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elcome to the
first issue of National eNews, a quarterly email
communication to our customers.
National eNews was created for you
by the many talented individuals at the National Precision
Bearing Group of Mechatronics. |
It
will be our goal to provide you with interesting and relevant
information related to the bearing industry, particular
products and National
Precision Bearing in general. You will have an
opportunity to review articles on a
number of topics written by our engineers, product
managers and specialists. It
is our hope that you will find the information to be
valuable as well as informative.
Most topics will focus on bearing and bearing related
products offered by
National Precision Bearing, while others identify current
industry trends and
developments. Please take a few minutes to review the
short list of topics available this quarter.
We
are certain you will find them interesting. Please
contact me directly if there are subjects you would like
to see covered in future issues. >>Email
Editor |
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NPB Self-Lubricating
Spherical Plain Bearings
In addition to our standard line of metal to metal
spherical plain bearings (requiring maintenance), NPB
also offers a full range of maintenance free sizes.
NPB self-lubricating spherical plain
bearings are designed for applications that require extended life
without maintenance, or where operating conditions
are such that the use of the standard steel on
steel bearing is inadvisable. They are particularly
well suited when the loading is in one direction, as
single directional loading prevents grease or oil from
flowing into the load zone. |
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Instead,
self-lubricating
bearings utilize a liner system that is bonded to the
inside diameter
of the outer ring. The chrome plated inner ring, or ball,
provides a
smooth, hard surface to run against this liner system.
Part number and dimensional information can be found on our
website at:
Inch Series - www.nationalprecision.com/spherical-plain-bearings/inch/
Metric Series - www.nationalprecision.com/spherical-plain-bearings/metric/
Contact your Technical Sales Specialist for more details:
www.nationalprecision.com/sales/
Ron Gopal, National Accounts Manager |
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To get the answer
to this question it may better to start with a
different question. So let’s try this one – What does an
Angular
Contact Bearing offer a designer that a Radial Ball
Bearing
doesn’t?
The easy answer to that question is additional
thrust load
capacity. So let’s take a look at how a thrust load
affects a ball
bearing. Here are images of a standard bearing (left
image)
and an angular contact bearing (right image).
The amount of thrust load a bearing can carry is
directly
related to the contact angle, shown in the drawing.
Standard
miniature bearings, for example, generally have contact
angles
of 9-25 degrees, depending on the radial play.
Angular contact bearings are available with contact
angles from 15 to 40 degrees.This allows them
to carry a much higher thrust load. |
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A radial ball
bearing is designed to have the load primarily in a direction
perpendicular to the axis
of the bearing, that is, directly toward the center of
the bearing. Depending on the radial play of the
bearing, some thrust loading is possible.
Angular contact ball bearings also have raceways in
the inner and outer rings that are displaced with
respect to each other in the direction of the bearing
axis. This allows them to reduce the compression
loading on the balls while being loaded in the axial
direction as well as in the radial direction.
The important thing to remember in the
design of an application is to take into account the amount of
thrust loading a bearing will be under. In most
cases it will be dealt with by selecting the correct radial
play, but every once in while it will be appropriate
to select an Angular Contact Ball Bearing.
Bill Banning, Miniature & Instrument
Bearings Product Manager |
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National Precision
Bearing has recently improved the structure of our sales teams to
provide you
with a superior sales experience. As you know there are
differences in industry and bearing needs
throughout the US. Aircraft suppliers, robotics,
agricultural customers and medical business vary
in location, as do all other types of commercial and
manufacturing businesses. We analyzed the
strengths of our Sales and Sales support staff so we could
create teams to better serve each region of
the country.
Your sales team includes the Field Salesperson,
Technical Sales Specialist and Sales Assistant. The
Field Salesperson can be onsite on short notice to meet
your bearing and bearing application needs.
Meanwhile, you have instant access to your Technical
Salesperson in Preston to give you price and
delivery, as well as arrange blanket orders or source
future stock needs. When you need to check
status of an order or get a tracking number your Sales
Support person will make that their priority.
Each member is familiar with your account and any
arrangement needed for the smooth running of
your business. The Regional Team insures that at all
times you have continuity of service and can get
your questions answered.
Click here to see your Field Salesperson www.nationalprecision.com/sales/
Please consider the following special services and
explore with your sales team any that will make
your job easier or be more cost-effective for your
organization:
| • Special
packaging requirements |
• Relubrication of your bearing
inventory |
| • Lubes for
special applications |
• Assemblies of bearings with
their housings |
| • Consignment of
inventory |
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For more information: www.nationalprecision.com/company/
Louie Seaman, Sales Manager |
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NATIONAL PRECISION BEARING GROUP of Mechatronics, Inc.
Phone: 800-426-8038 • 425-222-5900 • Fax: 888-448-1153 •
425-222-5950
E-mail: sales@nationalprecision.com
Copyright © 2008, National Precision Bearing, Inc.
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