bearings types
bearings types
Author :Admin | Publish Date:2013-05-15 10:35:51
A comprehensive overview of the standard bearings types, their design
characteristics and their suitability for the demands placed on a given
application can be found in the matrix.Detailed information on the individual
bearings types, including their characteristics and the available designs, can
be found in the sections dealing with individual bearing types. Bearing types that are not included in the matrix are
generally only used for a few well-defined applications.
The matrix permits only a relatively superficial classification of bearings
types. The limited number of symbols does not allow an exact differentiation and
some properties do not depend solely on bearing design. For example, the
stiffness of an arrangement incorporating angular contact ball bearings or
tapered roller bearings also depends on the applied preload and the operating
speed which is influenced by the precision of the bearing and its associated
components as well as by the cage design. In spite of its limitations, the
matrix should enable an appropriate choice of fag
bearing type to be made. It should also be considered that the total cost of
a bearing arrangement and inventory considerations could also influence the
final choice.
Other important criteria to be observed when designing a bearing
arrangement including load carrying capacity and life, friction, permissible
speeds, bearing internal clearance or preload, lubrication and sealing are dealt
with in depth in separate sections of this catalogue.The single row radial deep
groove ball bearing is NMB's most widely produced ball bearing. In addition to
open radial ball bearings, NMB also offers bearings with shields or seals.
Shielded or sealed bearings provide a protective boundary from excess grease and
other efficiency-compromising substances. Snap ring and flange type bearings
provide improved housing fits. NMB also makes available, ultra thin type radial
ball bearings.
With ball bearings you also have different types of ball bearings. You'll
notice here, this koyo 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 [bearings types] . 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.
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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