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What is a Solar Tracker Slew Drive?

What is a Solar Tracker Slew Drive?

2025-08-25

What is a Solar Tracker Slew Drive?

A Solar Tracker Slew Drive is a gear-driven rotation unit used to control the movement of solar panels in single-axis or dual-axis tracking systems. It combines a slewing ring bearing, enclosed housing, worm gear, and electric or hydraulic motor into a compact, sealed system.

This mechanism enables accurate and stable rotation, allowing solar modules to continuously face the sun at the optimal angle, which increases energy generation by up to 30–40% compared to fixed installations.


 Key Features

  • High Torque Capacity
    Capable of withstanding wind loads and moving heavy PV modules with ease.

  • Fully Enclosed Design
    Resistant to dust, water (IP66-rated), and extreme weather — ideal for outdoor environments.

  • Self-Locking System
    The worm gear design offers excellent holding torque, ensuring position stability without the need for brakes.

  • Custom Motor Options
    Compatible with DC motors, stepper motors, AC motors, and hydraulic motors based on project requirements.

  • Maintenance-Free Operation
    Lubricated and sealed for long-term operation with minimal service.


Applications in Solar Tracking

Slew drives are essential in various solar tracker systems, including:

  • Single-Axis Trackers – East-west movement to follow the sun across the sky

  • Dual-Axis Trackers – Horizontal and vertical movement for maximum sun exposure

  • Concentrated Solar Power (CSP) Systems – Precise tracking required for mirrors and lenses

These drives are used in utility-scale solar farms, rooftop PV systems, off-grid solar arrays, and even portable solar units.

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Blog Details
Created with Pixso. Evde Created with Pixso. Blog Created with Pixso.

What is a Solar Tracker Slew Drive?

What is a Solar Tracker Slew Drive?

What is a Solar Tracker Slew Drive?

A Solar Tracker Slew Drive is a gear-driven rotation unit used to control the movement of solar panels in single-axis or dual-axis tracking systems. It combines a slewing ring bearing, enclosed housing, worm gear, and electric or hydraulic motor into a compact, sealed system.

This mechanism enables accurate and stable rotation, allowing solar modules to continuously face the sun at the optimal angle, which increases energy generation by up to 30–40% compared to fixed installations.


 Key Features

  • High Torque Capacity
    Capable of withstanding wind loads and moving heavy PV modules with ease.

  • Fully Enclosed Design
    Resistant to dust, water (IP66-rated), and extreme weather — ideal for outdoor environments.

  • Self-Locking System
    The worm gear design offers excellent holding torque, ensuring position stability without the need for brakes.

  • Custom Motor Options
    Compatible with DC motors, stepper motors, AC motors, and hydraulic motors based on project requirements.

  • Maintenance-Free Operation
    Lubricated and sealed for long-term operation with minimal service.


Applications in Solar Tracking

Slew drives are essential in various solar tracker systems, including:

  • Single-Axis Trackers – East-west movement to follow the sun across the sky

  • Dual-Axis Trackers – Horizontal and vertical movement for maximum sun exposure

  • Concentrated Solar Power (CSP) Systems – Precise tracking required for mirrors and lenses

These drives are used in utility-scale solar farms, rooftop PV systems, off-grid solar arrays, and even portable solar units.