Harmonic Drive Frameless Torque Motor Precision Encoder Rotary Actuator

●  Introduction

The HAS Solid Standard Harmonic Rotary Actuator integrates a frameless torque motor, multi-turn absolute encoder, and harmonic drive. It supports five harmonic drive models: 11, 14, 17, 20, and 25, with rated torque from 4 N·m to 133 N·m and outer diameters ranging from 62 mm to 110 mm.
It features a multi-turn absolute encoder with Tamagawa protocol: single-turn 23-bit, multi-turn 16-bit. The actuator can be directly mounted via the end face, making it ideal for lightweight or space-constrained applications.
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Features

Lightweight Design

The modular design highly integrates the harmonic drive, frameless motor, and encoder.

Volume can be reduced by 30–50%

Weight can be reduced by 20–40%


High Torque Density
The transmission structure minimizes energy loss, efficiently converting motor power into mechanical output at the shaft.


● High Precision
Based on harmonic drive principles, the flexspline and circular spline engage over multiple teeth with minimal backlash. Coupled with a high-precision encoder, it enables accurate position and motion control.


Rigidity and Shock Resistance
The solid shaft has uniform material distribution, providing excellent torsional and impact resistance. It maintains minimal deformation under high-frequency reciprocating loads or sudden shocks, ensuring stable
 transmission.


Compact Structure
The simplified design eliminates redundant flanges, reducing size and weight while maintaining structural integrity.

Specification

Sheet 1

Product Parameters(AC-220V)
Model
HAS11HAS14HAS17HAS20HAS25
Reduction Ratio/511015181101518110112151811011211615181101121161
Rated TorqueN·M488.613.513.527334949304858616168.5107133133133
Peak TorqueN·M8.311232934435366666991102108113121169194207217
Rated SpeedRPM69355937305937302559373025194931252116
Max SpeedRPM102511187459118745950118745950379459484030
Rated CurrentA0.980.990.780.770.622.361.822.171.812.632.652.562.251.693.903.843.833.202.40
Max CurrentA2.031.362.091.661.563.682.922.922.446.045.024.513.983.136.906.075.584.973.92
Torque ConstantN·M/Arms4.088.0811.0217.5021.8211.4218.1422.6227.1011.4218.1422.6227.1036.0617.5427.8634.7441.6255.38
Unidirectional Positioning AccuracyArcsec≤90≤90≤70≤60≤60≤60≤60≤50≤50≤60≤60≤60≤50≤50≤60≤50≤50≤40≤40
Repeat Positioning AccuracyArcsec≤20≤20≤15≤10≤10≤15≤10≤10≤10≤10≤10≤10≤10≤10≤10≤10≤10≤10≤10
Tilt StiffnessX104N.m/rad48152438
Torsional StiffnessX104N.m/rad0.30.340.460.61.071.31.82.33.44.6
Motor Phase ResistanceOhma(20°C)127.52.62.63.55
Motor Phase InductanceMh9.511.56.76.710
Back-EMF ConstantVrms/Krpm10.525252540
Rotor InertiaWithout brake KG*m28.32*10^-63.6*10^-57.96*10^-58.8*10^-52.1*10^-4
Rotor InertiaWith brake KG*m28.73*10^-63.7*10^-59.12*10^-59.17*10^-52.2*10^-4
Mass (Without Brake)Kg1.171.662.22.43.6
Mass (With Brake)Kg1.3622.82.964.2
Motor PolesPole1016161616
Diameter & Length (With/Without Brake)mm63mmX83mm
63mmx99.7mm
ø74mmX91.5mm
ø74mmX109.5mm
ø88mmX98mm
ø88mmX122mm
ø88mmX101mm
ø88mmX125mm
ø110mmX109mm
ø110mmX130.5mm
Hollow Shaft Diametermmø10mmø9mmø13.5mmø16.5mmø17mm
NotesFor reference only, please contact sales for actual parameters