bearings types
bearings types
Author :Admin | Publish Date:2013-05-15 10:35:50
With ball bearings you also have different types of ball bearings. You'll
notice here, this bearing is quite small. It's a little bit thinner and on the
axle itself compared to this one, you can see the diameter over itself is pretty
small. So there's different sizes. Sometimes the larger they are, the easier it
is to keep them spinning longer 'cause they make a wider gap, it won't grab the
string quite as fast and you'll really get some good spin time out of it. When
it comes down to it though, small versus large bearing, it doesn't make the hugest difference in the world, I
won't freak out if you have a small bearing yo-yo and I don't think that you
need a large bearing yo-yo for things to work. The next step from a regular
bearing is something called a concave bearing.
And if you zoom-in on this bearing, you can actually see it's got a little
groove in it if you compare it to this one. Because of that little groove, the
string can actually sit right down into that bearing and what that allows you to
do is it allows the string to sit there and it won't get caught by the edge of
the yo-yo quite as well and it also centers it so when you're doing tricks on
the string, the yo-yo moves to one side or the other. It's not going to as
quickly grab the edge of the yo-yo. It's going to be centered there. It allows
you to do tricks at much longer time, allows everything to keep smooth and what
not. So those are your basic types of ina
bearings. You can also get different ABEC ratings, there's ABEC five and
seven just kinda like skateboards. There's even ceramic bearings. Ceramic
bearings spin for an incredibly long time, it's not incredibly needed though. If
you just get your basic ball bearing with your yo-yo, it should be enough and
with a little lube and cleaning which we're going to be talking about in the
next segment, you can make it play as good as it needs to be.
In bearings of this type, the cylindrical rollers are in linear contact
with the raceways. They have a high radial load capacity and are suitable for
high speeds.
There are different types designated as NU, NJ, NUP, N, NF (for single-row
bearings), NNU, and NN (for double-row bearings depending on the design or
absence of side ribs).
The outer and inner rings of all types are separable.
Some cylindrical roller skf bearings have no
ribs on either the inner or outer ring, so the rings can move axially relative
to each other. These can be used as free-end bearings. Cylindrical roller
bearings, in which either the inner or outer rings has two ribs and the other
ring has one, are capable of taking some axial load in one direction Double-row
cylindrical roller bearings have high radial rigidity and are used primarily for
precision machine tools.
Pressed steel or machined brass cages are generally used, but sometimes
molded polyamide cages are also used.Depending on the existence of ribs on their
rings, Cylindrical Roller Bearings are classified into the following types:Types
NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can
sustain limited axial loads in one direction. Types NH and NUP can be used as
fixed-end bearings.
NH-type cylindrical roller bearings consist of the NJ-type cylindrical
roller bearings and HJ-type L-shaped thrust collars.The inner ring loose rib of
an NUP-type cylindrical roller bearing should be mounted so that the marked side
is on the outside.Rolling bearings fall into two main classifications: ball
bearings and roller bearings. Ball bearings are classified according to their
bearing ring configurations: deep groove, angular contact and thrust types.
Roller bearings on the other [bearings types] are classified according to the shapeof the
rollers: cylindrical, needle, taper and spherical.
BRING SKF RLS 24 (3 X 5 3/4 X 1 1/16)
BRING SKF RLS 32 (4 X 7 1/4 X 1 1/4)
BRING SKF RMS 6 (3/4 X 2 X 11/16)
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