Harmonic Drive LLC | 247 Lynnfield St. Peabody, MA 01960 | 800-921-3332
Harmonic Drive and Harmonic Planetary are registered trademarks of Harmonic Drive LLC.


Series Size Ratio Type
CSF 65 50 2UH
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 490 Nm
Limit for Average Torque 720 Nm
Limit for Repeated Peak Torque 1,420 Nm
Limit for Momentary Peak Torque 2,830 Nm
Starting Torque 220 Ncm
Backdriving Torque 130 Nm
Ave. Input Speed 1,900 rpm
Standard Accuracy 1 arc min
Mass 20.9 kg
Torsional Stiffness
T1 235 Nm
K1 44 10^4 Nm / rad
T2 843 Nm
K2 61 10^4 Nm / rad
K3 78 10^4 Nm / rad
Output Bearing
Pitch Circle Diameter (dp) 0.16 m
Offset (R) 0.02 m
Basic Dynamic Rated Load (C) 556 10^2 N
Basic Static Rated Load (Co) 1,030 10^2 N
Allowable Moment Load (Mc) 1,860 Nm
Moment Stiffness (Km) 404 10^4 Nm / rad

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