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Quality SYT-RI-100-120 factory
Quality SYT-RI-100-120 factory
Quality SYT-RI-100-120 factory

SYT-RI-100-120

Basic Properties
Place of Origin: CHINA
Brand Name: SENINTER
Certification: CE ROHS
Model Number: SYT-RI-80-110 CAN
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: 120mm
Length: 100.5mm
Max. Torque: 459N·m
Max. Speed: 55RPM
Voltage: 24-48VDC
Weight: 2.52kg
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.

Customization Services:Waterproof and anti-corrosion customization available for deep-sea operation, with an IP68 protection rating.

 SYT-RI-100-120

Drawing without brake

SYT-RI-100-120







  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 267 376 411 436 459
Max Allowable Torque At Average Load (Robot Application) N·m 133 206 267 267 267
Rated Torque @ 2000RPM (Industrial Application) N·m 94 146 169 169 169
Peak Output Speed RPM 55 37 29 24 18
Rated Speed (With 1/2 Rated Torque) RPM 44 29 22 18 12
Gear Backlash arcsec 20 20 10 10 10
Rated Power W 1000 1000 1000 1000 1000
Supply Voltage V 24–48 24–48 24–48 24–48 24–48
Max Continuous Current A 20.2 20.2 20.2 20.2 20.2
Rated Current A 15.8 15.8 15.8 15.8 15.8
Torque Constant N·m/A 0.175 0.175 0.175 0.175 0.175
Encoder Resolution bit 16 16 16 16 16
Communication Bus - CAN CAN CAN CAN CAN
Hollow Shaft Diameter mm 32 32 32 32 32
Total Length mm 100.5±0.5 100.5±0.5 100.5±0.5 100.5±0.5 100.5±0.5
Mass kg 2.52 2.52 2.52 2.52 2.52
Rotational Inertia g·cm² 3910.2 3910.2 3910.2 3910.2 3910.2


Drawing with brake



SYT-RI-100-120


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 267 376 411 436 459
Max Allowable Torque At Average Load (Robot Application) N·m 133 206 267 267 267
Rated Torque @ 2000RPM (Industrial Application) N·m 94 146 169 169 169
Peak Output Speed RPM 55 37 29 24 18
Rated Speed (With 1/2 Rated Torque) RPM 44 29 22 18 12
Gear Backlash arcsec 20 20 10 10 10
Rated Power W 1000 1000 1000 1000 1000
Supply Voltage V 24–48 24–48 24–48 24–48 24–48
Max Continuous Current A 20.2 20.2 20.2 20.2 20.2
Rated Current A 15.8 15.8 15.8 15.8 15.8
Torque Constant N·m/A 0.175 0.175 0.175 0.175 0.175
Encoder Resolution bit 16 16 16 16 16
Communication Bus - CAN CAN CAN CAN CAN
Hollow Shaft Diameter mm 32 32 32 32 32
Total Length mm 121.5±0.5 121.5±0.5 121.5±0.5 121.5±0.5 121.5±0.5
Mass kg 3.21 3.21 3.21 3.21 3.21
Rotational Inertia g·cm² 4744.7 4744.7 4744.7 4744.7 4744.7


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