CbN Series 2000/3000 Speed Reducer - Browning - #11

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Text version of the page
Speed Reducers
CbN
SERIES
2000 3000
GEARMOTORS I
Overhung Load Capacities
When a sprocket, sheave, pulley or pinion is mounted on any shaft of a reducer, it is necessary to calculate the overhung load. This calculated load must be compared with the gearbox capacity listed to make sure the gearbox will not be over­loaded. To calculate the overhung load you need to know the torque or horsepower at the take-off shaft and the location along the shaft at which the load is applied.
Where:
OHL _ Overhung load (pounds)
T _ Torque (in. lbs.)
r _ Radius of driving member (in.)
HP _ Horsepower
K _ Drive type factor
LLF _ Load location factor
A. If torque is known:
OHL =-
DRIVING MEMBER
VALUE OF K
Chain Drive
1.00
Pinion
1.25
Timing Belt
1.25
V-Belt
1.50
Flat Belt
2.50
T x K x LLF
r
B. If horsepower is known:
OHL _ 63025 x HP x K x LLF RPM x r
OHL capacities are calculated at gear capacity rounded to the closest motor HP at mid shaft. For capacity when HP is known, refer to gearmotor selection tables.
LOAD LOCATION
VALUE OF LLF
End of shaft extension Center of shaft extension Shaft extension shoulder
1.20 1.00 0.80
Single Reduction Overhung Load (lbs.)
Output R.P.M.
REDUCER SIZE
0
1
2
3
4
5
30
31
32
33
34
35
>1000
84
222
230
500
580
802
801-1000
80
229
250
600
615
757
551-800
75
240
288
648
674
1041
451-550
54
320
360
668
874
1234
351-450
33
334
370
806
1244
1495
<350
153
366
457
786
1560
1744
Multiple Reduction Overhung Load (lbs.)
Output R.P.M.
REDUCER SIZE
0
1
2
3
4
5
6
7
8
9
3012
3122
313X
3242
325X
336X
337X
34
35
26
27
28
29
301-450
-
455
-
460
-
890
-
1755
1983
4200
6500
-
-
201-300
-
469
-
557
-
1200
-
1829
2065
4400
7000
9000
-
151-200
129
591
619
670
699
1233
1233
2013
2065
4670
7500
12000
-
101-150
138
603
649
685
692
1296
1296
2015
2163
4900
7500
12000
-
51-100
388
701
714
850
856
1305
1305
2472
2213
5800
9000
12000
14000
31-50
600
-
1030
-
1105
-
1305
3424
3733
6000
11000
12000
20000
16-30
600
-
1297
-
1357
-
1905
3670
4580
6000
11000
12000
20000
<15
600
-
1345
-
1610
-
1905
4340
4580
6000
11000
12000
20000
I___I___I_I_----_I_I_----_I_I_----_I__I__I_----_I_---- ■_----Minimum OHL capacity based on minimum recommended sheave diameter and unit driven by maximum motor HP.
237

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