Most bearing failures today are caused by
corrosion. KMS Bearings' plastic ball bearings can be utilized
in environments destructive to conventional bearings. They can
operate in hostile environments such as sea water, film processing
solutions and swimming pools. In many cases the medium can be
used as a lubricant.
Special designs are readily and inexpensively
made from plastics. This allows engineers complete freedom to
design the bearing around the device rather than attempting
to design the device around a limited range of standard bearings.
KMS can design a bearing around a stock cage
that is determined by the load, speed and overall size requirement.
We have standard cages to accommodate bearings sizes from as
small as 1/2" O.D. to as large as 5" I.D. If we do
not have a cage for your size requirement we can easily make
a new cage size by either machining or making a new mold tool.
The illustration shows the numerous possibilities that a standard
bearing can be modified to. We can change the bore from a minimum
to a maximum I.D. We can change the bore from a round hole to
a solid to a hex. The outer ring can be modified from a round
to a two-hole flange, or to a sprocket or to a self mounting
fixing clip fastener design. See Special
Bearings for further examples of integrated designs.
Many times a bearing is mounted into another
part, such as a plastic pulley, sprocket, wheel or a mounted
block. Utilizing the design concept of a plastic ball bearing,
KMS Bearings, Inc., can integrate the mating component as the
raceway of the bearing, ie: pulley as the outer ring, or the
shaft as the inner ring. The end result is fewer parts, reduced
assembly time, and overall lower cost.
For an example of actual integrated plastic
race ball bearings click on special bearings and for an animated
graphic of product integrating click on design flexibility.
Plastic ball bearings become completely non
magnetic when fitted with either polymer, glass, or non magnetic
316 stainless balls. They are ideal for use where there can
be no magnetic distortion.
Plastic ball bearings are naturally clean
because they do not corrode or require lubrication. They are
ideal for wash down applications and clean room environments.
Plastics absorb shock loads better than metal
due to their elastic nature. Many conventional radial ball bearings
fail due to brinelling of the raceway, ie: balls denting the
raceway.
There are three reasons steel bearings require
lubrication; to reduce friction, dissipate heat and resist corrosion.
Plastic, by nature, does not corrode. Due to the design of plastic
ball bearings, there is no metal to metal contact, resulting
in less friction; therefore dissipating heat becomes less critical.
Plastic ball bearings run freer and naturally
have low inertia due to the low coefficient of friction between
plastic and stainless. Two other factors contributing to low
inertia are the ability to run without grease and being lighter
in weight.