Rotary Actuators

FLA Ultra-Flat Rotary Actuator

Ultra-flat ultra-light brushless DC actuator available with Harmonic Planetary or Harmonic Drive gear ideal for AGV wheel drives and powered exoskeletons

ModelFLA
SeriesFLA Series
Global Stock Network Custom Gear Ratios Application Engineering STO Safety Compliant
FLA product image 1
FLA
Model

FLA · 1 product image· Contact LVH for CAD files

Product Overview

The FLA series combines high-precision reducers with a compact high-output brushless DC motor in an ultra-flat ultra-light package. Available in 4 sizes 11 14 17 20 with Harmonic Planetary HP gear ratios 8-9 or Harmonic Drive FB gear ratios 50-100. 24VDC and 48VDC versions. Hall sensor position feedback. IP40 enclosure.

The FLA is a fully integrated rotary actuator combining servo motor, harmonic gear reducer, encoders, servo electronics, and compact mechanical packaging in a single assembly.

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Outer Diameter
⚖️
Weight
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Hollow Shaft
18 mm
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Max Torque
🔄
Max Speed
⚙️
Gear Ratios
🎯
Output Type
Integrated robot joint module

Rotary Actuator Architecture

Harmonic Drive rotary actuators integrate a precision strain wave gear with a brushless servo motor in a compact assembly. The hollow shaft design allows cables, pneumatic lines, or laser beams to pass directly through the axis of rotation.

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Hollow Shaft Design

Central through-bore enables cable routing through the axis of rotation in robot joint designs.

⚙️

Zero Backlash Gear

Harmonic Drive strain wave gear provides zero backlash for precise bidirectional positioning.

Brushless Servo Motor

Integrated brushless motor optimised for high cycle duty in automation applications.

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High Accuracy

Positioning accuracy better than 1 arc-min with high repeatability across the operating range.

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High Torque Density

Compact housing delivers high peak torque relative to size and mass.

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Direct Load Attachment

Output flange directly accepts loads without additional coupling or bearing hardware.

Typical Applications

The FLA suits robot joint axes, index tables, semiconductor handling, laser beam steering, and precision positioning applications requiring compact hollow shaft actuation with zero backlash.

Key Specifications

Critical performance parameters at a glance

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11, 14, 17, 20
Available Sizes
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FLA-HP Harmonic Planetary ratio 8-9 or FLA-FB Harmonic Drive ratio 50-100
Gear Options
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24VDC or 48VDC
Winding Voltage
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Hall sensor
Position Sensor
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Fully enclosed self-cooling IP40
Enclosure
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1.8Nm
FLA-11A-08-HP Maximum Torque
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500rpm
FLA-11A-08-HP Maximum Speed
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390g
FLA-11A-08-HP Weight

Technical Specifications

Overview

Available Sizes
11, 14, 17, 20
Gear Options
FLA-HP Harmonic Planetary ratio 8-9 or FLA-FB Harmonic Drive ratio 50-100
Winding Voltage
24VDC or 48VDC
Position Sensor
Hall sensor
Enclosure
Fully enclosed self-cooling IP40

FLA-HP Harmonic Planetary

FLA-11A-08-HP Maximum Torque
1.8 Nm
FLA-11A-08-HP Maximum Speed
500 rpm
FLA-11A-08-HP Weight
390 g
FLA-14A-08-HP Maximum Torque
3.7 Nm
FLA-14A-08-HP Weight
620 g
FLA-17A-09-HP Maximum Torque
7.3 Nm
FLA-17A-09-HP Weight
870 g
FLA-20A-09-HP Maximum Torque
12.1 Nm
FLA-20A-09-HP Weight
1060 g

FLA-FB Harmonic Drive

FLA-11A-50-FB Maximum Torque
6.7 Nm
FLA-11A-100-FB Maximum Torque
11 Nm
FLA-11A-FB Weight
420 g
FLA-17A-50-FB Maximum Torque
23 Nm
FLA-17A-100-FB Maximum Torque
34 Nm
FLA-17A-FB Weight
940 g
FLA-20A-50-FB Maximum Torque
33 Nm
FLA-20A-FB Weight
1170 g

Product Attributes

Product Type
Ultra-Flat Brushless DC Rotary Actuator
Shape
Ultra-flat ultra-light
Gear Options
Harmonic Planetary HP or Harmonic Drive FB
Voltage
24VDC or 48VDC
Key Applications
AGV wheel drives powered exoskeletons
Manufacturer
Harmonic Drive LLC

Industrial Applications

These rotary actuators are used in compact motion systems where motor, reducer, and actuator packaging need to be tightly integrated for reliable deployment.

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Robot Axis Actuation

Used in robot joints and compact rotary axes where packaged actuation simplifies mechanical and electrical integration.

Robot jointsCompactIntegrated
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Automation Modules

Fits automated handling, transfer, and tooling systems requiring a self-contained rotary motion solution.

AutomationHandlingRotary motion
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End-of-Arm Systems

Supports wrist, tool rotation, and other compact axes in end-of-arm and auxiliary robotic mechanisms.

EOATWrist axisCompact
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Precision Equipment

Useful in inspection, alignment, and specialist machinery where packaged rotary performance helps reduce integration effort.

InspectionAlignmentPrecision
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OEM Motion Platforms

Helps OEMs build cleaner motion platforms by reducing the number of separate drive-train components.

OEMIntegrated motionSimplified design
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Mobile & Service Robotics

Supports compact rotary motion subsystems in robots that need efficient packaging and robust mechanical integration.

Service robotsMobile systemsCompact actuation
Customization Available

Factory Modification & Custom Sourcing

This product supports custom configurations and equivalent sourcing

Available Modifications

  • Torque and speed ratio customization
  • Mounting interface modifications
  • Connector and wiring specifications
  • Housing and enclosure options

Sourcing Options

  • Standard product sourcing
  • Equivalent product identification
  • Replacement part sourcing
  • Volume pricing (MOQ may apply)

Request Pricing & Availability

Submit an RFQ for standard products, custom configurations, or equivalent alternatives

Expert Answers

Frequently Asked Questions

Technical answers sourced from engineering specifications and integration guides.

The FLA series combines a precision gear reducer with a compact brushless DC motor in an ultra-flat, ultra-light package. Available with Harmonic Planetary HP ratios 8-9 or Harmonic Drive FB ratios 50-100.

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