 INTERNAL
CONSTRUCTION AND PART NAMES
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| PART NO. |
PART NAME |
| 1 |
SPLIT INPUT BORE/CLAMP |
| 2 |
FIXED DISC |
| 3 |
OLDHAM DISC |
| 4 |
ECCENTRIC DISC |
| 5 |
OUTPUT SHAFT |
| 6 |
NEMA HOUSING |
| 7 |
PRELOAD NUT/ FLANGE |
| 8 |
BALL BEARING |
| 9 |
BALL BEARING |
| 10 |
BALL BEARING |
| 11 |
BALL BEARING |
| 12 |
TAPERED ROLLER BEARING |
| 13 |
STEEL BALLS (OLDHAM) |
| 14 |
STEEL BALLS (SPEED REDUCTION) |
| 15 |
OIL SEAL |
|
TORQUE
DEFINITION
- Maximum peak torque: The allowable peak torque applied to
the output shaft when normally started from a stop or normally
stopped from a running mode.
- Maximum instantaneous torque: The allowable maximum
instantaneous torque applied to the output shaft when the load is
emergency stopped or subjected to an external impact.
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NOTE: CARE SHOULD BE TAKEN THAT THE MAXIMUM TRANSITION TORQUE
NOT BE EXCEEDED DURING NORMAL OPERATION.
SPECIFICATIONS
| |
Reduc-
tion
Ratio |
Cont. Output
Torque |
Peak Output
Torque |
Max. Inst.
Out. Torque |
Rated Input
Speed |
Standard
Backlash |
Min.
Eff. |
Input
Inertia |
Weight |
Radial
Load |
Axial
Load |
| Model / Units |
|
lb • in
(N • m) |
lb • in
(N • m) |
lb • in
(N • m) |
RPM |
arc • min |
% |
lb•in•sec² |
lbs |
lbs at
shaft end |
lbs at
shaft end |
| BRN23 |
10:1 |
70
(7.8) |
130
(14.7) |
260
(29.4) |
3000 |
ZERO |
87 |
.00032 |
2.4 |
22 |
66 |
| |
15:1 |
70
(7.8) |
130
(14.7) |
260
(29.4) |
3000 |
ZERO |
87 |
.0003 |
2.4 |
22 |
66 |
| |
20:1 |
61
(6.9) |
112
(12.7) |
226
(25.5) |
3000 |
ZERO |
86 |
.000296 |
2.4 |
22 |
66 |
| |
30,40,
50:1 |
30
(3.4) |
50
(5.6) |
95
(10.8) |
3000 |
ZERO |
85 |
.00029 |
2.4 |
22 |
66 |
| BRN34 |
10:1 |
174
(19.6) |
330
(37.3) |
650
(73.5) |
3000 |
ZERO |
94 |
.00071 |
4.4 |
66 |
132 |
| |
15:1 |
157
(17.7) |
295
(33.3) |
581
(65.7) |
3000 |
ZERO |
90 |
.00064 |
4.4 |
66 |
132 |
| |
20:1 |
139
(15.7) |
260
(29.4) |
520
(58.8) |
3000 |
ZERO |
86 |
.00062 |
4.4 |
66 |
132 |
| |
30:1 |
130
(14.7) |
243
(27.5) |
486
(54.9) |
3000 |
ZERO |
80 |
.0006 |
4.4 |
66 |
132 |
| |
40,50:1 |
45
(5.0) |
80
(9.0) |
165
(18.5) |
3000 |
ZERO |
76 |
.00058 |
4.4 |
66 |
132 |
| BRN42 |
10:1 |
304
(34.3) |
520
(58.8) |
1042
(117.7) |
3000 |
ZERO |
88 |
.002 |
9.9 |
110 |
221 |
| |
15:1 |
287
(32.4) |
486
(54.9) |
964
(108.9) |
3000 |
ZERO |
83 |
.0019 |
9.9 |
110 |
221 |
| |
20:1 |
278
(31.4) |
469
(53.0) |
937
(105.9) |
3000 |
ZERO |
81 |
.00173 |
9.9 |
110 |
221 |
| |
30:1 |
217
(24.5) |
373
(42.2) |
738
(83.4) |
3000 |
ZERO |
79 |
.00167 |
9.9 |
110 |
221 |
| |
40:1 |
217
(24.5) |
373
(42.2) |
738
(83.4) |
3000 |
ZERO |
67 |
.00166 |
9.9 |
110 |
221 |
| |
50:1 |
100
(11.3) |
165
(18.5) |
330
(37.5) |
3000 |
ZERO |
67 |
.00166 |
9.9 |
110 |
221 |
NOTE: ALL SPECIFICATIONS ARE IN ENGLISH UNITS UNLESS OTHERWISE
NOTED. CALL FOR RATIOS NOT LISTED PER MODEL.
BRN
DIMENSIONS
| |
Square
Flange |
Output
Bolt Hole
Diameter |
Bolt
Circle
Diameter |
Ouput
Pilot
Diameter |
Output
Shaft
Diameter |
Output
Shaft
Length |
Ouput
Pilot
Thickness |
Mouting
Flange
Thickness |
Housing
Diameter |
Input
Pilot
Diameter |
Input
Pilot
Depth |
| MODEL |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
| BRN23 |
2.270 |
0.200
Thru |
2.63 |
1.500
1.499 |
0.375 |
1.00 |
0.063 |
0.197 |
3.070 |
1.503
1.502 |
0.197
0.157 |
| BRN34 |
3.250 |
0.217
Thru |
3.875 |
2.875
2.874 |
0.500 |
1.250 |
0.063 |
0.394 |
4.440 |
2.879
2.877 |
0.197
0.157 |
| BRN42 |
4.200 |
0.280
Thru |
4.95 |
2.187
2.186 |
0.625 |
1.500 |
0.094 |
0.500 |
5.630 |
2.191
2.189 |
0.197 |
| |
Housing
Length |
Shaft To
Shoulder |
Keyway
Length |
Keyway
Depth |
Keyway
Width |
Input
Shaft Bore
Depth |
Input
Shaft Bore
Diameter |
Input
Bolt Hole
Diameter |
Input
Flange
Thickness |
Shoulder
Height |
| MODEL |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
| BRN23 |
2.930 |
0.866 |
Flat
0.750 |
Flat
0.015 |
X |
0.945 |
.2506
.2500 |
10-24
UNC |
0.315 |
0.079 |
| BRN34 |
3.20 |
1.110 |
0.752 |
0.071 |
0.125 |
1.232 |
.3756
.3750 |
10-24
UNC |
0.472 |
0.079 |
| BRN42 |
4.260 |
1.33 |
1.142 |
0.110 |
0.188 |
1.122 |
.6254
.6250 |
¼-20
UNC |
0.500 |
0.079 |
NOTE: ALL DIMENSIONS ARE IN INCHES.
COMPRESSION
INPUT COUPLING
(Simply mount
moter and tighten)
- Clamp torque:
BRN23 35
lb•in
BRN34 65
lb•in
BRN42 65
lb•in
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MODEL
SELECTION
BRN [(23, 34, 42), (RATIO)] Example:
BRN23-10 is defined as a NEMA 23 Ball Reducer with 10:1 ratio.
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