The EP-Model 4 Shaft Output Drives Planetary Gearbox is a highly efficient and durable gearbox solution suitable for demanding industrial applications. It offers a normal output torque of 2,400 N·m and a maximum intermittent torque of 4,520 N·m. The EP-Model 4 Shaft Output Drives Planetary Gearbox is available with 3.67:1 reduction for single-stage operation and 13.87:1 for double reduction. It supports a maximum input speed of 3,500 rpm and comes with various hydraulic motor pilot/hub options, including 13T-16/32 Spline, 15T-16/32 Spline, and 1”-6B Spline. The unit also features a brake torque of 440 N·m and operates with a brake work pressure ranging from 22-50 bar. This gearbox is designed for robust performance, providing high efficiency and reliability across different applications, including heavy machinery and automotive systems.
1. Technical Parameters of EP-Model 4 Shaft Output Drives Planetary Gearbox
| output torque (N.m) | Ratio (i) | Recommend Hydraulic Motor pilot/hubs and input spline | Max. input speed (rpm) | Brake torque (N.m) | Brake work pressure (bar) | ||
|---|---|---|---|---|---|---|---|
| normal | Max. Intermittent | ||||||
| 2400 | 4520 | 3.67 | Single reduction | SAE A motor pilot/hubs 13T - 16/32 Spline 15T - 16/32 Spline 1" - 6B Spline 14T - 12/24 Spline | 3500 | 440 | 22-50 |
| 13.87 | Double reduction | 260 | 14-50 | ||||
| * Input rotates, and output rotates in the same direction. | |||||||
| * Other ratios and other input types can be special designs. | |||||||
| * Other output shaft options or output spindle options. | |||||||
EP-Model 4 Shaft Output Drives Planetary Gearbox Parameter
| Model 4 Series Shaft Output Drives Planetary Gearbox | |||||||
|---|---|---|---|---|---|---|---|
| Options | Description | Order Number | Use Option Order Codes to Build Order Number | ||||
| Model Series | MODEL 4 | 4T | 4T | ||||
| Motor Pilot/Hubs | SAE A2 | A2 | |||||
| SAE A4 | A4 | A4 | |||||
| Motor Input Spline or Shaft Input Options | 13T - 16/32 | 13 | |||||
| 15T - 16/32 | 15 | ||||||
| 1" - 6B | 6B | ||||||
| 14T - 12/24 | 14 | 14 | |||||
| Shaft Input 1.5" Round | 1.5R | ||||||
| Ratio Options | 3.67 | 03 | 03 | ||||
| 13.87 | 13 | ||||||
| Output Options | 2.56 Round | A2 | A2 | ||||
| 2.00" Hex | H1 | ||||||
| Brake | 260Nm | B4F | |||||
| 440Nm | B4L | ||||||
| Without Brake | VO | WO | |||||
| Example of complete order code: | 4T | A4 | 14 | 03 | A2 WO | ||
Model 4 Shaft Output Drives Planetary Gearbox Dimensions



2. Advanced Shaft Output Drives Planetary Gearbox
3. Five Key Advantages of Shaft Output Drives Planetary Gearbox

4. How Does a Planetary Gearbox Work?
5. Materials & Structural Integrity
6. Versatile Application Scenarios
Marine & Offshore Gear
Utilized in winch drives and deck machinery for Korean vessel manufacturing. The Shaft Output Drives Planetary Gearbox provides the corrosion resistance and high torque required for deep-sea operations.
Construction Machinery
From excavators to tower cranes, our planetary reduction gearbox manages the heavy lifting and precise rotation needed on modern infrastructure projects.
Renewable Energy
In wind turbine yaw and pitch drives, the planetary gearbox design ensures stable power adjustment under unpredictable wind conditions.
Industrial Automation
When paired with a planetary servo gearbox, our systems provide the rapid response and positioning accuracy required for high-speed assembly lines.

