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mounting a rigid base (footed) motor vertically is the responsibility of
the installer.
= $%
' (&
% ? 5 * Most standard horizontal motors thru
449 Fr. (excluding brake motors) can be mounted in a vertical shaft
down orientation. For vertical brake motors see section 3.3.6.2.
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' (&
% /;*
5 $
6*
& G $? /(
/ %* Hazardous locations motors must
vertically shaft up without approval by the motor manufacturer.
Without proper retaining provisions the rotor may move axially and
contact components, creating a spark hazard.
7
$
'
following frame sizes / constructions with applied (axial) down
loads within the limit stated are acceptable when mounted vertical
shaft up.
% 1
! < 7
$
( 3
TEFC &
56
ODP
TEFC
140
ODP
TEFC
180
ODP
TEFC
210
ODP
TEFC
250
ODP
320 TTFC
models
All Other
TEFC
280 320
ODP
TEFC &
ODP
TEFC
360 &
ODP
Up
TEFC &
ODP
Notes:
1
For TEFC model numbers beginning with 324TTFC or 326TTFC
consult the motor manufacturer to determine if a build up motor
is required.
2 The max applied down load is any applied load external to the
motor, including such things as sheave weight, fan loads, axial
belt force, pump load, etc. If the application is direct drive with
no applied radial load, consult the motor manufacturer.
3 "Build up only", refers to motors that are specifically ordered
and built for shaft up applications. It does not imply that all build
up motors are suitable for shaft up applications.
!,!
;;'
%
((
/%
*
I/ ;
Do not connect or couple motor to load until correct rotational direction
is established.
!,!,<
6
$ '* ;$ ; $
driven equipment minimizes vibration levels, maximizes bearing life,
and extends the overall life of the machinery. Consult the drive or
equipment manufacturer for more information.
/%
*
7
$ 6
During assembly do NOT force components onto the shaft. Striking
or hammering the component may result in bearing damage.
'
%
(
% be mounted
+-
)
'
(-
/
F
Steel
Yes
Steel & Cast
Yes
Iron
Steel
Yes
All
Yes
Steel
Yes
All
Yes
Steel
Yes
All
Yes
Steel
Yes
2
Cast Iron
No
1
Cast Iron
Eng
Cast Iron &
Yes
Aluminum
2
Cast Iron
No
Build Up
Steel
4
Only
Build Up
Cast Iron
4
Only
2
Cast Iron
No
Build Up
Steel
4
Only
7'. %
% $*
% ?
6 *
' 6
%
of the motor and
'/$
!,!,#
For applications that apply radial, axial or moment loading on the
motor shaft see section 3.3.3.
Unless approved by the motor manufacturer do
vertical shaft up or roller bearing motor. Direct coupling a vertical
shaft up motor or a motor with a roller bearing may result in bearing
damage.
= $%
'
!,!,!
connected equipment (gears, fans etc.) must be approved by the
motor manufacturer unless within the maximum overhung load limits
(Table 3 2). Combined loading (axial, radial and/or moments) must
be approved by motor manufacturer. For belted loads see section
0
: The
3.3.4.
% 1
B
B
? +
!
143T
'
145T
25 lbs
182T
25 lbs
184T
25 lbs
213T
35 lbs
215T
35 lbs
254T
40 lbs
40 lbs
256T
40 lbs
284T
40 lbs
286T
N/A
324T
N/A
326T
364T
30 lbs
365T
N/A
404T
N/A
405T
444T
N/A
445T
N/A
447T
N/A
449T
Values based on 26,280 hrs B 10 Life
For "End of Shaft" Load multiply value by 0.88
To convert from lbf to N multiply value by 4.4482.
!,!,@
7 '% ?*
The goal of any belted system is to efficiently transmit the required
torque while minimizing the loads on the bearings and shafts of the
motor and driven equipment. This can be accomplished by following
four basic guidelines:
1.
Use the largest practical sheave diameter.
2.
Use the fewest number of belts possible.
3.
Keep sheaves as close as possible to support bearings.
4.
Tension the belts to the lowest tension that will still transmit the
required torque without slipping. It is normal for V belts to
squeal initially when line starting a motor
!,!,@,<
In general, smaller sheaves produce greater shaft stress and shaft
deflection due to increased belt tension.
recommended minimum sheave diameters. Using larger sheaves
increases the contact with belts which reduces the number of belts
required. It also increases the belt speed, resulting in higher system
efficiencies.
manufacturer's recommended maximum belt speed, typically 6,500
feet per minute for cast iron sheaves. Determine belt speed by the
following formula:
? $
%
/;' 6*
Use flexible couplings if possible.
/%
*
7
$ 6
'/$
? $
%
% ?*
! #
B
$
'
'
4 -
$
1
!
<
106
166
109
170
187
230
193
237
319
317
327
320
500
631
510
631
866
871
950
950
1078
1078
1388
1400
1580
1520
1455
1640
(-
) ?
6
When selecting sheaves, do not exceed the
% direct couple a
Radial loading for direct
1
J
- (-
$;
<#
K
193
210
199
218
261
287
273
301
470
510
480
533
729
793
736
820
990
1100
1005
1107
1100
1215
1113
1230
1365
1515
1380
1540
1590
1762
1610
1780
1795
2005
1795
1985
1765
1985
1885
2130
*
See Table 3 3 for
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