Backstop Installation — Size 4608/M46008
Introduction
The following instructions apply to INSTALLATION ONLY of an
external backstop (Model B1F, Size 20) in a horizontal drive,
Size 4608 double reduction drive. This backstop is sold only as
an accessory for new or existing Falk drives. Do not use for any
other application without written approval from The Falk
Corporation.
The backstop is designed to operate during overrunning within
a speed range of 400 to 1800 rpm and for creep drives
between 100 and 400 rpm no more than one hour per month.
For continuous speeds less than 400 rpm or greater than 1800
rpm, refer application to Falk. The backstop can operate
successfully on slope mounted applications up to a maximum
shaft axis tilt of
æ
6° from horizontal; refer to Falk for other
mountings.
CAUTION:
To prevent damage to backstops due to
incorrect motor shaft rotation at start up, couplings are NOT
assembled when drives are furnished with backstops.
After completing the electrical connection, check motor and
drive shaft rotations. Then complete alignment and assembly of
coupling.
WARNING:
DO NOT use Falk pawl type backstops in
tandem. Refer to Falk all applications involving the need for
two or more backstops in one system.
DO NOT use backstops for systems that are designed for the
handling of people such as elevators, man lifts, ski tows and
ski lifts.
DO NOT use the backstop as a substitute for a brake.
The backstop and normal associated equipment (shaft, pulleys,
etc.) involve moving parts, therefore consult local, state, OSHA
and ANSI safety codes for proper guarding of rotating
members and possible pinch points.
If Backstop slippage occurs, DO NOT operate. Install a new
backstop before resuming operation.
Installation
1. Lock out power source and remove external load from
system.
2. Clean the backstop bore and the shaft on which the
backstop will be mounted. Remove and clean shaft key and
set aside.
CAUTION:
Refer to direction of rotation arrow on backstop.
Before installation make certain that the direction of rotation
is correct. Check backstop size on nameplate and make
certain it is correct.
3. Slide backstop onto shaft and torque arm pin. The backstop
must slip onto shaft. DO NOT hammer backstop on shaft.
Allow clearance between backstop anchor lug and torque
arm pin, Figure 6. Allow clearance at torque arm pin for the
extreme float limits of the shaft, Figure 7. Install key after
aligning keyways.
4. Install spring pin or other locking device to hold backstop
onto torque arm pin.
5. Check free and locked rotation of backstop. If satisfactory,
stake key to the shaft, Figure 8.
The Falk Corporation, P.O. Box 492, Zip 53201-0492
378-102
3001 W. Canal St., Zip 53208-4200, Milwaukee, WI USA Telephone : 414-342-3131
August 2004
Fax: 414-937-4359 e-mail: [email protected] web: www.falkcorp.com
Supersedes 6-92
®
a good name in industry
Quadrive Shaft Mounted Drives
•
Appendix B
Sizes 4407/M4407-4608/M4608
(Page 31 of 52)
TORQUE
ARM
PIN
TORQUE
ARM
PIN
SPRING
PIN
STAKE
KEY
BACKSTOP
KEY
CLEARANCE
CLEARANC
Figure 6
Figure 7
Figure 8
