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Direct-Drive Planetary Roller Screw Reducer

Direct-Drive Planetary Roller Screw Reducer
Direct-Drive Planetary Roller Screw Reducer

Direct-Drive Planetary Roller Screw Reducer

Utilizing a main screw and planetary screws, this unit achieves high torque transmission, high rigidity, and a long service life. It features a displacement accuracy deviation of ≤0.1mm, a load-bearing torque of ≥500N·m, and a weight of ≤1kg, while operating across a wide temperature range. This robotic reducer offers advantages such as high load capacity, impact resistance, compact size, high speed, and low noise.


Precision planetary reducers are highly versatile, rigid, modular transmission products that employ the principle of multi-tooth load-sharing mesh to achieve stable speed reduction and torque amplification. They offer a comprehensive set of benefits: compact size, high output torque, high rigidity, excellent impact resistance, and smooth transmission. This series utilizes precision tooth profile modification and composite material matching to effectively reduce transmission noise and backlash, thereby enhancing overall service life and operational stability. Perfectly compatible with DC, stepper, and servo motors, these reducers serve a wide range of sectors—including smart home appliances, automotive actuators, industrial automation, robotics, and light industrial equipment—and support full-size, full-specification ODM/OEM customization.

Core Functional Advantages

Compact Coaxial Structure with High Torque Density: Features a coaxial planetary transmission layout where multiple gears share the load simultaneously. This design delivers the same torque output with a smaller, lighter footprint, effectively saving installation space and aligning with trends toward equipment miniaturization and integration.

 

High Rigidity, Load Resistance, and Durability: Synchronous multi-tooth meshing ensures uniform load distribution and excellent structural rigidity. The unit withstands instantaneous overloads and the shocks of frequent start-stop cycles; it is vibration-resistant, wear-resistant, and reliable during long-term continuous operation, making it ideal for high-intensity, high-frequency applications.

 

Stable Transmission Precision and Low Backlash: Precision gear grinding and tooth profile optimization effectively minimize transmission backlash (with precision models achieving ≤0.1°). It ensures smooth forward/reverse switching and accurate positioning, free from noticeable lag or stuttering.

 

High Transmission Efficiency and Energy Savings: Single-stage transmission efficiency reaches 95%, with low losses in multi-stage configurations. High power transmission utilization effectively reduces operational energy consumption, making it suitable for equipment requiring long-term continuous operation. Quiet and smooth operation, suitable for diverse scenarios: Featuring uniform gear meshing and precise clearances, and utilizing specialized noise-reducing grease, the unit operates with minimal vibration and noise; it meets the need for quiet home environments while also suiting stable industrial applications.

 

Wide temperature range and weather resistance: Constructed from a composite of high-quality alloy steel and high-strength engineering plastics, it operates reliably across a wide temperature range; with excellent moisture, dust, and temperature resistance, it is well-suited for demanding operating conditions.

 

Modular design with strong customization capabilities: Featuring a standardized modular structure—including multi-stage options, a wide range of gear ratios, and various sizes and configurations—it allows for rapid integration with different motors and equipment designs, thereby shortening the customer's product development cycle.

Key Technical Parameters

Parameter Item

Specifications

Product Type

Micro/Small Precision Planetary Gear Reducer (Single/Double/Multi-stage options)

Standard Gear Ratios

Single-stage: 3–10; Double-stage: 12–100; Multi-stage: 100–200 (Customizable)

Output Torque Range

0.5–25 N·m (High-torque customization available)

Max. Input Speed

≤18,000 rpm

Transmission Efficiency

Single-stage ≥95%; Double-stage ≥92%; Multi-stage ≥90%

Precision

Standard: ≤0.2°; Precision: ≤0.1°

Core Materials

High-strength alloy steel gears;

High-elasticity special alloy steel components; wear-resistant precision transmission structure.

Operating Noise

Precision quiet design; no abnormal noise or vibration under heavy load

Operation Mode

Bi-directional (forward/reverse); supports high-frequency start-stop and continuous cyclic operation

Compatible Motors

Servo motors, stepper motors, precision DC motors.

Application Areas

Thanks to their versatility, cost-effectiveness, high torque, high rigidity, and fatigue resistance, planetary gear reducers are the most widely used transmission components in both consumer and industrial equipment. They are suitable for heavy-load applications, high-frequency start-stop cycles, and cost-sensitive mass production, covering sectors such as home appliances, automotive systems, automation, robotics, and light industrial equipment.

 

Smart Home Appliances: Widely used in smart small appliances such as coffee grinder modules, robot vacuum drive systems (for movement and brush rotation), upholstery cleaners, food processors, air purifiers, smart bathroom fixtures, and electric curtains. Their low noise, long service life, and low cost make them ideal for quiet home environments and frequent, long-term start-stop operations.

 

Automotive Smart Cockpits: Suitable for automotive actuators such as door mechanisms, seat recliners, central display rotation drives, rearview mirror folding mechanisms, fuel filler flap actuators, air vent adjusters, and compact trunk locking drives. They feature automotive-grade performance, including resistance to extreme temperatures and vibration, low noise output, and high durability.

 

Industrial Automation Equipment: Applied in small assembly machinery, sorting equipment, conveyor lines, packaging machinery, spraying equipment, and CNC auxiliary transmission modules. High rigidity, overload resistance, and stable start-stop performance meet the demands of 24-hour continuous factory operations while enhancing equipment stability.

 

Smart Service Robots: Suitable for drive systems and fine-adjustment transmission modules in commercial service robots, cleaning robots, AGVs (Automated Guided Vehicles), and inspection robots. Compact size and high torque allow for use in tight spaces; they support frequent forward/reverse switching, smooth operation, and energy-efficient performance.

 

New Energy and Smart Equipment: Suitable for solar tracking mechanisms, lithium battery automation equipment, small new energy transmission units, and lightweight smart motion equipment. High transmission efficiency and low power consumption meet the requirements for long-term, energy-efficient operation in new energy equipment.

 

Medical and Precision Instruments: Used in general medical auxiliary equipment, testing instruments, laboratory setup devices, and smart sensing/adjustment mechanisms. Smooth transmission, minimal vibration, and high stability meet the transmission and positioning standards required for precision equipment.

 

General Light Industrial Equipment: Suitable for general industrial applications such as textile machinery, printing equipment, small-scale lifting gear, and light-duty conveyor systems. These units offer high load-bearing capacity, ease of maintenance, and excellent cost-effectiveness, making them ideal for large-scale industrial integration.

 

Customization Services

 

Henghe Precision offers one-stop ODM/OEM customization services for planetary gearboxes. We provide tailored solutions—including gear ratios, output torque, backlash, output shaft configurations, mounting flanges, dimensions, and noise reduction designs—based on specific customer requirements regarding motor parameters, mounting structures, load conditions, and product positioning. Our services cover everything from technical drawing integration and structural optimization to sample testing, small-batch pilot production, and mass-volume delivery.

Get In Touch

If you have any questions about products, technical support, after-sales service, etc., Please feel free to contact us at any time.

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