EATON
Torque Limiting Coupling Installation, Operation and Maintenance Manual E-MEQD-II002-E September 2015
10
2.4.6
Shim and shift the base of the movable shaft to
correct the misalignment. After tightening the base,
recheck the alignment and correct if necessary.
Make sure to check for a “soft foot” condition.
Dowel or chock into position after satisfactory
aligment has been achieved.
Note: On some applications, thermal growth of the mill or gear
reducer (if present) may result in unacceptable shaft alignment in
a running condition. It is always a good practice to make a “hot
alignment” check and the shim if necessary.
2.5
Axial locking device adjustment
2.5.1
If the "X" dimension shown on Table 2 could not
be achieved /- 0.250 inch (6.4mm), the
axial locking device has a provision to accommodate
this variation.
2.5.2
Position the motor shaft on its magnetic center and
measure the gap between the faces of the drum hub
and spider ("X" dimension on Table 2). The difference
between this measured dimension and the value
shown on Table 2 is the amount of correction to be
made with adjustment of the axial locking device.
2.5.3
Referring to Figure 8, the overall length of the axial
locking device can be adjusted by relocating shims
(11 / 17) from one side of a bearing to another.
2.5.3.1 Remove four hex head screws and lock washers
(6,7) from the bearing housing (8) and adapter
plate (1 or 9).
2.5.3.2 Remove the snap ring (2) from the bearing housing.
2.5.3.3 After ensuring the shaft (3) is clean and free of
foreign matter, nicks or burrs in the area between
the two bearing housings, slide the bearing housing
assembly toward the opposite bearing housing
assembly to expose the bearing/spacer
assembly (10,11,17).
2.5.3.4 Remove the bearing locknut and lockwasher (13,14)
from the shaft.
2.5.3.5 The assembled length of the axial locking device is
established by the location of the bearings with
respect to the shaft. The assembled length can
therefore be adjusted by moving spacers from
one side of the bearing to the other. Two
thicknesses of spacers are included in each
assembly 0.025 inch (0.6 mm) and 0.098 inch
(2.5 mm). After making the appropriate assembled
length adjustment, reassemble, making sure the
thinner spacers are against the bearing.
Note: After axial length adjustment (if any) spacers (17) must
always be installed in contact with bearing (10) inner race,
and must never be allowed to be in shaft (3) groove at bearing
lockwasher (14) location after final tightening of bearing
locknut (13)
Torque Limiting Coupling
Figure 8
2
1
4
3
6
5
8
7
10
9
12
11
14
13
17
15
18
Item description axial locking assembly
Item Description
1
Spider adapter plate
2
Internal snap ring
3 Shaft
4
Grease seal
5
Grease fitting
6
Hex head screw
7 Lockwasher
8
Bearing housing
9
Drum adapter plate
10 Bearing
11 Spacer
12
External snap ring
13
Bearing locknut
14
Bearing lockwahser
15
"O" Ring
17 Spacer
18
Spacer (Wired to spider adapter plate)
