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encik.oranje
Active Contributor

Join Date: Dec 2011
Posts: 11

Motor DE and NDE Bearings

03/02/2014 3:43 AM

Hi all,

I have a motor operate using journal bearing. during start up, there is jacking pump to create the hydrostatic film. my question,

1. What would be the setting pressure for jacking pump. same or different?

2. If different,

(i) what is the consideration i.e load, bearing type, etc?

(ii) normally, at which side the pressure is higher and why?

Thanks guys for your sharing information.
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lyn
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Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: Motor DE and NDE Bearings

03/02/2014 9:40 AM

Based on the information provided:

1.

2.

What does the operator's manual say?

What does the bearing manufacturer say?
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Codemaster
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Join Date: Jul 2005
Location: Stoke-on-Trent, UK
Posts: 4496
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#2

Re: Motor DE and NDE Bearings

03/02/2014 10:54 AM

Same as or different from what?

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TonyS
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United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
Good Answers: 181
#3

Re: Motor DE and NDE Bearings

03/02/2014 10:41 PM

Jacking pressure? Only the bearing manufacturer can provide that information.
Get the pressure to high shaft seals are going to fail.

I'm not going in to the aftermath of getting it wrong, I had to change a 2500HP motor as a result of a fitter tweeking the pressure setting.

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DavidHeiman
Member

Join Date: Feb 2014
Posts: 9
#4

Re: Motor DE and NDE Bearings

03/03/2014 9:22 AM

1st Ans: For jacking pump setting pressure will be different.

2nd Ans: As consideration load bearing type is generally used in pairs to handle the induced load resulting from the internal axial.

And left side always has more pressure than right.
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JohnDG
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Location: Reading, Berkshire, UK. Going under cover.
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#5
In reply to #4

Re: Motor DE and NDE Bearings

03/03/2014 11:12 AM

Is that looking from above?

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dj95401
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United States - Member - Hobbies - Fishing - New Member Hobbies - Target Shooting - New Member Hobbies - RC Aircraft - New Member Engineering Fields - Aerospace Engineering - New Member

Join Date: May 2009
Location: Saint Helens, Oregon
Posts: 2216
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#6

Re: Motor DE and NDE Bearings

03/03/2014 2:31 PM

What do they recommend on "U-tube"?

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Previous in Forum: Nonmandatory Appendix A-451 Missing!   Next in Forum: Chemical Cleaning of Once Thru Units

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