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Single Reduction
Worm Gear Reducers
Double Reduction
Worm - Worm Gear Reducers
Double Reduction
Helical - Worm Gear Reducers
WASHGUARD
®
Reducers
and GEAR+MOTOR™
Ratio Multipliers
Accessories and
Additional Capabilities
136
Maximum Rating Tables
(3 4FSJFT t "MM 4UPDL 4UZMFT
:0A,:
: -
SIZE GR870
SIZE GR880
SIZE GR8100
Overall
Input
Output
Input
Output
Output
Input
Output
Output
Input
Output
Output
Ratio
RPM
RPM
HP
HP
TQ
HP
HP
TQ
HP
HP
TQ
(lb-in)
(lb-in)
(lb-in)
1750 23.30
9.13
7.55
20601
15.50 13.00
35507
26.50
22.50
61010
75
1170 15.60
7.69
6.16
25161
12.00
9.78
39931
20.40
16.90
68348
1750 17.50
9.13
7.22
27535
12.60 10.10
38575
20.80
17.00
64363
100
1170 11.70
7.04
5.37
30607
9.55
7.40
42191
16.20
12.80
72302
1750 11.70
7.25
5.53
30621
9.82
7.62
42212
16.50
13.00
72069
150
1170
7.80
5.31
3.90
32270
7.23
5.41
44811
12.30
9.38
77678
1750
8.75
5.81
4.32
31857
7.92
5.98
44158
13.50
10.30
76261
200
1170
5.85
4.21
3.00
33136
5.75
4.18
46181
9.93
7.31
80671
1750
7.00
4.90
3.54
31238
6.61
4.88
43010
11.30
8.45
74571
250
1170
4.68
3.55
2.46
32432
4.80
3.40
44863
8.31
5.96
78638
1750
5.83
4.27
2.99
33136
5.82
4.17
46181
10.10
7.29
80671
300
1170
3.90
3.06
2.05
34024
4.19
2.87
47593
7.29
5.06
83779
1750
4.38
3.41
2.29
33805
4.65
3.20
47245
8.12
5.62
83011
400
1170
2.93
2.43
1.56
34477
3.33
2.19
48316
5.85
3.87
85377
1750
3.50
2.86
1.85
34209
3.88
2.60
45835
6.89
4.57
84431
500
1170
2.34
2.04
1.26
34752
2.78
1.77
46812
4.96
3.13
86351
1750
2.92
2.53
1.56
34477
3.43
2.18
48316
6.03
3.86
85377
600
1170
1.95
1.81
1.06
34936
2.46
1.48
49049
4.34
2.63
87006
1750
2.33
2.13
1.27
33682
2.87
1.77
46812
5.04
3.13
82964
750
1170
1.56
1.53
0.86
34109
2.05
1.20
47481
3.63
2.13
84459
1750
1.94
1.73
1.01
32016
2.50
1.47
46627
4.13
2.49
79353
900
1170
1.30
1.24
0.68
32391
1.80
0.99
46972
2.97
1.69
80681
1750
1.75
1.73
0.95
35031
2.34
1.33
49201
4.21
2.37
87344
1000
1170
1.17
1.24
0.64
35308
1.68
0.90
49644
3.05
1.60
88332
1750
1.46
1.52
0.79
35168
2.05
1.12
49420
3.73
1.98
87832
1200
1170
0.975
1.10
0.53
35402
1.48
0.75
49793
2.72
1.34
88666
1750
1.17
1.28
0.65
34325
1.71
0.90
47819
3.13
1.61
85216
1500
1170
0.780
0.93
0.44
34542
1.23
0.61
48159
2.28
1.09
85980
1750
0.972
1.04
0.51
32580
1.29
0.67
42944
2.56
1.28
81353
1800
1170
0.650
0.76
0.34
32770
0.93
0.45
43207
1.86
0.86
82031
1750
0.729
0.90
0.39
33661
1.20
0.54
46987
2.17
0.96
83314
2400
1170
0.488
0.65
0.26
33868
0.87
0.37
47314
1.59
0.65
84037
1750
0.583
0.76
0.30
32512
1.02
0.42
45708
1.83
0.78
80836
3000
1170
0.390
0.55
0.20
32710
0.74
0.29
46025
1.35
0.51
81535
1750
0.486
0.60
0.23
29307
0.80
0.32
41112
1.46
0.57
73284
3600
1170
0.325
0.44
0.15
29473
0.58
0.21
41376
1.07
0.38
73877
* Actual ratio combinations supplied by Factory may vary from above depending on application and manufacturing requirements.
Refer to page 141 for exact ratio of worm gear primary stage and worm gear secondary stage.
At speeds above 1750 input RPM, gear reducers may become thermally limited. For continuous operation,
limit input HP to 1750 RPM input ratings shown. Contact Factory with application requirements if higher speeds are required.
For input/ output shaft overhung load and thrust load ratings, refer to pages 646-648.
Select and order
double reduction
reducers with
model number.
Refer to page 122
for Model Number
System.