YES!
Angular contact bearing is a common name for a bearing that can handle
thrust and radial loads. The races for angular contact ball bearings
are tilted 25 to 45 degrees depending on the desired radial vs thrust
load capacities.
They are prolifically used in machine tool spindles where both radial
and thrust loads are inflicted on a cutting tool or lathe spindle. In a
milling machine ABEC 7 super precision radial ball bearings are common.
A matched pair set (of not Chinese) bearings for a Bridgeport runs about
$500. Usually they are setup in matched pairs (id/od concentricity in
micro-inches) back to back so thrust loads in both directions along the
axis are resisted. Tool grinders might use several pairs in tandem for
super low runout.
Angled roller bearings are another approach as in your car wheel bearings.
Oversized ball bearings such as in pillow block assemblies can work as a
combo thrust/radial bearing on a tower top plate. Some are angular
contact but not the usual case. They work because a plain "deep groove
ball bearing" can handle about 15% of its radial static load rating as a
thrust load. So a 2" id deep groove medium size ball bearing with a
5,000# static radial load rating is good for 750# of thrust.
What is important for any metal on metal bearing is to keep the water
out and to use a grease made for static loading. When the grease film
breaks down from a static load, fretting corrosion eats up the balls and
race. Keeping water out is hard and the appropriate greases are
expensive and need periodic replenishment. Another life extending action
is to periodically rotate any metal on metal bearing enough to cause the
balls to rotate more than 360 deg, to replenish the oil film between the
ball and race. Leaving a rotator sitting for weeks at one setting
invites degradation of the balls and races, "thrust" bearing and rotator
bearings.
Polymer bearings are much better choices at the zilch rpm speeds of
rotators and usual tower to mast tolerances. Especially when I look at
what is commonly sold as a tower "thrust bearing". Been there, done
that, never again.
Grant KZ1W
On 11/1/2015 8:39 AM, Wilson wrote:
Can we get this terminology right?
Thrust bearings take AXIAL loads off members, like the prop shaft on a ship.
They don’t take lateral loads as a main function.
Yes, there are some ball and roller bearings with tilted races that can take
some lateral load.
I don’t know if they have a special name?
https://en.wikipedia.org/wiki/Thrust_bearing
Even your auto’s crankshaft has a thrust bearing!
WL
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