Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Centrifugal compressor hold down bolt design

Status
Not open for further replies.
dmertz

dmertz

Mechanical
Joined
Jul 14, 2008
Messages
18
Location
US
What is the best method for mounting centrifugal compressor feet to the baseplate supports?

1. Bolt threaded directly into threaded hole on the baseplate.
2. Through bolt with nut and washer on the bottom.

The compressors I have seen use the bolt threaded directly into the baseplate. However, I would think that using a through bolt would give better flexibility during alignment and would be easier from a manufacturing perspective. API 617 doesn't seem to specifically exclude either method.

I can't think of any particular load issue as I have seen through bolts being used on generator mounts which have much higher load requirements.
 
Sort by date Sort by votes
A threaded stud through the base plate with spherical washers is what I've generally seen.
 
Upvote 0 Downvote
Is there any validity in the assumption that having a tapped hole with more thread engagement is a better fastener than a through hole with a bolt and a single nut of thread engagement?
 
Upvote 0 Downvote
Tapped and threaded hole is subject to mechanical work hardening, heating/cooling loosening, vibratory disengagement, entry of water and corrosion, dissimilar metallic contact corrosion, all more easily handled by a bolt chair, insulation and backing washers, nuts and a cotter pin.

Independent events are seldomly independent.
 
Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

Awais. Bh
  • Locked
  • Question Question
Balancing Line in Centrifugal Compressor
Replies
3
Views
2K
JJPellin
JJPellin
edm123
  • Locked
  • Question Question
Centrifugal Compressor Nozzle Orientation
Replies
2
Views
834
edm123
edm123
A
  • Question Question
Compressor performance curve
Replies
0
Views
8K
AhmadAPC
A
J
  • Question Question
NATURAL GAS COMPRESSOR
Replies
10
Views
3K
georgeverghese
georgeverghese
A
  • Question Question
Parallel Compressor Setup With Uneven Capacities
Replies
2
Views
406
LittleInch
LittleInch

Part and Inventory Search

Sponsor

Back
Top