Nexen HG25 969043 - Manual (Page 6)

FORM NO. L-21276-B-1213 6
I
nstallatIon of
HG
to
M
acHIne
f
raMe
1. Before installing the HG into the machine frame:
a. Wipe the HG pilot and mounting face clean. Wipe
the internal pilot and HG mounting face of the
machine frame.
b. Apply a serviceable thread locking compound to
the threads of the HG mounting screws.
c. Gently guide the HG into the machine frame.
Install HG mounting screws, using a star pattern
while tightening to the torque values shown in
Table 1. These screws should be tightened to
25% of this value in the first iteration of the star
pattern, 50% in the second iteration, and 100%
in the final iteration.
HG OPERATION
DANGER
This product has moving parts that
can crush or cut appendages. Provide
adequate spacing or guarding from any
operating product.
WARNING
Use appropriate guarding for rotating
components. Failure to guard could
result in serious bodily injury.
WARNING
Ensure proper guarding of the product is
used. Nexen recommends the machine builder
design guarding in compliance with OSHA 29
CFR 1910 “Occupational Safety and Health
Hazards”.
WARNING
Never exceed maximum operating
speeds listed for your product. (See
Table 2).
TABLE 2
DISENGAGING AND REMOVAL OF THE HG
1. De-couple the load from the HG.
2. Disconnect the power source, ensuring that no torque
can be applied to the HG.
3. The motor/HG mechanism assembly can then be
disassembled from the machine, following the reverse
order of assembly steps.
4. If the motor is to be disassembled from the HG, it will
be necessary to direct a flashlight beam into the clamp
collar access hole in order to align the clamp collar
screw so that the hex key can easily be re-engaged to
loosen it. The HG will need to be slowly backdriven
so that the input rotates to achieve this alignment.
WARNING
Failure to properly support the load
before disengaging the HG could
cause serious harm to operators or
equipment.
LUBRICATION
The gearcase of the HG has been filled with a high quality
synthetic extreme pressure grease and is considered to
be “lubed for life”. It is not recommended, therefore, that
the geared pinion be field-serviced. Contact Nexen in the
event that the HG requires maintenance. The HG can be mounted in any orientation and requires
no special provisions for sealing or venting when
operating within the recommended ambient temperature
range of -5 to 40° C (23 to 104° F). Contact Nexen for
applications requiring the HG to operate outside of this
temperature range.
Harmonic Gearhead Maximum Speeds
Product / Ratio Motor RPM Output RPM
HG17 / 50:1 7300 146
HG17 / 80:1 7300 91
HG17 / 100:1 7300 73
HG17 / 120:1 7300 61
HG25 / 50:1 5600 112
HG25 / 80:1 5600 70
HG25 / 100:1 5600 56
HG25 / 120:1 5600 47