Louisville CD-1261, Руководство пользователя

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Installation, Operation & Maintenance Manual
IM-995
15
Flexible Couplings
(refer to safety section)
These instructions are general for the installation of several types of flexible couplings and should not be used as a substitute
for more specific manufacturer’s instructions. The coupling manufacturer’s installation data is available and will give specific
dimensions for alignment limits, lubricants, etc. Refer to Item 7 in "Factory Assembled Units" section for coupling alignment
requirements.
Before preparing to mount the coupling, make sure that all bearings, inlet vanes, shaft seals or other components have been
installed on the shaft.
When mounting and keying the coupling halves to the shaft, follow supplied instructions for heating and shrink fitting. Set the
coupling halves for the normal gap specified by the manufacturer. Coupling gap is illustrated below. It is advisable to set the
motor on the pedestal first to better determine the placement of the coupling on the shaft.
ANGULAR PARALLEL GAP AND
MISALIGNMENT MISALIGNMENT END FLOAT
X-Y = ANGULAR MISALIGNMENT
P
= PARALLEL OFFSET (MISALIGNMENT)
F = END FLOAT
*
The two types of misalignment are illustrated above. Alternatively angular alignment is checked with feeler gauges between the
hub faces. When angular alignment has been adjusted to manufacturer’s specification, parallel alignment can be checked with
a dial indicator on the hub or a straightedge and feeler gauges on the hub halves’ O.D. When shimming has brought parallel
alignment within specification, angular alignment and gap should again be checked, and adjustments made if necessary. A dial
indicator or laser alignment may be used to more accurately take the measurements described above.
Special adjustments may need to be made for couplings used with some equipment. As an example, when used with motors
with sleeve bearings, couplings may require provisions for limiting end float. Larger drivers may grow in operation (due to heat
expansion) requiring the driver side to be set slightly low when not operating. A good rule of thumb is to set the motor low by
0.001 inches per inch of motor shaft diameter up to 0.005". Refer to specific instruction manuals or assembly drawings.
Thoroughly clean the coupling halves after completion of alignment. Reassemble the coupling and tighten bolts, washers and
locknuts. Lubricate per manufacturer’s recommendations.
1. End float is the permissible axial movement of the coupling hub(s) within the sleeves of the coupling
2. End float will allow for thermal movement
3. Limited end float couplings are often required in applications using motors with sleeve bearings *