centerline of the wheel should be how far off the centerline of the roll vertically? Thanks ahead of time.

Yes we are certain of the 60Hz. Vibration was monitored beginning with the application of power up to full speed. The 60Hz vibration began at application of power and diminished in amplitude once the rotor began to roll, about .3 - .4 seconds after application of power. I've read somewhere...

Sorry I have been gone so long. Some clarifications> Yes it is 60Hz. This is observable on most large motors, however on this motor the vibration is especially severe. The condition is observable even on a hot start when there should be some residual oil film. I would assume that if a...

We have a 800HP ac induction motor with sleeve bearings that is experiencing a loud "groan" at initial start. The motor has an across the line starter, with no soft start capabilities. The frequency of the groan is 60Hz (line freq)and lasts until the rotor begins to roll. The motor has been...

Thanks for the quick reply. -The oil ring appears stable, non forced system. -The oil sample results have not come back yet, but I don't anticipate problems as the motor is freshly rebuilt and new oil installed. -There are vibration issues with the motor. The vendors own data shows multiple...

I have a large horizontally mounted ac induction motor with journal bearings, mechanically oiled with oil rings. The free end or opposite drive end bearing is experiencing oil foaming. I am looking for possible causes and ramifications of this conditions. Any help appreciated.

I'm mostly interested in grinding wheel applications in a production environment where some on-line type of monitoring is needed to alert operators to difficulties. Has anyone seen such a thing that actually works?

What technologies are currently being used to monitor for and control chatter in grinding applications?

As a field spook who has to diagnose ill behaving gear sets, I would say your first mistake is having an even tooth count on both pinion and gear. Cuts way down on the gear life and makes for a noisy set. Add a tooth to the gear and see if things don't quiet down some.

You might look at: http://www.imi-sensors.com/series.asp?series=607A61 it is made for this purpose. You might also look at: www.processvibration.com there is a spindle monitoring setup available there.

Where would I find the standard for ground vibration caused by an industrial activity, specifically a stamping plant. The concern is vibration in homes surrounding the plant.

take a look here, there are some very cost effective automated solutions available http://www.processvibration.com/