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3800 SERIES SINGLE & DOUBLE
REDUCTION BASE TYPE GEAR DRIVES
NOTE: Bracketed numbers in table below refer to Notes section below table.
Average Shipping Weight: 221 Lbs.
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MODEL
|
RATIO (2)
|
REDUCTION (3) |
RATINGS (1)
|
GEARBOX (5) INERTIA
(LB-FT 2) |
DIA A. (INCHES)
|
KEYWAY B
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OUTPUT (RPM)
|
INPUT HORSEPOWER
|
OUTPUT TORQUE (IN-LB)
|
INPUT SHAFT (4) OVERHUNG LOAD CAPACITY (LBS)
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OUTPUT SHAFT (4) OVERHUNG LOAD CAPACITY (LBS)
|
|
38039S (6)
|
3.871
|
SINGLE
|
452
|
79.6 (7)
|
11,100
|
100
|
3600
|
0.24
|
1 5/8
|
3/8
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3805 (6)
|
5.090
|
DOUBLE
|
344
|
62.7 (7)
|
11,500
|
100
|
3600
|
0.25
|
1 1/4
|
1/4
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3806 (6)
|
6.004
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DOUBLE
|
291
|
54.1 (7)
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11,700
|
100
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3600
|
0.20
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1 1/4
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1/4
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38064 (6)
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6.424
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DOUBLE
|
272
|
51.0 (7)
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11,800
|
100
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3600
|
0.17
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1 1/4
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1/4
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3807 (6)
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6.882
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DOUBLE
|
254
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48.0 (7)
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11,900
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100
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3600
|
0.15
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1 1/4
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1/4
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38074 (6)
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7.382
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DOUBLE
|
237
|
45.1
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11,990
|
100
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3600
|
0.18
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1 1/4
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1/4
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3808 (6)
|
7.931
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DOUBLE
|
221
|
42.0
|
12,000
|
100
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3600
|
0.14
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1 1/4
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1/4
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38085 (6)
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8.536
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DOUBLE
|
205
|
39.2
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12,000
|
100
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3600
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0.12
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1 1/4
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1/4
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3809
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9.207
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DOUBLE
|
190
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36.5
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12,100
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100
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3600
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0.10
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1 1/4
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1/4
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3810
|
9.954
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DOUBLE
|
176
|
33.9
|
12,150
|
100
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3600
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0.10
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1 1/4
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1/4
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3811
|
10.792
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DOUBLE
|
162
|
31.5
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12,240
|
100
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3600
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0.10
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1 1/4
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1/4
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38117
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11.738
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DOUBLE
|
149
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29.1
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12,300
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300
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4270
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0.08
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1 1/4
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1/4
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3813
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12.814
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DOUBLE
|
137
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27.0
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12,450
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300
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4270
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0.08
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1 1/4
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1/4
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3814
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14.050
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DOUBLE
|
125
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24.7
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12,520
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300
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4270
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0.07
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1 1/4
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1/4
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3815
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15.484
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DOUBLE
|
113
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22.6
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12,600
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300
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4270
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0.06
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1 1/4
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1/4
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3816
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16.290
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DOUBLE
|
107
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21.6
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12,680
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300
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4270
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0.05
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1 1/4
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1/4
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3817
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17.167
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DOUBLE
|
102
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20.6
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12,760
|
450
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4630
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0.04
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1 1/4
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1/4
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3819
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19.327
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DOUBLE
|
91
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17.1
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11,880
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450
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4630
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0.04
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1 1/4
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1/4
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3820
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20.367
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DOUBLE
|
86
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16.2
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11,880
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450
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4630
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0.04
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1 1/4
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1/4
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3821
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21.502
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DOUBLE
|
81
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15.3
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11,850
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450
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4630
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0.04
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1 1/4
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1/4
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3823
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22.744
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DOUBLE
|
77
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14.6
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11,930
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525
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4630
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0.04
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1 1/4
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1/4
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3825
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24.681
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DOUBLE
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71
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12.5
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11,100
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525
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4630
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0.04
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1 1/4
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1/4
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3826
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26.055
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DOUBLE
|
67
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11.9
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11,190
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525
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4630
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0.04
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1 1/4
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1/4
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3828
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27.561
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DOUBLE
|
63
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11.3
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11,270
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525
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4630
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0.03
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1 1/4
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1/4
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3831
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30.658
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DOUBLE
|
57
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9.7
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10,700
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525
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4630
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0.03
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1 1/4
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1/4
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3834
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34.388
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DOUBLE
|
51
|
8.4
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10,360
|
620
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4630
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0.03
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1 1/8
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1/4
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3836
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36.542
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DOUBLE
|
48
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8.1
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10,660
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620
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4630
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0.03
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1 1/8
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1/4
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3841
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41.222
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DOUBLE
|
42
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6.5
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9,780
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620
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4630
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0.03
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1 1/8
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1/4
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3850
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50.337
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DOUBLE
|
35
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5.4
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9,750
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620
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4630
|
0.02
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1
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1/4
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NOTES
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Horsepower, torque, output speed and overhung load capacities based on 1750 rpm input speed and 1.00 Service Factor.
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Non-standard ratios available. Consult Dorris Company if desired ratio is not shown.
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Single reduction high speed shaft dimensions shown in parentheses ( ).
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Overhung load is measured at the midpoint of the key for the input and output shafts respectively.
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Measured at the input shaft.
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If a backstop is required consult Dorris Company for backstop torque capacity as it is less than the output torque rating shown.
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Consult Dorris Company for thermal capacity in your application. 
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