Bearing (roller) experts, need help!
Thread Starter
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Bearing (roller) experts, need help!
I'm looking at a thrust roller bearing here that is:
*2.75" in diameter ID
*3.625" OD
*.125" thick
And has a Dynamic Load rating of 10,700 lbf.
What is "lbf"? lb-ft? That can't be it...doesn't make any sense.
I'm looking at another thrust roller bearing that is:
*40mm ID
*60mmOD
*3mm thick
And has a Dynamic load rating of "31,4 kN"
What does that mean?? Is that 31.4 Kilonewtons? If so, that is a 3,202,000lb force. That can't be right.
Anyone know about these ratings and what they really mean?
*2.75" in diameter ID
*3.625" OD
*.125" thick
And has a Dynamic Load rating of 10,700 lbf.
What is "lbf"? lb-ft? That can't be it...doesn't make any sense.
I'm looking at another thrust roller bearing that is:
*40mm ID
*60mmOD
*3mm thick
And has a Dynamic load rating of "31,4 kN"
What does that mean?? Is that 31.4 Kilonewtons? If so, that is a 3,202,000lb force. That can't be right.
Anyone know about these ratings and what they really mean?
Le Mans Master
Joined: Oct 2007
Posts: 9,729
Likes: 3,517
From: Akron Ohio
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I'm looking at a thrust roller bearing here that is:
*2.75" in diameter ID
*3.625" OD
*.125" thick
And has a Dynamic Load rating of 10,700 lbf.
What is "lbf"? lb-ft? That can't be it...doesn't make any sense.
I'm looking at another thrust roller bearing that is:
*40mm ID
*60mmOD
*3mm thick
And has a Dynamic load rating of "31,4 kN"
What does that mean?? Is that 31.4 Kilonewtons? If so, that is a 3,202,000lb force. That can't be right.
Anyone know about these ratings and what they really mean?
*2.75" in diameter ID
*3.625" OD
*.125" thick
And has a Dynamic Load rating of 10,700 lbf.
What is "lbf"? lb-ft? That can't be it...doesn't make any sense.
I'm looking at another thrust roller bearing that is:
*40mm ID
*60mmOD
*3mm thick
And has a Dynamic load rating of "31,4 kN"
What does that mean?? Is that 31.4 Kilonewtons? If so, that is a 3,202,000lb force. That can't be right.
Anyone know about these ratings and what they really mean?
Sometimes commas are used as decimals in that system. I have no idea why.
Racer
Joined: Jul 2010
Posts: 261
Likes: 0
From: Spokane WA
I'm looking at a thrust roller bearing here that is:
*2.75" in diameter ID
*3.625" OD
*.125" thick
And has a Dynamic Load rating of 10,700 lbf.
What is "lbf"? lb-ft? That can't be it...doesn't make any sense.
I'm looking at another thrust roller bearing that is:
*40mm ID
*60mmOD
*3mm thick
And has a Dynamic load rating of "31,4 kN"
What does that mean?? Is that 31.4 Kilonewtons? If so, that is a 3,202,000lb force. That can't be right.
Anyone know about these ratings and what they really mean?
*2.75" in diameter ID
*3.625" OD
*.125" thick
And has a Dynamic Load rating of 10,700 lbf.
What is "lbf"? lb-ft? That can't be it...doesn't make any sense.
I'm looking at another thrust roller bearing that is:
*40mm ID
*60mmOD
*3mm thick
And has a Dynamic load rating of "31,4 kN"
What does that mean?? Is that 31.4 Kilonewtons? If so, that is a 3,202,000lb force. That can't be right.
Anyone know about these ratings and what they really mean?
You must be new to this stuff
Thread Starter
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
I am. That is why I am asking for help. Can you offer any actual help? The "smiley faces" aren't really helpful. is 10,700 lb unreasonable? According to Kubs, the one bearing is rated over 7,000 lbs...
This is excellent info. I wondered about the comma. I don't know why they do that either. Thank you for the info. Both those bearings should work for my application then. Thank you! 
Thread Starter
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
I'm intending to use it on the clutch system of a car. I estimate that it could have to deal with a force of up to 600 lbs, and a max of 2000 RPM. The force would only be incured while the clutch pedal is depressed, and the RPM could/would be any time the engine is running.
What does "10 700 lbf" mean in lay-terms, the load in pounds that the bearing can manage?
What does "10 700 lbf" mean in lay-terms, the load in pounds that the bearing can manage?
Last edited by Tom400CFI; Mar 25, 2011 at 11:16 AM.
Safety Car
Joined: Sep 2001
Posts: 4,165
Likes: 555
From: Glenbeulah Wi
I'm intending to use it on the clutch system of a car. I estimate that it could have to deal with a force of up to 600 lbs, and a max of 2000 RPM. The force would only be incured while the clutch pedal is depressed, and the RPM could/would be any time the engine is running.
What does "10 700 lbf" mean in lay-terms, the load in pounds that the bearing can manage?
What does "10 700 lbf" mean in lay-terms, the load in pounds that the bearing can manage?
Last edited by bjankuski; Mar 25, 2011 at 11:58 AM.
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Thread Starter
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Well that certainly seem logical. Thanks again, for the reply. I don't know what the "bearing king's" deal was when I said that in the first place. Thanks again, bjankuski.
Racer
Joined: Jul 2010
Posts: 261
Likes: 0
From: Spokane WA
Drifting
Joined: Mar 2009
Posts: 1,253
Likes: 4
From: East Wenatchee (2hours from n e where) WA
1 lbf is 1 pound of force. about 4.45n. used to quantify load. thrust against a bearing.
I am sure nobody was intending to be rude or disrespectful. It is difficult to convey and interpret attitude on a bulletin board.
I am sure nobody was intending to be rude or disrespectful. It is difficult to convey and interpret attitude on a bulletin board.
