NBE Brawn mixer BTO Series, Operation And Maintenance Manual

Page: 27 / 40

BIM 1009/2007/09 Page 1 of 8 www.nord.com
WARNING:
LOCK OUT POWER before
any maintenance is
performed. Make absolutely
sure that no voltage is
applied while work is being
done on the gearbox.
NEMA/ IEC Motor Adapters
NORD Gear supplies a coupling that is to be mounted onto the motor shaft. It is important that the coupling is properly
positioned. For
NEMA Input Adapters , follow the Motor Installation Instructions below to insure full coupling engagement
onto the input shaft. For IEC Input Adapters , the supplied coupling will mount directly against the motor shaft shoulder.
No locating measurements need to be taken. NOTE: Some of the larger IEC inputs will have a coupling spacer included to
help locate the coupling. Slide the spacer against the motor shaft shoulder, slide the coupling against the spacer and tighten set screw(s).
For the larger motor adapters (IEC160 / N250TC and larger), an Automatic Lubricator is supplied. This will need to be activated at the
time of startup. For operation and activation instructions, refer to the “ Automatic Lubricator “ section.
NORD supplies three different types of couplings depending on the size of input: “J” style, “M” style and “Jaw” style coupling. Following are
instructions on how to properly mount each type of coupling onto the motor. First, identify which coupling has been supplied to you by
referring to the “
Couplings for the NEMA and IEC Adapters ” section on the next page. Make sure the motor flange and shaft are cleaned and
verify that the proper key is in the motor shaft.
“J” Style Coupling
NEMA C-face Motor Installation Instructions
1. Measure the distance from the face of the input adapter to
the face of the splined shaft and record that measurement as
A in the equation below.
2. Measure depth of coupling engagement zone and record the
measurement as “B” in the equation below.
3. Add “A” + “B” and subtract
0.08” (~2mm)
from the
distance. This needs to be done so that the coupling will
not be preloaded after installation!
4. Use that measurement to locate the coupling from the face
of the motor onto the shaft.
5. Once in place, tighten the set screw to lock the coupling in
place. It is recommended that the key is staked or bonded
(Loctite) in place to prohibit the key from vibrating out.
6. Mount the motor onto the input adapter with customer
supplied bolts. Make sure that the coupling from the adapter
and the motor engage securely. Use lock washers or Loctite
to prohibit bolts from becoming loose from vibration.
“M” Style Coupling
NEMA C-face Motor Installation Instructions
1. Measure the distance from the face of the input adapter to
the face of the splined shaft and record that measurement.
2. Subtract
0.31” (~8mm)
from the distance. This needs to
be done so that the coupling will not be preloaded after
installation!
3. Use that measurement to locate the coupling from the face
of the motor onto the shaft.
4. Once in place, tighten the set screw to lock the coupling in
place. It is recommended that the key is staked or bonded
(Loctite) in place to prohibit the key from vibrating out.
5. Mount the motor onto the input adapter with customer
supplied bolts. Make sure that the coupling from the adapter
and the motor engage securely. Use lock washers or Loctite
to prohibit bolts from becoming loose from vibration.
BIM 1009
NORD Gearbox Inputs
Installation and Maintenance Instructions
Retain These Safety Instructions For Future Use
CDN
USA
W-STYLE SUGAR SCOOP NEMA/IEC MOTOR MOUNT
PLATFORM
SET SCREW
TIGHTEN
DISTANCE
PLACEMENT
COUPLING
DISTANCE
SUBTRACT
DISTANCE
COUPLING PLACEMENT
- 0.080" (2mm) =
C
-F
ACE
M
O
T
O
R
DISTANCES
MEASURED
A
B
A + B
+
SUBTRACT
DISTANCE
- 0.310" (8mm) =
DISTANCE
COUPLING PLACEMENT
C
-F
ACE MO
TOR
MEASURED
DISTANCE
COUPLING
PLACEMENT
DISTANCE
TIGHTEN
SET SCREW