EP-Model 6 Wheel Drives Planetary Gearbox With Long Flange Distance
The Model 6 Wheel Drives Planetary Gearbox is a robust, high-performance transmission solution for heavy-duty applications. It offers output torque of 3,400 N·m (normal) and 7,000 N·m (maximum intermittent). The Wheel Drives Planetary Gearbox comes with various gear ratios: 2.81, 3.47, and 4.54 for single reduction and 12.45, 15.91, 20.05, 23.71, 27.50, and 34.31 for double reduction. The Wheel Drives Planetary Gearbox is designed to operate at a maximum input speed of 3,500 rpm. The recommended hydraulic motor pilot/hubs include 13T-16/32 Spline, 15T-16/32 Spline, and others, providing flexibility for various setups. Additionally, the gearbox features a brake torque of 440 N·m and operates at brake work pressures ranging from 22-50 bar. This model is ideal for applications requiring high durability and reliable performance in demanding environments.
1. Technical Performance & Parameters
| 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 | ||||||
| 3400 | 7000 | 2.81, 3.47, 4.54 | Single reduction | SAE A, B motor pilot/hubs 13T - 16/32 Spline 15T - 16/32 Spline 1" - 6B Spline 14T - 12/24 Spline | 3500 | 440 | 22-50 |
| 12.45, 15.91 | Double reduction | 330 | 27-50 | ||||
| 20.05, 23.71 | 260 | 22-50 | |||||
| 27.50, 34.31 | 160 | 17-50 | |||||
| * Input rotation opposite output rotation. | |||||||
| * Other ratios and other input types can be specially designed. | |||||||
| * If with manual disconnect application, please add a mark "M" at the end of the order number. | |||||||
Model 6 Wheel Drives Planetary Gearboxes Parameter
| Model 3 Series Wheel Drives Planetary Gearbox (Long Flange Distance Version) | |||||||||
| Options | Description | Order Number | Use Option Order Codes to Build Order Number | ||||||
| Model Series | Model 6 | 6W | 6W | ||||||
| Motor Pilot/Hubs | SAE A | A | A | ||||||
| SAE A1 | A1 | ||||||||
| SAE B | B | ||||||||
| SAE B1 | B1 | ||||||||
| Motor Input Spline or Shaft Input Options | 13T - 16/32 | 13 | 13 | ||||||
| 15T - 16/32 | 15 | ||||||||
| 1” - 6B | 6B | ||||||||
| 14T - 12/24 | 14 | ||||||||
| 2K Bearing less | 2K | ||||||||
| OMSS Bearing less | OMSS | ||||||||
| Ratio Options | 2.81, 3.47, 4.54 12.45, 15.91, 20.05, 23.71, 27.50, 34.31 | 02, 03, 04 13, 15 20, 24 26, 30 | 15 | ||||||
| Output Options | 1/2×1.89 1/2×2.50 9/16×2.06 9/16×2.75 5/8×2.36 NONE | 15 16 17 18 8 0 0 | 15 | ||||||
| Brake | 160Nm | B4D | |||||||
| 260Nm | B4F | ||||||||
| 330Nm | B4H | B4H | |||||||
| 440Nm | B4L | ||||||||
| Without Brake | WO | ||||||||
| Disconnect | With disconnect | M | M | ||||||
| Without disconnect | NONE | ||||||||
| Example of complete order code: | 6W | A | 13 | 15 | 15 | B4H | M | ||


2. Five Key Advantages of Wheel Drives Planetary Gearbox
1. Extended Flange Versatility
The long flange distance design allows for superior mounting flexibility and increased clearance for braking systems and hydraulic connections, making this planetary gear box uniquely suited for specialized wheel drives.
2. High Torque Density
By leveraging an advanced epicyclic gearbox arrangement, our Model 6 delivers exceptional torque output within a minimal volume, outperforming traditional planetary helical gearbox designs in weight-to-power ratios.
3. Precision Engineering
Our planetary servo gearbox technology ensures minimal backlash and smooth rotation, which is vital for the precision steering and movement required in South Korea’s advanced robotics and automated terminal vehicles.
4. Thermal Management
The internal planetary gearbox design incorporates optimized lubrication paths that facilitate rapid heat dissipation, extending the service life of gears and seals during continuous high-load operations.
5. Global Compliance
Certified to international standards, this max planetary gearbox meets the stringent safety and environmental regulations of the EU and South Korea, ensuring smooth customs and operational approval for your projects.
3. How does a planetary gearbox work?

4. Premium Materials & Construction
5. Industrial Application Scenarios
Self-Propelled Sprayers
The long flange distance is perfect for agricultural sprayers, allowing for variable track widths and high ground clearance while maintaining the torque required for muddy fields.
Mining Excavators
In high-impact mining zones, our planetary gearbox provides the rugged durability needed for track drives and swing mechanisms under constant shock loads.
Airport Support Vehicles
For aircraft tugs and cargo loaders, the smooth power delivery of the planetary servo gearbox ensures safe and precise maneuvering of multi-million dollar assets.
6. Global Compliance & Regulatory Standards
7. About Our Engineering Excellence
WorkShop




8. Field Notes from Lead Engineers
Project Lead: Mr. Park Sang-hyuk
Location: Incheon, South Korea | Application: Port Cargo Transporters
"We have been testing the EP-Model 6 for over 18 months in our fleet of terminal tractors. The long flange distance was a game-changer for our hydraulic line routing. What impressed us most was the silent operation of the planetary gearbox compared to our previous suppliers. Even under 100% duty cycles in the humid port environment, the thermal stability of the planetary reduction gearbox remained excellent. The KCs compliance made the domestic approval process very straightforward."
Senior Mechanical Engineer: David Henderson
Location: Brisbane, Australia | Application: Mining Equipment Refit
"Transitioning to this 2 stage planetary gearbox for our custom drilling rigs has reduced our maintenance intervals significantly. The gear teeth finish on the planetary helical gearbox components is top-notch, leading to very low vibration levels. Dealing with a manufacturer that provides detailed planetary gearbox diagram files for our CAD integration saved our design team weeks of work. Truly a premium planetary gear box solution."
9. Related Solutions & Compatibility
PTO-SHAFT

MOTOR

Frequently Asked Questions
Q1. Is there a small planetary gearbox option that can handle 5000 Nm of torque?
Q2. Which planetary gearbox manufacturers offer the best long-term reliability for construction equipment?
Q3. What is the planetary gearbox working principle for a 2 stage reduction unit?
Q4. Where can I find a planetary gearbox supplier that meets Korean KCs safety standards?
Q5. How does a planetary gearbox work differently than a traditional helical gearbox?
Q6. What materials are used to ensure a planetary servo gearbox maintains high precision?
Q7. Can you provide a detailed planetary gearbox diagram for our vehicle chassis design team?
Q8. What are the advantages of a planetary right angle gearbox in mobile hydraulics?
Q9. How do you handle thermal heat in a high-torque planetary gearbox ratio application?
Editor: PXY




