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Quality SYT-RI-80-110 factory
Quality SYT-RI-80-110 factory
Quality SYT-RI-80-110 factory
Quality SYT-RI-80-110 factory

SYT-RI-80-110

Basic Properties
Place of Origin: CHINA
Brand Name: SENINTER
Certification: CE ROHS
Model Number: SYT-RI-80-110
Product Summary
Humanoid Robot Joint Module (Rotary Actuator) Structure – Core Components Output Flange / Connector – Connects to robot links (e.g., lower leg, forearm), outputs torque and motion. Torque Sensor (optional but common in high-performance designs) – Ring or spoke type, used for force control / ...

Product Details

OD: 110mm
Length: 85.5mm
Max. Speed: 65RPM
Max. Torque: 217N·m
Voltage: 24-48VDC
Weight: 1.5kg
Protocol: CAN/EtherCAT
Product Description

Humanoid Robot Joint Module (Rotary Actuator) Structure – Core Components 

Output Flange / Connector – Connects to robot links (e.g., lower leg, forearm), outputs torque and motion.

Torque Sensor (optional but common in high-performance designs) – Ring or spoke type, used for force control / collision detection.

Harmonic Drive – Consists of a wave generator, flexspline, and circular spline; mounted on the motor output shaft.

Frameless Torque Motor – Stator fixed to the housing, rotor connected to the wave generator.

Brake (Safety Holding Brake) – Locks the joint position when power is lost.

Dual Encoders – Motor-side encoder (measures speed/position) and output-side encoder (eliminates reducer backlash error); commonly used for full closed-loop control.

Driver (Servo Drive Board) – Integrated inside the module or in a compact package.

Housing / Cooling Structure – Aluminum alloy body with cable channels.

 SYT-RI-80-110

Drawing without brake

SYT-RI-80-110







  without brake Parameter Table

Parameter Unit Ratio 51 Ratio 81 Ratio 101 Ratio 121 Ratio 161
Gear Ratio - 51 81 101 121 161
Peak Torque N·m 121 169 194 207 217
Max Allowable Torque At Average Load (Robot Application) N·m 68.5 107 133 133 133
Rated Torque @ 2000RPM (Industrial Application) N·m 48 78 84 84 84
Peak Output Speed RPM 65 43 36 30 22
Rated Speed (With 1/2 Rated Torque) RPM 54 35 27 23 17
Gear Backlash arcsec 20 20 10 10 10
Rated Power W 750 750 750 750 750
Supply Voltage V 24–48 24–48 24–48 24–48 24–48
Max Continuous Current A 10.4 10.4 10.4 10.4 10.4
Rated Current A 9 9 9 9 9
Torque Constant N·m/A 0.143 0.143 0.143 0.143 0.143
Encoder Resolution bit 16 16 16 16 16
Communication Bus - CAN CAN CAN CAN CAN
Hollow Shaft Diameter mm 27 27 27 27 27
Total Length mm 85.5±0.5 85.5±0.5 85.5±0.5 85.5±0.5 85.5±0.5
Mass kg 2.06 2.06 2.06 2.06 2.06
Rotational Inertia g·cm² 1477.6 1477.6 1477.6 1477.6 1477.6

Drawing with brake



SYT-RI-80-110


With  brake Parameter Table


Parameter Unit Ratio 51 Ratio 81 Ratio 101 Ratio 121 Ratio 161
Gear Ratio - 51 81 101 121 161
Peak Torque N·m 121 169 194 207 217
Max Allowable Torque At Average Load (Robot Application) N·m 68.5 107 133 133 133
Rated Torque @ 2000RPM (Industrial Application) N·m 48 78 84 84 84
Peak Output Speed RPM 65 43 36 30 22
Rated Speed (With 1/2 Rated Torque) RPM 54 35 27 23 17
Gear Backlash arcsec 20 20 10 10 10
Rated Power W 750 750 750 750 750
Supply Voltage V 24–48 24–48 24–48 24–48 24–48
Max Continuous Current A 10.4 10.4 10.4 10.4 10.4
Rated Current A 9 9 9 9 9
Torque Constant N·m/A 0.143 0.143 0.143 0.143 0.143
Encoder Resolution bit 16 16 16 16 16
Communication Bus - CAN CAN CAN CAN CAN
Hollow Shaft Diameter mm 27 27 27 27 27
Total Length mm 105.5±0.5 105.5±0.5 105.5±0.5 105.5±0.5 105.5±0.5
Mass kg 2.26 2.26 2.26 2.26 2.26
Rotational Inertia g·cm² 1761.1 1761.1 1761.1 1761.1 1761.1


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