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Neck Joint Motor MG 3505-36 – BLDC Servo with 36:1 Planetary Gearbox

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Categories	Neck Joint Motor
Brand	Solismotor Custom Robot Joint Drives
Model	MG 3505-36
Rated Torque	3.12 N·m
Peak Torque	8.01 N·m
Gear Ratio	36:1 Planetary
Encoder	14-Bit, Dual Support
Communication	CAN Bus / RS485
Protection	IP54
Weight	~177 g
Dimension	Ø45 x 44.1 mm

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Detail Information

MG 3505-36 Integrated Robot Joint Motor

The MG 3505-36 is a highly integrated, compact robot joint actuator module independently developed by Solismotor. It integrates a BLDC servo motor, high-precision planetary gearbox, drive control system, and dual encoder feedback into a single unit, providing a high-performance, high-precision, and highly reliable power solution for various robot applications.

Ø45×44.1mm Ultra-Compact 3.12 N.m Rated / 8.01 N.m Peak Torque 36:1 Precision Planetary Gearbox IP54 Protection Rating 14-Bit High-Resolution Encoder

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Engineered for Precision Motion

Feature – Integrated All-in-One Design

The MG 3505-36 integrates a BLDC servo motor, 36:1 planetary gearbox, drive electronics, and dual encoders in a single Ø45×44.1mm housing. This eliminates the need for separate component sourcing, wiring, and tuning.

Advantage – Reduced System Complexity

By combining motor, gearbox, driver, and encoder into one module, engineers can cut development time by up to 60% and simplify overall system architecture significantly.

Benefit – Faster Time to Market

With plug-and-play integration, R&D teams can focus on application-level development rather than motor control, accelerating robot prototyping and production ramp-up.

Feature – High Torque Density

Rated output torque of 3.12 N·m with peak stall torque reaching 8.01 N·m. The 36:1 planetary gearbox delivers exceptional torque density in a compact form factor.

Advantage – Superior Dynamic Performance

High torque-to-weight ratio enables faster acceleration, smoother motion, and greater load capacity — critical for responsive robot joint movement.

Benefit – Handles Demanding Applications

Suitable for humanoid robots, collaborative robots, and exoskeletons where high torque and compact size are essential for natural, powerful motion.

Feature – Dual Encoder Feedback & IP54 Protection

Built-in 14-bit high-resolution encoder with support for secondary encoder feedback on the output shaft. IP54-rated sealed housing protects against dust and water splashes.

Advantage – Precision & Reliability

Dual-loop feedback ensures accurate position, speed, and torque control. IP54 enables deployment in harsh industrial environments without performance degradation.

Benefit – Long-Term Operational Stability

Reliable feedback and environmental protection reduce maintenance needs and ensure consistent performance over extended operating periods.

Technical Specifications

ParameterValue

ModelMG 3505-36

Winding MethodY (Star)

Voltage Range12 ~ 40 VDC

Rated Torque3.12 N·m

Peak Torque8.01 N·m

Gear Ratio36:1 (Planetary)

Encoder Resolution14-Bit

CommunicationCAN Bus / RS485

Protection RatingIP54

Weight (with driver)~177 g

Dimension (with driver)Ø45 × 44.1 mm

Noise< 60 dB

Working Temperature-20 ~ +80 °C

Dual Encoder SupportYes (Output Shaft)

Custom Brake SupportYes

Key Applications

Humanoid Robots

Joint actuation for bipedal and full-body humanoid platforms

Collaborative Robots

Safe, precise motion for cobot arms and grippers

Exoskeletons

Power assist and rehabilitation exoskeleton systems

Education & Research

Robotics labs, university projects, and prototyping

Medical Assistants

Surgical robots and rehabilitation equipment

Smart Automation

Automated guided vehicles and smart manufacturing

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