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Shenzhen Seninter Precision Machinery Co.,Ltd.

  • China,Shenzhen ,Guangdong
  • Verified Supplier
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China SYT-RI-70-90
China SYT-RI-70-90

  1. China SYT-RI-70-90

SYT-RI-70-90

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Protocol EtherCAT / CAN
OD 90mm
Length 73mm
Voltage 24-48VDC
Max. Torque 108N·m
Weight 1.27kg
Max. Speed 77RPM
Brand Name SENINTER
Model Number SYT-RI-70-90 CAN
Place of Origin CHINA
Certification CE ROHS

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  1. Product Details
  2. Company Details

Product Specification

Protocol EtherCAT / CAN OD 90mm
Length 73mm Voltage 24-48VDC
Max. Torque 108N·m Weight 1.27kg
Max. Speed 77RPM Brand Name SENINTER
Model Number SYT-RI-70-90 CAN Place of Origin CHINA
Certification CE ROHS

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 69 91 102 108
Max Allowable Torque At Average Load (Robot Application) N·m 42 58 61 61
Rated Torque @ 2000RPM (Industrial Application) N·m 32 42 50 50
Peak Output Speed RPM 77 48 40 30
Rated Speed (With 1/2 Rated Torque) RPM 61 38 30 25
Gear Backlash arcsec 20 20 10 10
Rated Power W 500 500 500 500
Supply Voltage V 24–48 24–48 24–48 24–48
Max Continuous Current A 8.4 8.4 8.4 8.4
Rated Current A 6.1 6.1 6.1 6.1
Torque Constant N·m/A 0.118 0.118 0.118 0.118
Encoder Resolution bit 16 16 16 16
Communication Bus - CAN CAN CAN CAN
Hollow Shaft Diameter mm 18 18 18 18
Total Length mm 73.5±0.5 73.5±0.5 73.5±0.5 73.5±0.5
Mass kg 1.27 1.27 1.27 1.27
Rotational Inertia g·cm² 596.4 596.4 596.4 596.4

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 69 91 102 108
Max Allowable Torque At Average Load (Robot Application) N·m 42 58 61 61
Rated Torque @ 2000RPM (Industrial Application) N·m 32 42 50 50
Peak Output Speed RPM 77 48 40 30
Rated Speed (With 1/2 Rated Torque) RPM 61 38 30 25
Gear Backlash arcsec 20 20 10 10
Rated Power W 500 500 500 500
Supply Voltage V 24–48 24–48 24–48 24–48
Max Continuous Current A 8.4 8.4 8.4 8.4
Rated Current A 6.1 6.1 6.1 6.1
Torque Constant N·m/A 0.118 0.118 0.118 0.118
Encoder Resolution bit 16 16 16 16
Communication Bus - CAN CAN CAN CAN
Hollow Shaft Diameter mm 18 18 18 18
Total Length mm 92±0.5 92±0.5 92±0.5 92±0.5
Mass kg 1.5 1.5 1.5 1.5
Rotational Inertia g·cm² 746.7 746.7 746.7 746.7


Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer

  • Year Established:

    2017

  • Total Annual:

    10 million USD-15million USD

  • Employee Number:

    100~300

  • Ecer Certification:

    Verified Supplier

Shenzhen Seninter Precision Machinery Co., Ltd. integrates R&D, production, sales and after-sales services. We specialize in the R&D and manufacturing of AC motors, DC motors, servo motors, brushless motors, gearboxes, geared motors and harmonic reducers, as well as supporting components for... Shenzhen Seninter Precision Machinery Co., Ltd. integrates R&D, production, sales and after-sales services. We specialize in the R&D and manufacturing of AC motors, DC motors, servo motors, brushless motors, gearboxes, geared motors and harmonic reducers, as well as supporting components for...

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  • Shenzhen Seninter Precision Machinery Co.,Ltd.
  • Shenzhen, Guangdong, P.R.China
  • https://www.seninter.com/

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