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Chapter 2: Specifications
Page 2–3
IronHorse® Helical Gearbox User Manual – 1st Ed. Rev. B
IronHorse® Cast-Iron Helical Gearbox Specifications
IronHorse Cast-Iron Helical Gearbox Specifications – Box Size 37
Part Number
Nominal Ratio
Actual Ratio
Output RPM @ 1750 rpm Input
Nominal HP @ 1.0 Ser
vic
e
Fact
or
1
NEMA Mot
or F
rame
Output Shaft Diame
ter (in)
Input P
ower (hp)
Output T
orque (lb·in)
OHL (lb
s)
2
Ef
ficiency (%)
St
ages
Appro
x W
eigh
t (lb)
HGR-37-005-A
5:1
4.88
359
1.0
56C
1
5.91
970
305
93.4
2
32
HGR-37-005-B
2.0
145TC
HGR-37-010-A
10:1
10.02
175
1.0
56C
4.04
1360
388
93.3
HGR-37-010-B
2.0
145TC
HGR-37-015-A
15:1
15.75
111
1.0
56C
2.99
1580
451
93.2
HGR-37-015-B
2.0
145TC
HGR-37-020-A
20:1
19.95
88
1.0
56C
2.49
1670
489
93.3
HGR-37-020-B
2.0
145TC
HGR-37-030-A
30:1
31.02
56
1.5
56C
1.75
1770
565
90.5
3
HGR-37-030-B
2.0
145TC
HGR-37-040-A
40:1
40.08
44
1.0
56C
1.35
1770
615
90.8
HGR-37-060-A
60:1
60.84
29
1.0
56C
0.89
1770
705
90.8
1) Nominal Motor HP is the highest HP 1800 rpm motor to be used with the gearbox under conditions of 1.0 service factor.
Gearbox input power capacity decreases as motor speed decreases and as service factor increases.
2) OHL= Overhung Load ratings are for forces perpendicular to the output shaft and located at the shaft midpoint, such as
from a gear, pulley, or sprocket with a belt or chain. Divide OHL ratings by the applicable OHL K factors shown separately
in the Selection Factors tables. OHL ratings should also be divided by applicable service factors.
3) Maximum Mechanical Ratings are limits based on strength and durability of gearbox components; applicable when
operating time is short and stopped time is greater than or equal to operating time. These ratings are applicable for 1.0
service factor loads, and may require modification depending upon characteristics of the applicable driven loads. Refer to
the “Service Factors” table for more information.
Содержание IronHorse HGR-37-005-A
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