SB--7--622 Page 5
FIGURE 2 -- BELT DRIVE OVERHUNG LOAD CALCULATIONS
Dimensions
Maximum
Gear
(Inches)
Allowable
Diameter
Moment
(Inches)
A
B
C
(LB--IN)
(Max)
6
4.08
1.14
.38
1788
7
4.50
1.31
.38
3000
8
5.57
1.77
.38
4144
Z
Ac
Z
Ac
Z
Ac
Z
Ac
Z
Ac
Z
Ac
0.000 1.000
0.250 0.966
0.500 0.926
0.750 0.879
1.000 0.823
1.250 0.751
0.025 0.997
0.275 0.962
0.525 0.922
0.775 0.874
1.025 0.816
1.275 0.742
0.050 0.994
0.300 0.958
0.550 0.917
0.800 0.869
1.050 0.810
1.300 0.734
0.075 0.990
0.325 0.954
0.575 0.913
0.825 0.864
1.075 0.803
1.325 0.725
0.100 0.987
0.350 0.951
0.600 0.908
0.850 0.858
1.100 0.796
1.350 0.716
0.125 0.983
0.375 0.947
0.625 0.904
0.875 0.852
1.125 0.789
1.375 0.706
0.150 0.980
0.400 0.943
0.650 0.899
0.900 0.847
1.150 0.782
1.400 0.697
0.175 0.977
0.425 0.939
0.675 0.894
0.925 0.841
1.175 0.774
1.425 0.687
0.200 0.973
0.450 0.935
0.700 0.889
0.950 0.835
1.200 0.767
0.225 0.969
0.475 0.930
0.725 0.884
0.975 0.829
1.225 0.759
2.5 -- Ac
125954 x Hp x S.F.
Ac
D x RPM
Key:
Ac
=
Arc of Contact Factor (Refer to Arc of Contact Factors Chart above)
Hp
=
Blower Horsepower for Operating Conditions
S.F.
=
Actual Drive Service Factor
D
=
Blower Sheave Pitch Diameter in Inches
RPM =
Blower Sheave Speed
Z
=
Large Sheave Pitch Diameter (in) -- Small Sheave Pitch Diameter (in)
Sheave Center Distance (in)
[
] [
]
Belt Pull
=
Shaft Moment (LB--IN) = Belt Pull x
B + C +
[
(
)
]
Sheave Width
2
CALCULATION OF BELT PULL
CALCULATION OF SHAFT MOMENT
DRIVE SHAFT ILLUSTRATION
MAXIMUM ALLOWABLE MOMENT
ARC OF CONTACT FACTORS
[
]
Summary of Contents for TANVAC HDV3000
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Page 216: ...SB 7 632 Page 55 300GAE810 A Ref Drawing ...
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Page 262: ...SB 7 622 Page 29 300GAH810 A Ref Drawing ...
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