Flowserve Bearing Gard User Manual
TM
Bearing Gard
Installation, Operation
and Maintenance Instructions
Oil outlet
Section 3 - Preparations for Installation
3.1 Remove the oil seal from the housing.
3.2 Inspect for and remove sharp edges from the
housing bore, keyways, and shaft steps where
Bearing Gard O-rings must pass.
3.3 Thoroughly clean both the shaft and housing bore.
3.4 Ensure Bearing Gard shaft O-ring position is
located on an area of the shaft free from scratches,
nicks, or dings.
3.5 Shaft and housing surface nish must be
0.8 micrometer (32
3.6 Concentricity of the housing bore to the shaft must
to be maintained within 0.127 mm (0.005 inch) TIR.
min) or better.
Contaminant
outlet
Section 1 - Description of Use
The Bearing Gard is a permanent, non-wearing bearing
protection device used to replace lip seals and simple
labyrinth seals in bearing housings for pumps, motors,
gearboxes and other pieces of rotating equipment. It's
main purpose is to retain lubrication in the bearing
housing and prevent the ingress of contamination as this
can lead to premature failure of the lubrication and
bearings.
Section 2 - Hazzard Summary
To ensure safe and reliable operation of the Bearing
Gard follow all installation, operation, and maintenance
instructions. Failure to comply with these instructions
may result in frictional heating of the Bearing Gard
components and will result in loss in performance.
To find your local Flowserve representative
and find out more about Flowserve Corporation,
visit www.flowserve.com
Top view
Maximum
oil level
Bottom view
Housing
Rotor
Shaft
Stator
Oil outlet
Contaminant outlet
Bearing Gard
cross section.
Features vary
by design.
Section 4 - Installation
4.1 Do not disassemble the Bearing Gard.
It is designed to be installed as a unit.
4.2 Lightly lubricate O-rings, shaft, and housing bore
with the lubricant provided.
4.3 Align the Bearing Gard in housing so drain port
is located on the bottom.
4.4 Use an arbor press to push rotor into cover bore.
Tool should make contact with as much of rotor
surface as possible. Do not hammer or hit the
Bearing Gard.
4.5 Be sure the face is perpendicular to the shaft.
4.6 Once Bearing Gard is in place, remove and plug
the bearing housing vent. The Bearing Gard is
self-venting and will not allow pressure build up in
the housing. Plugging the bearing housing vent will
reduce contamination entry into the housing.
4.7 Rell bearing housing to proper oil level.
4.8 Spin shaft by hand. Listen and feel for any shaft
binding for rubbing. If binding or rubbing occurs,
verify equipment is within tolerances shown in
Operation section of this document.
4.9 Protect Bearing Gard from mechanical impact in
service by location or suitable guarding.
4.10 Properly align rotating equipment.
FIS223eng REV 12/14 Printed in USA
Flowserve Corporation has established industry leadership in the design and manufacture of its products.
When properly selected, this Flowserve product is designed to perform its intended function safely during its
useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products
might be used in numerous applications under a wide variety of industrial service conditions. Although
Flowserve can provide general guidelines, it cannot provide specific data and warnings for all possible
applications. The purchaser/user must therefore assume the ultimate responsibility for the proper sizing and
selection, installation, operation, and maintenance of Flowserve products. The purchaser/user should read
and understand the Installation Instructions included with the product, and train its employees and contractors
in the safe use of Flowserve products in connection with the specific application.
While the information and specifications contained in this literature are believed to be accurate, they are
supplied for informative purposes only and should not be considered certified or as a guarantee of satisfactory
results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express or
implied, regarding any matter with respect to this product. Because Flowserve is continually improving and
upgrading its product design, the specifications, dimensions and information contained herein are subject
to change without notice. Should any question arise concerning these provisions, the purchaser/user should
contact Flowserve Corporation at any one of its worldwide operations or offices.
© 2014 Flowserve Corporation
Section 5 - Operation
5.1 Shaft tolerance ± 0.051 mm (0.002 inch)
5.2 Housing tolerance ± 0.025 mm (0.001 inch)
5.3 Maximum axial movement: 0.63 mm (0.025 inch) TIR
Maximum radial runout: 0.13 mm (0.005 inch) TIR
5.4 Speed: 30 m/s (6000 ft/min) maximum
5.5 Maximum temperature: 190°C (375°F)
5.6 Bearing Gard’s labyrinth is designed to contain oil
and repel water. It is not designed for use in either
horizontal or vertical applications that are ooded
with oil or other liquid.
Section 6 - Maintenance
6.1 Use an arbor press to push the Bearing Gard
from the bore. Do not hammer.
6.2 Contact your Flowserve seal representative
for technical support of the Bearing Gard.
USA and Canada
Kalamazoo, Michigan USA
Telephone: 1 269 381 2650
Telefax: 1 269 382 8726
Europe, Middle East, Africa
Roosendaal, the Netherlands
Telephone: 31 165 581400
Telefax: 31 165 554590
Asia Pacific
Singapore
Telephone: 65 6544 6800
Telefax: 65 6214 0541
Latin America
Mexico City
Telephone: 52 55 5567 7170
Telefax: 52 55 5567 4224
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