Re: Tapered Roller / Angular Contact Bearings(what is dn)

Jan wrote:

>Don't keep us ALL guessing! What are "DN's"???

Jan,

I was going to guess Dynamic Newtons. But I thought I'd ck the net:

From:

http://www.lerc.nasa.gov/WWW/RT1995/5000/5230k.htm

"They could also increase the DN (diameter of the bearing times rpm)
limit on engine speed"

And from:

http://www.techno-isel.com/Tic/H830/HTML/H830P022.htm

"A useful guide for ball bearing selection is to consider the DN
value (speed value) of the bearing. The DN value is the product of
the bore size (mm) and the shaft speed (rpm)."

So now we know.

Ballendo


http://www.techno-isel.com/Tic/H830/HTML/H830P022.htm