SA Series Rigid Joint Motors

SA series rigid joint motors generally refer to integrated drive solutions with integrated high-precision reducers (such as harmonic reducers), which are suitable for scenarios with high requirements for rigidity, precision and compactness.

1. Core Features

High rigidity design: low backlash (usually <1 arcmin), high torsional stiffness, suitable for high dynamic response and precise positioning.

Integrated structure: integrated motor, encoder, harmonic reducer to reduce mechanical assembly error.

Compact and lightweight: suitable for space-constrained robot joints (such as collaborative robots, SCARA robotic arms).

High torque density: provides greater output torque at the same volume, supporting high-load applications.

High-precision feedback: equipped with multi-turn absolute encoder, with a resolution of more than 17 bits.

2.Application fields

Industrial robots: joint drive (six-axis robot, Delta robot).

Precision automation: semiconductor packaging, optical positioning platform.

Medical equipment: surgical robot, rehabilitation robot arm.

Aerospace: satellite antenna steering mechanism.

3. Selection points

Load requirements: calculate peak torque and continuous torque, and consider safety factors.

Motion curve: match the reduction ratio and motor power according to acceleration and speed.

Installation space: select flange size (such as 60mm/80mm/100mm) and shaft type (hollow shaft/solid shaft).

Environmental adaptability: high protection level models are required for high temperature/dust environments.

4. Common Problems and Solutions

Vibration suppression: optimize control algorithms (such as notch filters) and increase mechanical damping.

Heat dissipation management: ensure that the ambient temperature is <40°C, and install heat sinks or forced air cooling if necessary.

Installation alignment: use high-precision fixtures to ensure the coaxiality of the motor and the load.

5. Development Trends

Intelligence: integrated temperature/vibration sensors to support predictive maintenance.

Modularity: plug-and-play design to simplify the robot development process.

Lightweight materials: aluminum alloy shell or composite materials are used to reduce weight.