7. Global & Regional Regulatory Compliance
8. Engineer's Field Notes & Reviews
Country: South Korea (Busan)
Application: Heavy Winch Control for Ship Loading Systems
"We integrated the Shaft Output Drives Planetary Gearbox into our latest cargo handling project at the Busan Port. The torque density allowed us to reduce the size of our winch assemblies by 20% compared to our previous helical reducers. The thermal stability under continuous 24-hour operation has been impressive. For Korean maritime standards, this is the most reliable planetary gearbox ratio configuration we have tested this year."
— Senior Mechanical Engineer, Maritime Solutions
Country: Australia (Perth)
Application: Mining Conveyor Drive System
"Operating in the Pilbara region requires gearboxes that can withstand extreme dust and heat. The EP-Model 4 epicyclic gearbox has exceeded our expectations for durability. The ease of mounting the planetary inline gearbox directly to our existing motor frames saved us significant installation time. A solid choice for any high-torque mining application where downtime is not an option."
— Operations Director, Open Pit Mining Group
9. About Our Commitment to Quality
With decades of experience in power transmission, we focus on providing high-torque solutions for modern industry. Our factory is equipped with advanced CNC grinding machines and automated heat treatment production lines, enabling the production of shaft-driven planetary gearboxes with industry-leading reliability. We don't just sell products; we provide customized, comprehensive drive solutions to address your unique engineering challenges. From the initial planetary gearbox design to final load testing, our engineers meticulously control every detail to ensure the final planetary gearbox fully meets your torque and speed requirements.
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10. Related Products

PTO Shaft Systems
Ensure seamless power transfer with our durable PTO Shaft, designed for high-stress agricultural and industrial applications.

Industrial Gear Motors
Our custom-wound electric motors are optimized for the torque characteristics of the Shaft Output Drives Planetary Gearbox series.
Frequently Asked Questions
Q1. Where can I find a Shaft Output Drives Planetary Gearbox that maintains high torque capacity for compact robotic drives?
Our compact series offers the same robust planetary gearbox design principles in a smaller frame, ideal for robotics and space-constrained precision machinery.
Q2. How does a planetary gearbox work when used in high-precision South Korean manufacturing automation lines?
The system balances rotational loads across multiple gears to provide smooth, high-torque motion that is essential for the precision demands of Korean automation.
Q3. Which Shaft Output Drives Planetary Gearbox supplier offers the best reliability for long-term industrial construction projects?
We focus on premium materials and global certifications to ensure our gearboxes outperform standard reducers in high-load construction and infrastructure scenarios.
Q4. Where can I find a reliable planetary gearbox manufacturers that specializes in multi-stage gear reduction systems?
Our engineering department specializes in modular planetary gearbox design, offering everything from single to quadruple stage reduction for any industrial application.
Q5. What specific planetary gearbox ratio is required for a large scale mining excavator drive system?
The ideal ratio depends on your motor RPM and desired output torque; our engineers help calculate the exact configuration needed for maximum efficiency.
Q6. When should a planetary servo gearbox be selected over a standard planetary helical gearbox for automation?
Select a servo-optimized gearbox when your application requires low backlash and high dynamic response for precise positioning and speed control tasks.
Q7. How can I get a technical planetary gearbox diagram for my custom industrial machinery design phase?
Simply contact our technical department with your model requirements, and we will provide detailed 2D and 3D CAD files for your project.
Q8. Which type of planetary reduction gearbox is most suitable for heavy-duty marine winch operations in Busan?
A Shaft Output Drives Planetary Gearbox with reinforced marine-grade sealing is the standard choice for handling the high torque and corrosive conditions of Busan ports.
Q9. What is the primary commercial benefit of choosing a high-efficiency epicyclic gearbox for energy projects?
The higher efficiency reduces total energy loss, leading to lower operating costs and a faster return on investment for large-scale utility projects.
Editor: PXY




