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

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RIGHT-ANGLE SHAFT-MOUNT
WITH TORQUE ARM (D)
RETAIN FOR FUTURE USE
U10600 - 1 of 2
1. Torque arm (D)
The preferred method of installing a shaft-mounted reducer
is to support the weight of the gear unit or gearmotor as-
sembly from the driven solid machine shaft. A torque arm
is required in order to restrain the gearbox, react the load
torque, and keep the gear unit from spinning around the
shaft.
The Torque-Arm (D) bracket is mounted to either side of the
right-angle gear unit using mounting screws that thread into
the B14 flange-face of the reducer. The anchor hole of the
torque-arm bracket is supplied with a resilient rubber bushing.
IMPORTANT NOTE
The side of the reducer that the torque arm is mounted
on, and the angular position can be specified at time
of order. Consult the appropriate NORD catalog for
specific Torque Arm (D) mounting options and ordering
guidelines.
2. Purpose of the built-in resilient rubber bushing
The resilient rubber bushing installed into the anchor hole
end of the torque-arm helps isolate and absorb all the load
forces present in the system and increase the reducer’s service
life by reducing cumulative torsional shock loads.
• The primary load force acts in the direction of driven shaft
rotation, reacts the load torque of the reducer, and
prevents the gearbox from spinning on the shaft.
• Additional forces present themselves in the direction
opposite of the shaft rotation, due to the typical slight
out-of-round condition present in the machine shaft. This
condition is the reason most shaft mounted-reducers have
a slight shaft-wobble, which is normal.
STOP
HARMFUL SITUATION
STOP
Always make sure that the Torque Arm (D) has the
resilient rubber bushing installed into the anchor hole
end of the torque arm. Failure to do so will not properly
cushion the reducer and can result in excessive binding,
bearing stress, and damage to the reducer.
3. Machine support
The user must supply a suitably strong and rigid mating ma-
chine support that provides load bearing capacity on both
sides of the torque-arm bracket.
WARNING
It is the responsibility of the machine builder to design a
support bracket of adequate strength and rigidity, and
supply an appropriate tightening bolt assembly. Failure
to do so may result in injury caused from a damaged or
broken torque-reaction assembly.
4. Installation of a right-angle reducer with torque arm
A. Make sure the Torque-Arm (D) is mounted in the correct
position on the reducer. Assembled screw heads should
always sit flush with the torque arm.
• To reposition the torque-arm, remove the mounting
screws, relocate the torque-arm, and reassemble the
mounting screws as noted above.
• If the torque-arm was shipped loose, position the
torque-arm in the correct location on the gear unit, and
secure the torque-arm as noted above.
IMPORTANT NOTES
• Torque arm mounting screws should be secured with
a thread locking product (ex. Loctite® 242 or Loxeal®
54-03) and tightened per the table on page 2.
• Assembled screw heads should always sit flush with
the torque arm.
• The support bracket should provide support on both
sides of the torque arm or be in the form of a U-shape.
• Do not force the torque-arm. The torque arm must
remain at a right angle to the gear unit.
• If mounting holes do not align properly the machine
support may need to be moved.
B. Install the right-angle hollow bore reducer onto the
machine shaft. Then line up the hole in the reducer’s
torque-arm with the hole in the machine’s support
bracket, and temporarily hold the reducer in place.
C. Apply a thread locking compound such as Loctite® 242 or
Loxeal® 54-03 to the end of the anchor bolt that is used to
secure the torque arm in place.
D. Place the anchor bolt through the support bracket and
the reducer torque-arm. Attach the mating nut to the
bolt and tighten the assembly until snug. At least one
bolt diameter should protrude from the nut after assembly.
WARNING
Do not force misalignment of the torque-arm. The torque
arm must remain at a right angle to the gear unit or exces-
sive load may be placed on the reducer shaft and bearings.
E. Properly secure the gear unit assembly to the driven shaft
in an axial direction.
www.nord.com/docs 04.15.15
NORD Gear Corporation
Toll Free in the United States: 888.314.6673
NORD Gear Limited
Toll Free in Canada: 800.668.4378