Boxin · Hengzhen · Botrust
Precision Manufacturing・Powering the World
SG-8021
This is the SG-8021, a compact joint‑drive motor with an integrated planetary gearbox, specifically designed as a highly integrated drive‑control unit for robotic joints. With an outer diameter of 100 mm and a thickness of 42.6 mm, it weighs just 671 g, delivering high torque density—10 Nm rated torque and 30 Nm peak torque—within a compact footprint. Backlash is tightly controlled at 15–20 arcminutes, and it supports a wide input voltage range of 24–48 V. It meets the joint‑drive requirements of collaborative robots, service robots, and other applications, while also offering support for custom, non‑standard development.
- Product Description
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I. Product Overview
SG-8021 is a Integrated drive-and-control flat-type joint reduction motor Specifically designed for joint actuation in collaborative robots, service robots, and automated equipment, it integrates a planetary gearbox, a brushless motor, and a control unit, achieving a balance of compact design, high‑precision control, and high torque density—making it an ideal drive solution for small and medium‑sized robot joints.
II. Core Specifications and Parameters
Parameter item Indicator Transmission structure Planetary gear structure Outer diameter dimension 100 mm Product thickness 42.6 mm Reduction ratio i=9.25 Backlash 15-20 arcminutes Motor power 213 W Rated voltage 24-48 V Rated speed 160 rpm Rated torque 10 Nm Peak torque 30 Nm No-load speed 240 rpm Product weight 671 g Allow radial force 1300 N Allow axial force 550 N
III. Core Product Advantages
- Compact and lightweight design
- With an outer diameter of just 100 mm, a thickness of 42.6 mm, and a weight of only 671 g, it significantly reduces the space required for equipment installation, making it well-suited for applications such as robot joints where volume and weight are critical considerations.
- High torque density and high precision
- Rated torque: 10 Nm; peak torque up to 30 Nm, while maintaining a low backlash of 15–20 arcminutes, balancing output capability with positioning accuracy to meet the rigidity and control requirements of joint drives.
- Integrated Drive-and-Control Solution
- It features a built-in planetary gearbox and drive control unit, supports a wide 24–48 V input voltage range, and integrates functions such as a thermistor and position feedback, thereby reducing external wiring and enhancing system stability.
- High Load Capacity and Durability
- It can withstand a radial force of 1300 N and an axial force of 550 N, is suitable for dynamic load conditions, features a robust and reliable structure, and meets the demands of long-term automated operation.
IV. Typical Application Scenarios
- Collaborative robots, small industrial robot joint drives
- Quadruped robots, humanoid robot limb joints
- Intelligent Warehousing AGV/AMR Steering and Lifting Mechanism
- Human exoskeleton, rehabilitation robot drive unit
- Precision rotary platform and gimbal mechanism for automated equipment
V. Description of Additional Services
The manufacturer offers non‑standard customization services, providing tailored design and development to meet customers’ specific specifications and supporting a wide range of application scenarios.
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