Helical-bevel overhung load calculation tables, Caution – NORD Drivesystems B1000 User Manual
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A55
G1000 – Subject to Change Without Notice
INTRODUCTION
Helical-Bevel Overhung Load
Calculation Tables
Calculation Table for OHL at Output Shaft for Bevel Units
Gearbox
Type
y
z
c
c
f
U
V
T
2max
Standard
Bearings
VL
Bearings
[in]
[in]
[lb-in]
[lb-in]
[in]
[in]
[in]
[lb-in]
SK 92072
3.74
4.53
531
–
0
0.750
1.50
797
SK 92172
4.37
5.16
443
–
0
0.750
1.50
1,062
SK 92372
5.04
6.02
708
–
0
1.000
2.13
2,036
SK 92672
5.35
6.54
1,062
–
0
1.000
2.75
3,363
SK 92772
6.02
7.32
1,416
–
0
1.375
3.00
5,841
SK 9012.1
4.37
5.55
1,239
2,124
0
1.250
2.36
3,540
SK 9013.1
SK 9016.1
4.37
5.75
2,213
3,629
0
1.250
2.76
5,399
SK 9017.1
SK 9022.1
5.67
7.05
1,505
2,655
0
1.375
2.76
7,611
SK 9023.1
SK 9032.1
6.75
8.52
2,567
5,133
0
1.750
3.54
13,718
SK 9033.1
SK 9042.1
7.13
9.49
10,797
17,162
0
2.375
4.72
24,780
SK 9043.1
SK 9052.1
9.33
12.09
15,488
27,258
0
2.875
5.51
42,480
SK 9053.1
SK 9072.1
11.06
14.41
39,737
62,393
0
3.625
6.69
75,225
SK 9082.1
12.86
17.00
73,986
113,457
0
4.375
8.27
115,050
SK 9086.1
16.61
20.75
84,606
138,060
0
4.750
8.27
177,000
SK 9092.1
20.28
25.20
127,440
217,799
0
5.500
9.84
283,200
SK 9096.1
21.65
27.95
431,239
–
0
5.500
12.60
442,500
R
R
CAUTION
When gear units are fl ange mounted opposite shaft, their OHL capacity is greatly
reduced compared to the standard catalog ratings. Please consult NORD for
details on OHL ratings.
F
OHL
= Calculated OHL on gearbox shaft [lb]
T = Load torque on shaft [lb-in]
d
0
= Pitch diameter of overhung component [in]
f
z
= Power transmission component factor
F
OHL
=
2 x T x f
z
After calculating
F
OHL
compare to the
overhung load capacity found in the tables.
F
OHL
≤ F
R
or F
R1
If
F
OHL
exceeds the rated capacity (F
R
or F
R1
) of the
speed reducer then either heavy-duty bearings
or a larger gearbox must be selected.
d
o