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High Efficiency Helical - Bevel
Gear Reducers
High Efficiency Parallel Shaft
Gear Reducers
Stainless Steel &
WASHGUARD
®
High Efficiency Gear Reducers
Technical Information
Warnings and Cautions
Terms and Conditions
638
Technical Information
Bolt Circle Dimensions
A
B
A
B
BOLT SIZE
Sizes 815 - 821
Size 813
Special reverse
housing assembly
Sizes 824 - 8100
F
E
BOLT SIZE
GR SERIES INPUT COVER DIMENSIONS
UNIT
C
D
E
F
BOLT SIZE
813
1.219
2.438
N/A
N/A
.312-18
815
1.219
2.438
N/A
N/A
.312-18
818
1.219
2.438
N/A
N/A
.312-18
821
1.219
2.438
N/A
N/A
.312-18
824
1.313
2.625
0.781
1.562 .312-18
826
1.313
2.625
0.781
1.562 .312-18
830
1.600
3.200
1.050
2.100 .438-14
832
1.600
3.200
1.050
2.100 .438-14
842
1.600
3.200
1.050
2.100 .438-14
852
1.600
3.200
1.050
2.100 .438-14
860
1.370
2.740
1.370
2.740 .438-14
870
2.033
4.066
2.033
4.066 .438-14
880
2.121
4.242
2.121
4.242 .500-13
8100
Consult Factory
.625-11
INTEGRAL SIDE
OF HOUSING
45
A
G
D H
(NON-COVER SIDE)
GR & NH SERIES OUTPUT COVER DIMENSIONS
UNIT
A
B
G
H BOLT SIZE
813
1.016
2.033
1.768
1.768 .312-18
815
1.016
2.033
1.768
1.768 .312-18
818
1.480
2.961
2.051
2.051 .312-18
821
1.480
2.961
2.652
2.652 .312-18
824
1.856
3.712
2.652
2.652 .312-18
826
1.856
3.712
2.652
2.652 .312-18
830
2.298
4.596
3.536
3.536 .375-16
832
2.298
4.596
3.536
3.536 .375-16
842
2.939
5.877
3.712
3.712 .438-14
852
3.359
6.717
5.303
5.303 .438-14
860
Consult Factory
.500-13
870
Consult Factory
.500-13
880
Consult Factory
.500-13
8100
Consult Factory
.500-13
Special reverse housing assembly - Contact Factory for availability.
BOLT SIZE
C
D
C
D
E F
BOLT SIZE
Series GR & NH reducers do not have tapped holes on
“integral cover side” of reducer. Integral side of reducer
can be machined with tapped holes. See reverse
housing assembly below for dimensions.
UNIT
C
D
E
F
BOLT SIZE
813
1.219
2.438
N/A
N/A
.312-18
815
1.219
2.438
N/A
N/A
.312-18
818
1.219
2.438
N/A
N/A
.312-18
821
1.219
2.438
N/A
N/A
.312-18
824
1.313
2.625
0.781
1.562
.312-18
826
1.313
2.625
0.781
1.562
.312-18
830
1.313
2.625
0.781
1.562
.312-18
832
1.313
2.625
0.781
1.562
.312-18
842
1.600
3.200
1.050
2.100
.438-14
852
1.600
3.200
1.050
2.100
.438-14
NH SERIES INPUT COVER DIMENSIONS
UNIT
A
G
H
BOLT SIZE
813
2.500
1.768
1.768
.312-18
815
2.500
1.768
1.768
.312-18
818
2.900
2.051
2.051
.312-18
821
3.750
2.652
2.652
.312-18
824
3.750
2.652
2.652
.312-18
826
3.750
2.652
2.652
.312-18
830
5.000
3.536
3.536
.375-16
832
5.000
3.536
3.536
.375-16
842
5.250
3.712
3.712
.438-14
852
7.500
5.303
5.303
.438-14
GR & NH SERIES INTEGRAL SIDE OF HOUSING