Shop Floor Talk  

Go Back   Shop Floor Talk > Welding and Metalworking Forums > Mechanical & Electrical

SFT Search:   
Reply
 
Thread Tools Display Modes
  #1  
Old 01-15-2020, 10:34 PM
gimpyrobb's Avatar
gimpyrobb gimpyrobb is offline
Elite Member
 
Join Date: Jul 2012
Location: Cincy Oh
Posts: 1,900
Default Ancient Ingersoll Rand 7t compressor

I don't know why I brought it home, guess cause a buddy has a compressor hes outgrown. It a 30t series and with a 7hp motor it should be rated around 25cfm. This sucker was made in the 50s so I'll probably have to hydro test the tank. The motor was 3phase so I'll probably swap it out. Finally the compressor has a "loose spot" best I can describe it while rotating the flywheel. Should be interesting to see what it is when I look inside.
Attached Thumbnails
Click image for larger version

Name:	20200114_155408.jpg
Views:	132
Size:	206.8 KB
ID:	153981  
Reply With Quote
  #2  
Old 01-16-2020, 10:17 AM
toprecycler's Avatar
toprecycler toprecycler is offline
Administrator
 
Join Date: Jan 2009
Location: Petoskey, Michigan
Posts: 4,529
Default

Should be a compressor that will last you a lifetime!


Sent from my iPhone using ShopFloorTalk
__________________
Brian

You don't know what you don't know.

"It's what you learn after you know it all that counts." John Wooden
Reply With Quote
  #3  
Old 01-16-2020, 10:56 AM
Ironman's Avatar
Ironman Ironman is offline
Iron Modification Investigator
 
Join Date: Feb 2008
Location: Warburg, Alberta, Canada
Posts: 14,467
Default

I have one like that, sitting around for stock. Mine is 3 cylinder.
The specs are:
Ingersol Rand 30T
Ser # 111622
25-30 hp
85 cfm at 1030 rpm
90 cfm at 1200 rpm
__________________
Gerry
You got freedom of speech, if you don't say too much.
Aaron Neville.

The virtue is always a cover for the sin. That's the key to understanding the modern left. Whatever they're accusing you of doing, they are doing themselves but more enthusiastically. And that's definitely the story of Justin Trudeau. Tucker Carlson
Reply With Quote
  #4  
Old 01-16-2020, 05:20 PM
gimpyrobb's Avatar
gimpyrobb gimpyrobb is offline
Elite Member
 
Join Date: Jul 2012
Location: Cincy Oh
Posts: 1,900
Default

Yeah, there is quite a few models in the 30t series. They started the 30t group back in 1929 and they haven't changed much over the years. Really happy to have it. I'll try to get good pics as I go through it as the 7t models aren't as plentiful as some other models.
Reply With Quote
  #5  
Old 01-16-2020, 07:39 PM
alchemist's Avatar
alchemist alchemist is offline
Elite Member
 
Join Date: Jul 2009
Location: New Orleans
Posts: 1,439
Default

I've got one made in 1929 and I still use it as my main compressor. The unloader was destroyed and one of the rods were bent when I got it. I just use an un-loader on the pressure switch and straightened the rod on the press.
Reply With Quote
  #6  
Old 01-16-2020, 08:23 PM
digr's Avatar
digr digr is offline
The Real Deal
 
Join Date: Apr 2005
Location: Duluth MN
Posts: 8,391
Default

Quote:
Originally Posted by alchemist View Post
I've got one made in 1929 and I still use it as my main compressor. The unloader was destroyed and one of the rods were bent when I got it. I just use an un-loader on the pressure switch and straightened the rod on the press.
LOL good job!!!!
__________________
Drawing by Smartdraw
Reply With Quote
  #7  
Old 02-11-2020, 03:00 PM
gimpyrobb's Avatar
gimpyrobb gimpyrobb is offline
Elite Member
 
Join Date: Jul 2012
Location: Cincy Oh
Posts: 1,900
Default

Took mine apart today to see whats going on. Man has this thing been neglected! Lots of sludge to clean out and it fought me every step of the way. One of the things I love about this old stuff is its made to be quality, not how cheap can we make it and it last for a couple years. So far, it seems the only thing it needs is bearings for the crank to the housing. The rod bearings look great. I'll post some pics up in a bit, the cell phone is charging right now.
Reply With Quote
  #8  
Old 02-11-2020, 05:48 PM
gimpyrobb's Avatar
gimpyrobb gimpyrobb is offline
Elite Member
 
Join Date: Jul 2012
Location: Cincy Oh
Posts: 1,900
Default

Some pics. The crank had NO interest in coming out of the housing. After trying pullers and impact hammers I found a bearing press cup for dual axles that was the same size as the bearing and whailed on it with a 5lb sledge. It finally let go and I took the crank over to the 20 ton hydraulic press to get the bearings off.
Attached Thumbnails
Click image for larger version

Name:	20200211_140339.jpg
Views:	68
Size:	216.2 KB
ID:	154761   Click image for larger version

Name:	20200211_165603.jpg
Views:	65
Size:	213.0 KB
ID:	154762  
Reply With Quote
  #9  
Old 02-11-2020, 05:54 PM
gimpyrobb's Avatar
gimpyrobb gimpyrobb is offline
Elite Member
 
Join Date: Jul 2012
Location: Cincy Oh
Posts: 1,900
Default

As you can see, the bearings are kinda crusty. Its amazing how hefty all the parts are. I took the cyl heads off with the pistons and connecting rods still in them. It was all I could do to move the large one from the driveway into the garage. The flywheel weighs a ton on its own and the intercooler is no joke either!
Reply With Quote
  #10  
Old 02-12-2020, 09:33 PM
gimpyrobb's Avatar
gimpyrobb gimpyrobb is offline
Elite Member
 
Join Date: Jul 2012
Location: Cincy Oh
Posts: 1,900
Default

Cleaned up the bearings, wow the larger of the two is kinda spendy!
Attached Thumbnails
Click image for larger version

Name:	20200212_195602.jpg
Views:	36
Size:	201.0 KB
ID:	154785   Click image for larger version

Name:	20200212_195730.jpg
Views:	36
Size:	198.8 KB
ID:	154786  
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Web Search:

All times are GMT -5. The time now is 03:33 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.