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For safety and to comply with local and national safety codes, the purchaser or user must provide protective
guards over all shaft extensions and devices mounted thereon.
WARNING
www.grovegear.com
BRAVO
®
Single Reduction Reducers
BRAVO
®
Worm - Worm
Double Reduction
BRAVO
®
Helical - Worm
Double Reduction
BRAVO
®
Accessory Kits
High Efficiency Helical - Inline
Gear Reducers
High Efficiency Helical - Worm
Gear Reducers
VO
AD
A
E
OA
J
M
TAP
D
H
DIA HOLES
OUTPUT
SHAFT
UY
BC
FM
TAP
FV
FO
C
BA
U
F
B
G
Q
V
X
DB
FU
INPUT
KEY
FZ
INPUT
SHAFT
K
RBN8107
RBN897
RBN877
RBN887
13.42
15.25
387
341
8.66
220
11.34
288
14.37
17.32
440
365
9.65
12.59
320
245
14.00
408
16.08
356
253
9.97
304
11.96
5.51
9.84
11.42
290
250
6.69
170
0.69
18
1.02
26
23
0.91
0.75
19
0.98
1.50
38
1.38
1.11
3.55
102
4.00
90
2.93
74
2.16
55
35
28
25
8.07
14.57
12.21
10.24
370
310
260
205
6.30
7.28
185
160
4.53
115
10.47
266
13.04
331
15.84
402
426 483
12.99
16.41
417
19.00
330
10.79
274
140
180
7.09
225
8.86
250
9.84
16.78
8.47
215
5.51
140
86
73
2.87
3.39
49
60
1.91
2.36
0.45
9
0.35
11
N/A
N/A
N/A
N/A
A
Size
RBN867
RBN847
7.48
8.14
207
190
B
AD
7.87
9.13
232
200
7.93
216
8.50
201
D
BA
5.32
5.91
150
135
0.53
14
14
0.53
G F
E
0.82
21
0.75
2.18
61
2.39
55
19
J
H
7.68
6.50
195
165
OA
3.94
3.94
100
100
8.48
215
9.08
231 240
8.40
213
9.44
Q
115
4.53
130
5.12
DB
1.91
1.91
49
49
N/A
6
0.24
N/A
K
RBN837
5.72
145
6.30
160
168
6.61
4.33
110
0.39
10
0.59
1.40
35
15
5.12
130
2.95
75
6.68
170
7.29
185
90
3.54 1.50
38
0.29
7
RBN857
7.48
190
7.87
200
7.93
201
5.32
135
14
0.53
0.75
2.18
55
19
6.50
165
3.94
100
8.48
215
8.40
213
115
4.53 1.91
49
N/A
N/A
1/2-13 x 1.13
3/8-24 x 0.88
3/8-24 x 0.91
M
1.51
1.36
1.10
UY
2.76
2.36
N/A
V
KEY
U
VO
0.41
0.44
0.40
Size
RBN847
RBN867
RBN837
1.000
1.250
1.375
1/4 x 1/4 x 1-1/2
1/4 X 1/4 x 1-11/16
5/16 x 5/16 x 1-3/4
1.625
2.875
2.375
2.125
RBN8107
RBN877
RBN887
RBN897
3.19
5.51
2.34
2.64
1.78
3.94
4.72
3.15
0.67
0.45
0.64
0.70
3/4 x 3/4 x 4-1/8
1/2 x 1/2 x 2-5/8
5/8 x 5/8 x 3-3/4
3/8 x 3/8 x 2-1/4
3/4-10 x 1.61
3/4-10 x 1.61
3/4-10 x 1.61
5/8-11 x 1.38
1/2-13 x 1.13
1.51
N/A
0.44
RBN857
1.375
5/16 x 5/16 x 1-3/4
Model
4.21
4.35
4.12
3/16 x 3/16 x 1-1/16
3/16 x 3/16 x 1-1/16
0.625
0.750
Size
FU
0.82
0.69
FZ
1.57
1.57
FV
0.25
0.25
FO
KEY
N/A
N/A
FM
* See Page 444 For Additional Shaft Diameters Available.
9.62
7.29
3.92
4.10
5/16 x 5/16 x 2-3/8
1/4 x 1/4 x 2-1/2
1.125
1.375
1.51
1.23
3.15
2.63
0.35
N/A
1/2-13 x 1.41
3/8-16 x 1.00
RBN847
RBN867
RBN837
RBN8107
RBN877
RBN887
RBN897
Dimensions subject to change without notice
4.35
RBN857
RBN847
RBN867
RBN837
RBN8107
RBN877
RBN887
RBN897
RBN857
15.82
14.78
12.12
C
31.46
25.79
19.66
16.70
14.78
BC
3/16 x 3/16 x 2
0.875
0.95
2.25
N/A
1/4-20 x 0.75
3/16 x 3/16 x 1-1/16
0.750
0.82
1.57
0.25
N/A
3/16 x 3/16 x 1-1/16
0.750
0.82
1.57
0.25
N/A
3/16 x 3/16 x 1-1/16
0.750
0.82
1.57
0.25
N/A
RBN827
5.72
145
6.30
160
168
6.61
4.33
110
0.39
10
0.59
1.40
35
15
5.12
130
2.95
75
6.68
170
7.29
185
90
3.54 1.50
38
0.29
7
3/8-24 x 0.91
N/A
0.40
RBN827
1.000
1/4 x 1/4 x 1-1/2
4.12
3/16 x 3/16 x 1-1/16
0.625
0.69
1.57
0.25
N/A
RBN827
RBN827
12.12
1.10
OUTPUT
KEY
inch
mm
+ 0.000
- 0.001
+ 0.000
- 0.001
LIFTING EYE ON
R887, R897 &
R8107 ONLY
Gearcase
Output Shaft - Inches
Input Shaft* - Inches
Gearcase/Input
Helical - Inline
Triple Reduction
Dimensions
Style RBN