Nabrico DF-1 N Series, Owner'S Manual

Page: 47 / 72

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NABRICO DF-1 N ELECTRIC WINCH Owner’s Manual
OM-DF1-021-A
BIM 1001/2005/03 1 www.nord.com
Installation Instructions:
1. Mating shaft tolerances are normally tighter for shrink discs
due to the gripping forces needed. Customer shaft diameter
has to be machined according to ISO h6 or f6 tolerances (f6
easier to machine but lower gripping forces as shown in
catalog). Refer to Table 1 for h6 and f6 tolerances for
customer shafts.
2. Remove transportation spacers (if provided) located
between outer collars. Do not take the unit apart .
3. Lightly tighten locking screws until most play between outer
collars and the conical inner ring (ferrule) is eliminated. You
must be able to easily turn the ferrule with your fingers.
4. Lightly lubricate the bore of the ferrule, with grease, for
easier mounting onto outside diameter of the reducer hollow
shaft.
5. Slide the shrink-disc onto hollow shaft.
6. Wipe the reducer bore and the mating solid shaft clean of
any lubricants and dirt. Only use solvent if the parts feel oily
to the touch after wiping with a clean rag.
7. Slide the reducer onto the solid shaft until it is about half way
through.
8. Lubricate the remaining portion of the solid shaft with a #2
grease, where it will be inserted into the hollow shaft.
9. Tighten the locking screws in a circular pattern. Refer to
Table 2 for tightening torques. Initially, tighten locking
screws finger tight to position outer collars. Then tighten 1/4
to 1/2 turn at a time until specified tightening torque (per
table) is reached.
10. Continue tightening each bolt at rated torque until no further
rotation is seen. This assures the shrink disc is fully seated.
BIM 1001
Hollow Shrink Disc Shaft
Installation and Maintenance Instructions
Retain These Safety Instructions For Future Use
CDN
USA
Warning:
The surface area between the hollow shaft and the
solid shaft must be free of lubricant or the
connection may slip in service.
Warning:
Always tighten in a circular pattern. Never tighten
bolts in a star pattern or connection may slip in
service.