Shenzhen Seninter Precision Machinery Co.,Ltd.
                                                                                                           
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9 Years
Since 2017
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SYT-RI60-70

Price Negotiable
Price: Negotiable
MOQ: Negotiable
Delivery Time: Negotiable
Brand: SENINTER
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.

Drawing without brake







  without brake Parameter Table

Parameter Unit Ratio 51 Ratio 81 Ratio 101 Ratio 121
Gear Ratio - 51 81 101 121
Peak Torque N·m 42 53 66 66
Max Allowable Torque At Average Load (Robot Application) N·m 32 33 49 49
Rated Torque @ 2000RPM (Industrial Application) N·m 19.8 27.5 30 30
Peak Output Speed RPM 82 51 41 32
Rated Speed (With 1/2 Rated Torque) RPM 68 43 34 24
Gear Backlash arcsec 20 20 10 10
Rated Power W 300 300 300 300
Supply Voltage V 24–48 24–48 24–48 24–48
Max Continuous Current A 6.7 6.7 6.7 6.7
Rated Current A 5 5 5 5
Torque Constant N·m/A 0.096 0.096 0.096 0.096
Encoder Resolution bit 16 16 16 16
Communication Bus - CAN CAN CAN CAN
Hollow Shaft Diameter mm 18 18 18 18
Total Length mm 72.5±0.5 72.5±0.5 72.5±0.5 72.5±0.5
Mass kg 0.73 0.73 0.73 0.73
Rotational Inertia g·cm² 394.8 394.8 394.8 394.8

Drawing with brake




With  brake Parameter Table


Parameter Unit Ratio 51 Ratio 81 Ratio 101 Ratio 121
Gear Ratio - 51 81 101 121
Peak Torque N·m 42 53 66 66
Max Allowable Torque At Average Load (Robot Application) N·m 32 33 49 49
Rated Torque @ 2000RPM (Industrial Application) N·m 19.8 27.5 30 30
Peak Output Speed RPM 82 51 41 32
Rated Speed (With 1/2 Rated Torque) RPM 68 43 34 24
Gear Backlash arcsec 20 20 10 10
Rated Power W 300 300 300 300
Supply Voltage V 24–48 24–48 24–48 24–48
Max Continuous Current A 6.7 6.7 6.7 6.7
Rated Current A 5 5 5 5
Torque Constant N·m/A 0.096 0.096 0.096 0.096
Encoder Resolution bit 16 16 16 16
Communication Bus - CAN CAN CAN CAN
Hollow Shaft Diameter mm 18 18 18 18
Total Length mm 93±0.5 93±0.5 93±0.5 93±0.5
Mass kg 0.88 0.88 0.88 0.88
Rotational Inertia g·cm² 492 492 492 492


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Company Shenzhen Seninter Precision Machinery Co.,Ltd.
Location Shenzhen, Guangdong, P.R.China
Contact Person Tony-yin

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