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High-Torque, Precision-Integrated Rotary Drive Systems
For Heavy-Duty & Critical Applications Worldwide
Lyradrive slew drive solution combining slewing bearing, high-efficiency gearbox, and drive unit (electric/hydraulic). Engineered to withstand extreme axial/radial loads, tilting moments, and harsh operating conditions—delivering reliable 360° rotation with minimal backlash.
Trusted slew drive manufacturer by OEMs in solar energy, construction, wind power, automation, and special equipment. Our slew drives reduce design complexity, cut assembly time, and boost your equipment’s performance, safety, and durability.
Talk to the EngineerOur Slew Drive Series
What is Slew Drive?
A slew drive is an integrated rotary actuator that combines slewing bearing, gearbox, drive motor and sealing system in one compact unit. It supports 360° continuous rotation and can withstand axial load, radial load and tilting moment at the same time. With high rigidity, smooth operation and self-locking capability, slew drives are widely used in applications requiring stable rotation, accurate positioning and heavy-load support.
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Benefits of Lyradrive Slew Drive
Heavy Load & High Rigidity
Stable performance under large axial, radial and tilting moment loads.
High Precision & Low Backlash
Ensures accurate positioning and smooth rotation for automation systems.
Self-Locking Safety
Worm gear design provides reliable self-locking to prevent reverse rotation.
High Protection & Durability
IP65 or higher protection, corrosion-resistant, suitable for outdoor harsh environments.
Compact & Easy Installation
Modular structure reduces design and assembly cost for your equipment.
Fully Customizable
Customizable ratio, torque, size, mounting, motor type and material.
How Do Slew Drives Work?
Slew drives are compact, integrated rotary actuators designed to convert input power into precise, controlled 360° rotation—while supporting heavy loads and resisting axial, radial forces, and tilting moments. Their operation relies on a synergistic combination of gear mechanics, bearing support, and sealing systems, with key components that each play a critical role in functionality. The core parts include the worm shaft, a helical-threaded input component connected to a motor or hydraulic drive; the worm wheel (or slew ring), a large ring-shaped gear with teeth that mesh with the worm shaft; four-point contact or double row bearings integrated into the slew ring; a housing that encases the gear system to protect internal components; and a self-locking mechanism inherent to helical worm gear designs.
Slew drives follow a simple, efficient power transmission sequence: first, an electric motor, hydraulic motor, or manual crank delivers rotational force to the worm shaft. Next, the helical thread of the worm shaft engages with the teeth of the worm wheel, converting the worm’s rotational motion into the worm wheel’s orbital rotation. The gear ratio—typically ranging from 30:1 to 100:1—determines the output speed and torque. As the slew ring rotates, integrated bearings distribute loads evenly. Finally, the self-locking feature stops the slew ring from rotating if power is lost, while sealing systems (IP55/IP65) protect against harsh environments.
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Types of Slew Drives
By Structure
- Worm Gear: High torque, self-locking, low noise, cost-effective.
- Planetary: High efficiency, high speed, strong impact resistance.
- Dual Worm: Extra-high rigidity and precision for heavy-duty equipment.
By Application
- Solar Tracking: For PV tracker, CSP, heliostat systems.
- Construction: For excavators, cranes, aerial platforms.
- Industrial & Automation: For rotary tables, robots, packaging.
- Wind Power & Special: For yaw, pitch, radar, antenna.
By Mounting Type
- Flange Mounted
- End Face Mounted
- Horizontal / Vertical Installation
Slew Drive Technical Specifications
| Drive Type | Single/Dual worm |
|---|---|
| Housing | Open/Enclosed housing |
| Backlash | Controlled Backlash |
| Locking | Self-locking helical gear – worm shaft mesh |
| Sealing | IP 55 / IP 65 Sealing |
| Bearing | Four-Point contact bearing (Single/Double row) |
| Material | Slew ring material: C45 |
| Design | Standard/Custom housing design |
| ID Range | 7.5” (200mm) - 20” (5000mm) across 6 models |
| Hardness | Bearing raceway hardened to 50~54HRC |
| Mounting | Standard/Custom mounting holes |
| Input | Standard/Custom spline and key worm shaft input |
| Manual Control | Standard/Custom manual rotator on worm shaft |
| Lubrication | Standard/Custom grease zerk locations |
| Speed | RPM range: 1~3 |
| Efficiency | Gear mesh efficiency ~40% |
| Finish | Standard Paint: C3 + ED Coating (Optional C5 + ED) |
Customization Services
Lyradrive provides professional custom slew drive design and manufacturing for global OEM & ODM customers.
- Size, diameter and mounting interface
- Gear ratio, torque and rotating speed
- Motor type: electric, hydraulic, DC, AC, servo
- Protection level: IP55, IP65, IP66, IP67
- Material & Surface treatment options
Key Applications
- Solar Tracking: Improves efficiency and stability.
- Construction: Stable rotation for excavators & cranes.
- Wind Turbine: Yaw and pitch control systems.
- Automation: Rotary platforms, robotic systems.
- Special Equip: Radar, marine machinery, medical.
Qualifications & Standards
- Advanced production and testing equipment
- 100% factory inspection and load testing
- Long service life and salt spray test validation
- Strict quality control system
- Certifications: ISO 9001 | CE | RoHS | TUV
Frequently Asked Questions
How to select a suitable slew drive?
Based on load type, tilting moment, rotation speed, installation space and environment.
Does slew drive have self-locking function?
Worm gear type supports self-locking; planetary type usually does not.
What protection grade can you provide?
IP55 to IP67 for outdoor, humid and corrosive environments.
What is the lead time for custom orders?
Depending on design and quantity, usually 15–35 days.
Get Professional Slew Drive Solution
Send us your parameters and requirements. Our engineering team will provide free selection suggestions, custom design proposals, competitive quotations, and fast sample support.
Request a Quote Today
WhatsApp
sales@lyradrive.com
+8613903880726