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

Series Size Ratio Type
FR 40 50 2-GR

• Maximum reduction ratio in minimum space
• Low backlash
• Simple installation and maintenance

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 137 Nm
Limit for Average Torque 196 Nm
Limit for Repeated Peak Torque 196 Nm
Limit for Momentary Peak Torque 353 Nm
Backdriving Torque Nm
Ave. Input Speed 2,000 rpm
Gear Backlash < 1.5 arc min
Mass 3 kg
Torsional Stiffness
T1 18 Nm
K1 6.1 10^4 Nm / rad
T2 156 Nm
K2 18 10^4 Nm / rad
K3 24 10^4 Nm / rad


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Call: 978-532-1800

Hours 8:00am - 5:00pm EST
Monday through Friday