Previous in Forum: Random Vibration - Designing an Electrodynamic Shaker   Next in Forum: power generation
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
2 comments
Rate Comments: Nested
Coinneach
Associate
New Zealand - Member - Member Papua New Guinea - Member - Lapun

Join Date: Mar 2007
Location: Kawerau, New Zealand
Posts: 25

FALK 1120H Grid Type Shaft Coupling

10/06/2009 6:58 PM

I need to determine the "gap" between the two shafts when the drive coupling is a FALK 1120H type. The coupling is transmitting a steady load from a gearbox through to a boiler ID fan. I think the gap is somewhere of the order of 3 to 6mm but I cannot find a specific FALK document that states this.

Then I was advised that FALK is now RENOLDS and the closest I can get to a grid type coupling with them is a 1120T - but trying to find out if they are dimensionally identical, and interchangable - is like pulling teet!.

Does somebody have a good handle on "The Gap?

__________________
 from the beautiful central North Island of New Zealand.
Register to Reply
Pathfinder Tags: shaft coupling
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
KGN
Participant

Join Date: Oct 2009
Posts: 3
#1

Re: FALK 1120H Grid Type Shaft Coupling

10/07/2009 6:33 AM

Hi,

The gap for this type is maximum 6mm...minimum can be determined based on the float of the shaft during operation.
Register to Reply
Coinneach
Associate
New Zealand - Member - Member Papua New Guinea - Member - Lapun

Join Date: Mar 2007
Location: Kawerau, New Zealand
Posts: 25
#2
In reply to #1

Re: FALK 1120H Grid Type Shaft Coupling

10/07/2009 7:10 PM

Many thanks for that. I managed to persevere late last night and finally got a Rexnord document sent to me, that gives 6mm for the coupling size/type we have. You were spot on!

The mechanics did not correctly install the locating bearing on the fan shaft, and so the shaft drifted about 2mm until it touched the gearbox outlet shaft. Then the gearbox outlet shaft bearings failed and we had a giant mess to fix up.

Then we found that the gearbox (which was made in India!) has counterfeit SKF bearings. And that the gearbox upper and lower casings did not have dowels to ensure the fir was exactly the same each time, and that the passages for the bearings were on a taper. Happy days.

kind regards.

__________________
 from the beautiful central North Island of New Zealand.
Register to Reply
Register to Reply
Have a Different Question?
2 comments

Previous in Forum: Random Vibration - Designing an Electrodynamic Shaker   Next in Forum: power generation

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Mechanical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (62 right now)
Show Members
Advertisement