Warner Electric SF-PB 400 User Manual

SF/PB 400 Armature Release Spring

P-1368
819-0030

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In the normal installation of a size 400 clutch or brake,
no provision is made to provide a positive clearance
between friction surfaces. Installation of the release
springs, as described below, will maintain a clearance
between the armature and rotor or replaceable face
when the unit is de-energized. This feature will eliminate
the noise or drag often developed in units without the
release springs.

The Spirolox ring, inserted behind the snap ring
furnished with the hub will act as a spacer and will
assure proper release spring operation.

Accessory No. 5104-101-003-contains 2 release
springs, No. 808-0079, for size 400.

Installation:

Installation Instructions

Figure 2

Assemble the snap ring into the groove in the hub,
clamping the release spring against the end of the
spline. (See Figure 3)

Insert the release springs into the backing plate holes of
the armature as shown in figure 1. Bow the springs as
necessary to insert in the armature. The springs are
curved in the free state. The curve at the center of the
spring should bear against the armature when in place.

Figure 1

Remove the snap ring from the hub. Insert the hub into
the armature from the segment side. Slide the hub into
the armature until the release springs engage the snap
ring groove. (See Figure 2)

Figure 3

Slide armature and hub assembly on shaft to where the
armature is in contact with the mating rotor or magnet
face. Slide armature hub back approximately 1/32" for
free running clearance. (See Figure 4)

Figure 4

With the armature hub secured to the shaft and the coil
de-energized, the springs will return the armature axially
on the spline until it makes contact with the snap ring.

Warner Electric • 800-825-9050 P-1368 • 819-0030

Warranty

Warner Electric LLC warrants that it will repair or replace (whichever it deems advisable) any
product manufactured and sold by it which proves to be defective in material or workmanship within a
period of one (1) year from the date of original purchase for consumer, commercial or industrial use.

This warranty extends only to the original purchaser and is not transferable or assignable without Warner
Electric LLC’s prior consent.

Warranty service can be obtained in the U.S.A. by returning any defective product, transportation
charges prepaid, to the appropriate Warner Electric LLC factory. Additional warranty information may be
obtained by writing the Customer Satisfaction Department, Warner Electric LLC, 449 Gardner Street,
South Beloit, Illinois 61080, or by calling 815-389-3771.

A purchase receipt or other proof of original purchase will be required before warranty service is
rendered. If found defective under the terms of this warranty, repair or replacement will be made, without
charge, together with a refund for transportation costs. If found not to be defective, you will be notified
and, with your consent, the item will be repaired or replaced and returned to you at your expense.

This warranty covers normal use and does not cover damage or defect which results from
alteration, accident, neglect, or improper installation, operation, or maintenance.

Some states do not allow limitation on how long an implied warranty lasts, so the above limitation may
not apply to you.

Warner Electric LLC’s obligation under this warranty is limited to the repair or replacement of the
defective product and in no event shall Warner Electric LLC be liable for consequential, indirect,
or incidental damages of any kind incurred by reason of the manufacture, sale or use of any defective
product. Warner Electric LLC neither assumes nor authorizes any other person to give any other
warranty or to assume any other obligation or liability on its behalf.

WITH RESPECT TO CONSUMER USE OF THE PRODUCT, ANY IMPLIED WARRANTIES WHICH THE
CONSUMER MAY HAVE ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL
CONSUMER PURCHASE. WITH RESPECT TO COMMERCIAL AND INDUSTRIAL USES OF THE
PRODUCT, THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES,
WHETHER EXPRESSED OR IMPLIED BY OPERATION OF LAW OR OTHERWISE, INCLUDING, BUT
NOT LIMITED TO, ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS.

Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation or exclusion may not apply to you. This warranty gives you specific legal rights and you
may also have other rights which vary from state to state.

Changes in Dimensions and Specifications

All dimensions and specifications shown in Warner Electric catalogs are subject to change without no­tice. Weights do not include weight of boxing for shipment. Certified prints will be furnished without
charge on request to Warner Electric.

Warner Electric LLC

31 Industrial Park Road • New Hartford, CT 06057
815-389-3771 • Fax: [phone]
www.warnerelectric.com

An Altra Industrial Motion Company

P-1368 819-0030 8/11 Printed in USA