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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
E
OA
J
A
OUTPUT
SHAFT
H
DIA HOLES
UY
Dimensions subject to change without notice
Q
C
B
F
U
BA
M
TAP
VO
V
AD
FZ
FO INPUT
KEY
FU
FM
TAP
INPUT
SHAFT
D
G
BC
FV
RBN847
RBN837
RBN827
Model
13.89
11.63
11.26
3/16 x 3/16 x 2
3/16 x 3/16 x 1-1/16
3/16 x 3/16 x 1-1/16
0.875
0.75
RBN827
RBN847
RBN837
Size
FU
0.95
0.95
FZ
1.88
2.25
2.25
FV
N/A
0.25
FO
KEY
N/A
1/4-20 x 0.75
FM
BC
C
3.87
3.56
3.45
RBN887
RBN877
RBN867
RBN857
21.57
17.64
14.93
13.89
5/16 x 5/16 x 2-3/8
1/4 x 1/4 x 2-1/2
1.375
1.125
RBN867
RBN887
RBN877
RBN857
1.23
1.51
2.63
3.15
0.35
N/A
3/8-16 x 1.00
1/2-18 x 1.41
3.31
5.04
5.82
3.45
K
X
A
Size
RBN867
RBN857
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
8.47
6.69
11.42
9.84
RBN897
RBN8107
RBN887
RBN877
341
387
15.25
13.42
288
11.34
288
8.66
140
5.51
140
4.53
160
185
7.28
6.30
12.59
17.32
14.37
16.08
14.00
356
408
11.96
9.97
304
304
365
440
320
320
9.65
9.84
250
8.86
225
7.09
180
180
5.51
250
290
215
170
16.78
15.84
13.04
10.47
12.21
14.57
310
370
10.24
260
205
8.07
35
1.38
38
1.50
25
28
1.11
0.98
55
2.16
74
2.93
90
4.00
102
3.55
23
26
1.02
0.91
19
0.75
18
0.69
402
426
331
266
19.00
16.41
417
483
10.79
12.99
330
274
1/2-13 x 1.13
1/2-13 x 1.13
M
1.51
1.51
1.10
UY
2.76
N/A
N/A
V
KEY
U
VO
0.44
0.44
0.40
Size
RBN857
RBN867
RBN827
1.000
1.375
1.375
1/4 x 1/4 x 1-1/2
5/16 x 5/16 x 1-3/4
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
N/A
6
0.24
N/A
K
N/A
N/A
N/A
N/A
11
0.35
9
0.40
X
2.83
2.94
5.62
3.27
4.06
4.95
RBN847
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
N/A
N/A
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
0.29
7
RBN827
3/8-24 x 0.91
3/8-24 x 0.088
1/4 x 1/4 x 1-1/2
1.10
1.36
2.36
0.41
0.40
RBN847
RBN837
1.250
1.000
1/4 x 1/4 x 1-11/16
2.43
2.12
2.12
N/A
3/8-24 x 0.91
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
0.29
7
RBN8107
RBN897
27.92
25.33
1/2 x 1/2 x 3-1/4
1/2 x 1/2 x 3-1/4
1.875
1.875
RBN8107
RBN897
2.08
2.08
3.75
3.75
N/A
N/A
5/8-18 x 1.50
5/8-18 x 1.50
6.82
6.07
0.625
0.69
0.60
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 2
0.875
0.95
2.25
N/A
1/4-20 x 0.75
N/A
inch
mm
OUTPUT
KEY
* See Page 444 For Additional Shaft Diameters Available.
+ 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
Double Reduction
Dimensions
Style RBN