CubeMars AKE90-8 KV35 Quasi Direct Drive Robotic Actuator – 170Nm Peak Torque, 9 Arcmin Backlash, Modular Design Robot Motor for Exoskeletons

The CubeMars AKE90-8 KV35 Robotic Actuator is a compact and powerful quasi direct drive actuator designed for high-precision applications such as exoskeletons, bipedal robots, collaborative robotic arms, and automation platforms. It combines a high-performance brushless motor with a planetary gear reducer, delivering 170Nm peak torque, 55Nm rated torque, and an exceptional torque density of 121.4 Nm/kg, all while maintaining low backlash under 9 arcmin.

With its modular architecture, quiet operation, and upgraded winding structure, the AKE90-8 ensures long-term reliability and ease of integration across demanding robotic systems.

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Key Features

1. Quasi Direct Drive with Planetary Gear

• Delivers precision motion with 9 arcmin low-backlash

• High load capacity gear set ensures torque stability even under dynamic load
  

2. High Torque-to-Weight Ratio

• Achieves up to 170Nm peak torque

• Torque density of 121.4 Nm/kg, ideal for portable, weight-sensitive designs
  

3. Ultra-Quiet & Smooth Operation

• Built with Grade 5 precision gears and optimized reducers

• Effectively reduces operating noise and improves service life
  

4. Upgraded Copper Windings for Efficiency

• New winding process boosts slot fill rate by 10%

• Reduces copper loss and thermal rise, enabling higher sustained torque
  

5. Modular Construction

• Motor and reducer separated for independent maintenance

• Enables faster integration and lower replacement costs
  

6. Robust Build with Excellent Thermal Performance

• Designed for harsh environments with Class H insulation

• Stable operation from -20°C to +50°C

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Specifications

Application	Exoskeleton	Ke (V/krpm)	0.0285
Driving way	FOC	Phase to Phase resistance (MΩ)	164
Operation ambient temperature	-20~50	Phase to Phase inductance (μH)	235
Winding type	delta	Inertia (gcm²)	3377.08
Insulation class	H	Km (Nm/√W)	0.67372
Insulation High-voltage (V)	1000V 5mA/2s	Mechanical time constant (ms)	2.18
Insulation resistance (MΩ)	1000V 10MΩ	Electrical time constant (ms)	1.4329
Pole pairs	21	Weight (g)	1400
Backlash (arcmin)	9	Maximum torque weight ratio (Nm/kg)	121.4
Rated voltage (V)	48	Peak torque (Nm)	170
No-load speed (rpm)	210	Peak current (ADC)	72
Rated torque (Nm)	55	Kv (rpm/V)	35
Rated speed (rpm)	120	Kt (Nm/A)	0.272
Rated current (ADC)	21

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Applications

• Wearable Exoskeletons for rehabilitation or industrial strength augmentation

• Bipedal Humanoids requiring fine joint control with low backlash

• Precision Robotic Arms used in collaborative environments

• Mobile Robotics & AGV Systems that require modular actuator systems

Details

Technical Drawing

Test Data

Performance chart for CubeMars AKE90-8 KV35@48VDC actuator showing output power, efficiency, current, and speed vs. torque, including detailed metrics.

CubeMars AKE90-8 RV Actuator: Light, compact, precise, powerful with planetary gear.

Precision transmission with heavy load capacity. Achieves high accuracy, optimized reducer, peak torque density of 121 N.m/kg.

Quiet, precise CubeMars AKE90 RV Actuator with grade 5 gears reduces noise, extends lifespan.

Winding upgrading boosts efficiency by 10%, reducing losses for superior torque output.

Modular design for hassle-free maintenance. Easy disassembly and quick upkeep.