NORD Drivesystems B1000 - Manual (Page 25)

www.nord.com A23 G1000 – Subject to Change Without Notice
INTRODUCTION
Gear Unit
Options
Rubber Buffers (G)
Two rubber buffers are installed on the integral torque
tab located on the Clincher
TM & on the torque bracket
of the larger Bevel units to dampen torsional shock
loads delivered to the reducer. The use of rubber buf-
fers can increase the reducer’s service life by reducing
cumulative torsional shock loads. For further dampen-
ing, several rubber buffers may be used in a row. For
dimensions see page 387.
FD = Force working on the rubber buffer [lb]
d x l = Diameter x length
c = Thickness
S
F D
= Distance buffers compress at force (FD)
CAUTIONS
When installing, rubber buffers should be tightened until
free play between the contact surface is eliminated.
Heavy Duty Rubber Buffers (VG)
Heavy duty rubber buffers are also available on Clincher™
reducer sizes SK7282 to SK12383. These heavy duty buf-
fers provide the same benefi ts as the standard “G” buf-
fers but are usable in more severe shock applications.
CAUTIONS
When installing, rubber buffers should be tightened until
free play between the contact surface is eliminated.
Hollow Shaft Cover (H)
An optional cover can be used to guard from rotat-
ing hollow output shafts. It also protects the output
shaft seals against dust and dirt particles and in some
cases can be sealed against moisture and dust.
Shrink Disc Cover (SH)
The shrink disc cover is required with all shrink disc
units and provides protection from the rotating
shrink disc.
IP66 Hollow Shaft Cover (H66)
NORD provides hollow shaft covers with IP66 enclo-
sure protection (protection against dust and water
jets) to completely seal the rotating hollow shaft
from moisture and debris.
Fixing Element Kit (B)
(shaft shoulder fi xed and snap ring fi xed)
Due to the slight oscillations inherent in any rotating
shaft, NORD offers an optional “fi xing element kit”.
This is a method to prevent the reducer from “walk-
ing out” of position. The kit includes all necessary
parts to secure the shaft in the axial direction by using
a tapped hole in the end of the mating male shaft.
There are two methods for securing the fi xing
element kit. The fi rst involves pulling the customer
supplied male shaft to the snap ring (type 1) and the
second method the customer supplied shaft is shoul-
dered (type 2) and pulled against the hollow shaft
and not the snap ring.
d x l
S
F D
Shaft Shoulder Fixed (Type 2) Snap Ring Fixed (Type 1)
?
NOTE: Cover location is required for
90 series bevel units