Pulsafeeder Pulsalube 8 GS Ultra, Руководство по эксплуатации и техническому обслуживанию

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SHAFT FIXING KIT
RETAIN FOR FUTURE USE
1. Shaft fixing kit - basic design
The NORD Fixing Kit provides a method for securing the
reducer in an axial direction, after the keyed-hollow shaft
reducer is mounted onto the machine shaft. The fixing kit
prevents the reducer from shifting or walking out of place
during operation. NORD offers a variety of standard fixing
kits, based upon bore size, as shown on Page 2 of this manual.
Figure 1 – Fixing kit components
SCREW
PLUG
RETAINING
WASHER
LOCK
WASHER
SNAP-RING
IMPORTANT NOTE
For installation of the keyed-hollow bore reducer to the
machine-shaft, see user manual U10270.
2. Assembly types
There are two types of assembly methods commonly used for
securing the fixing kit.
Figure 2 – Fixing kit assembly methods
Type 1
The machine-shaft is located against a fixed snap-ring
located inside the bore of the reducer.
Type 2
The machine shaft is shouldered and is pulled tight against
the hollow-shaft; the snap-ring is no longer required.
STOP
HARMFUL SITUATION
STOP
The maximum edge break on the solid machine shaft must
not exceed the values shown on Page 2 of this manual.
Otherwise the load-bearing capacity of the snap-ring will
be reduced and may result in failure.
3. Assembly
A. If using a Type 1 assembly, secure the appropriate snap-
ring into the bore of the reducer. With Type 2 assembly, no
snap-ring is required.
B. Draw the hollow bore gear reducer onto the machine
shaft as instructed in U10270. Remember to apply a
suitable assembly paste or anti-seize compound to the
mating shafts.
C. Install the retaining washer over the end of the hollow
bore.
D. Secure the appropriate cap-screw into the machine shaft
and tighten the screw based upon the assembly type, as
noted below. Then install the protective plug over the
screw hole.
Type 1 - Screw tightening
Tighten until lightly snug and secure the screw with a thread-
locking compound to prevent the screw from backing out.
STOP
HARMFUL SITUATION
STOP
Over tightening the retaining screw may cause the snap
ring to be pulled out of its seating groove, causing dam-
age to the hollow-bore or snap ring.
Type 2 - Screw tightening
Follow the cap screw manufactures guidelines and tighten
the screw to the proper torque, based upon the bolt grade
and material. For reference tightening torque values, also see
manual U10060, Table 2.
4. Disassembly
When using Type 2 assembly, it is possible to design a simple
disassembly tool to allow easier removal of the hollow-bore
reducer. The solid shaft is shouldered to rest against the hol-
low-bore of the reducer. The machine shaft is supported in
both of the hollow bore land areas, but the overall length is
reduced compared to Type 1 assembly.
Figure 3 – Disassembly Tool
REDUCER
SHAFT KEY SNAP-RING
MACHINE
SHAFT THRUST
WASHER JACKING
NUT
JACKING
BOLT
IMPORTANT NOTE
For suggestions on how to construct a disassembly tool for
a particular reducer and bore size, please consult NORD’s
application engineering department.
U10280 - 1 of 2
www.nord.com/docs 03.09.15
NORD Gear Corporation
Toll Free in the United States: 888.314.6673
NORD Gear Limited
Toll Free in Canada: 800.668.4378