131 / 436
www.grovegear.com
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
131
Total
GEAR REDUCER SIZE
Ratio
813
815 (GR+NH)
818
821
824
826
830**
P
S
P
S
P
S
P
S
P
S
P
S
P
S
813
813
813
815
813
818
813
821
813
824
813
826
818
830
75
5
15 5
15
5
15
5 15
5
15
5
15
5
15
100
5
20 5
20
5
20
5 20
5
20
5
20
5
20
150
10
15 7.5
20 10 15 10 15
10 15 7.5 20
10 15
200
10
20 10
20 10 20 10 20
10 20 10 20
10 20
250
10
25 10
25 10 25 10 25
10 25 10 25
10 25
300
10
30 15
20 10 30 15 20
15 20 15 20
20 15
400
20
20 20
20 20 20 20 20
20 20 20 20
20 20
500
20
25 25
20 25 20 25 20
25 20 25 20
20 25
600
20
30 30
20 20 30 30 20
20 30 30 20
20 30
750
30
25 30
25 25 30 25 30
25 30 30 25
30 25
900
30
30 30
30 30 30 30 30
30 30 30 30
30 30
1000
40
25 50
20 50 20 50 20
50 20 50 20
40 25
1200
40
30 60
20 40 30 40 30
40 30 60 20
40 30
1500
60
25 60
25 50 30 50 30
50 30 60 25
60 25
1800
60
30 60
30 60 30 60 30
60 30 60 30
60 30
2400
60
40 60
40 60 40 60 40
60 40 60 40
60 40
3000
60
50 60
50 60 50 60 50
60 50 60 50
60 50
3600
60
60 60
60 60 60 60 60
60 60 60 60
60 60
DOUBLE REDUCTION & WORM–WORM EXACT RATIO COMBINATIONS
Exact Ratios
GR, NH & EL Series
Note:
Exact ratios are listed. P = Primary stage reducer ratio S = Secondary stage reducer ratio
* Actual ratio combinations supplied by Factory may vary from above depending on application and manufacturing requirements.
** For NH Series, P = 815
Total
GEAR REDUCER SIZE
Ratio
832**
842
852
860
870
880
8100
P
S
P
S
P
S
P
S
P
S
P
S
P
S
818
832 821
842
826
852
832
860 832
870
842
880
852
8100
75
5
15 5
15 5.17 15 5.17 15 5.17 14.67 5.17 14.67 5.13 14.67
100
5
20 5
20 5.17 20 5.17 20 5.17 20.50 5.17 20.50 5.13 20.50
150
5
30 7.5 20 7.5 20 10
15 7.5 20.50 7.5 20.50 10 14.67
200
10
20 10 20 10 20 10
20 10 20.50 10 20.50 10 20.50
250
10
25 10 25 10 25 10
25 10 24.50 10 24.50 10 24.50
300
10
30 15 20 15 20 20
15 15 20.50 15 20.50 20 14.67
400
20
20 20 20 20 20 20
20 20 20.50 20 20.50 20 20.50
500
25
20 25 20 25 20 25
20 25 20.50 25 20.50 25 20.50
600
20
30 30 20 30 20 30
20 30 20.50 30 20.50 30 20.50
750
25
30 25 30 30 25 30
25 30 24.50 30 24.50 30 24.50
900
30
30 30 30 30 30 60
15 30 29.50 30 29.50 60 14.67
1000
25
40 25 40 40 25 50
20 50 20.50 40 24.50 50 20.50
1200
40
30 40 30 40 30 60
20 60 20.50 40 29.50 60 20.50
1500
50
30 50 30 60 25 60
25 60 24.50 60 24.50 60 24.50
1800
60
30 60 30 60 30 60
30 60 29.50 60 29.50 60 29.50
2400
60
40 60 40 60 40 60
40 60 40 60 40
60
40
3000
60
50 60 50 60 50 60
50 60 50 60 50
60
50
3600
60
60 60 60 60 60 60
60 60 60 60 60
60
60
For exact total of double reduction package multiply “P” by the “S” ratio.