Planetary Gear Drive

B Reducer ■
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■Reducer Selection Example
Conditions and final selections ○:Conditions ■:Selected item Reference page No.
○ Ambient Condition :indoor, Ambient temperature 25℃ B-2:Standard Specification
■ Check ambient condition
→OK
○ Motor power
:22kW(Code:30)
○ High speed shaft speed
:1500r/min
○ Shaft and mounting positions :Right Angle Shaft, Horizontal Mounting
Load condition
○ Type of load, operating hours, usage :Uniform load: 14 hours/day, conveyor
■ Determine Service Factor →SF=1.25 B-8:Service Factor
■ Calculate equivalent transmission power →P E =22×1.25=27.5kW
○ Low speed shaft speed
:20r/min
■ Reduction ratio
→1500/20=75
Select nominal reduction ratio →75→71 B-4~B-5:Nomenclature
■ Determine size
■ Determine reducer size, type,
reduction ratio
→ Size 1090 Nominal reduction ratio
71
Mechanical power rating P N =34.2kW
P E ≦ P N → OK
B-16:Selection Tables
■ Check dimension
B-32 *1 :Dimension Tables
■ Check nomenclature →DHG-1090-71 Code in Dimension Tables
○ Ambient Temperature :20℃
■ Temperature correction factor K1 →K1=1.0 B-9:Selection Tables
■ Temperature correction factor K2 →K2=1.0 B-9:Selection Tables
■ Thermal power rating P T →P T =32.0kW B-14:Selection Tables
→P T ×K1×K2=32.0>22=P M →OK
Check overhang load
○ Overhang member
:Sprocket (Single row)
■ Overhang factor K3 →K3=1.0 B-28:Allowable Radial Load
○ Radial load position
:Center of shaft
○ Radial load Fr
:60kN
■ Equivalent radial load F rE →F rE =60×1.25×1.0=75kN
■ Allowable radial load →100kN B-28:Allowable Radial Load
75
100
= 0.75 < 1 →OK
○ Completion of selection
■ Model selected
→DHG-1090-71
*1 page number of the relevant Dimension Table
is indicated in the Selection Table.
B―7