Harmonic Drive LLC | 42 Dunham Ridge, Beverly, MA 01915 | 800-921-3332
Harmonic Drive and Harmonic Planetary are registered trademarks of Harmonic Drive LLC.

Series Size Ratio Type Option
CSF 20 30 2UH LW
Gear Model Number
Gear Dimensions (see drawing)
Flange Dim A - Motor Adapter Flange Bore Dia. {{foundMotor.flangeDimA}} mm
Flange Dim B - Motor Adapter Flange Bore Depth {{foundMotor.flangeDimB}} mm
Motor Dim C - Motor Bolt Circle Dia. {{foundMotor.dimC}} mm
Flange Dim D - Bolt Size {{foundMotor.flangeDimD}}
Coupling Dim F - Motor Coupling Bore Dia. {{foundMotor.couplingDimF}} mm
Mass kg
Gear Performance Data
Rated Torque L10 15 Nm
Limit for Average Torque 20 Nm
Limit for Repeated Peak Torque 27 Nm
Limit for Momentary Peak Torque 50 Nm
Starting Torque 15 Ncm
Backdriving Torque 6.2 Nm
Ave. Input Speed 3,500 rpm
Standard Accuracy 1.5 arc min
Mass 0.64 kg
Torsional Stiffness
T1 7 Nm
K1 0.57 10^4 Nm / rad
T2 25 Nm
K2 0.71 10^4 Nm / rad
K3 1.1 10^4 Nm / rad
Output Bearing
Pitch Circle Diameter (dp) 0.05 m
Basic Dynamic Rated Load (C) 57.8 10^2 N
Basic Static Rated Load (Co) 90 10^2 N
Allowable Moment Load (Mc) 74.6 Nm
Moment Stiffness (Km) 10.5 10^4 Nm / rad


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