EP-Wheel Drives Planetary Gearbox

The EP-Wheel Drives Planetary Gearbox (Model 3) is designed for heavy-duty applications, offering versatile performance with various ratios. It delivers an output torque of 850 Nm (normal) and 1700 Nm (intermittent). Available in several gear ratios (2.54, 3.67, 11.19, 13.66, 15.51, 18.33, and 20.78), it supports single or double reduction options. The gearbox is compatible with SAE A motor pilot/hubs and includes a 13T-16/32 spline or 15T-16/32 spline, with a 1″-6B spline motor input. The maximum input speed is 3500 rpm, and the unit operates without a brake (brake torque not applicable). The gearbox is designed for robust performance in demanding environments, and customization options are available based on specific needs (e.g., manual disconnect application).

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1. Technical Specifications & Performance

output torque (N.m)		Ratio (i)		Recommend Hydraulic Motor pilot/hubs and input spline	Max. input speed (rpm)	Brake torque (N · m)
normal	Max. Intermittent
850	1700	2.54, 3.67	Single reduction	SAE A motor pilot/hubs 13T - 16/32 Spline 15T - 16/32 Spline 1" - 6B Spline	3500	Without brake
		11.19, 13.66	Double reduction
		15.51, 18.33
		20.78
* Input rotation opposite output rotation.
* Other ratios and other input types can be special designs.
* If with manual disconnect application, please add a mark "M" at the end of the order number.

Wheel Drives Planetary Gearbox Parameter

Wheel Drives Planetary Gearbox
Options	Description	Order Number	Use Option Order Codes to Build Order Number
Model Series	Model 3	3W	3W
Motor Pilot/Hubs	SAE A	A	A
Motor Input Spline	13T - 16/32 15T - 16/32 1"-6B	13 15 6B	13
Ratio Options	2.54, 3.67, 11.19, 13.66 15.51, 18.33, 20.78	02, 03, 11, 13 15, 18, 20	18
Output Options	9/16×2.75 NONE	18 0	18
Brake	Without Brake	WO	WO
Disconnect	With disconnect Without disconnect	M NONE	M
Example of complete order code: 3W A 13 18 18 WO M

2. Wheel Drives Planetary Gearbox Dimensions

Gearbox Planetary-Wheel Drives-EP-Wheel Drives Planetary Gearbox-diagram

3. Five Key Advantages of Wheel Drives Planetary Gearbox

1. Superior Torque Density: The Wheel Drives Planetary Gearbox utilizes multiple planet gears to share the load, allowing for much higher torque capacity than traditional gear sets of the same size.

2. Compact Modular Design: Its space-saving architecture is perfect for integration into wheel hubs where space is limited, making it the ideal small planetary gearbox for mobile robots and compact loaders.

3. Exceptional Mechanical Efficiency: Precision-ground gears ensure that energy loss is minimized during transmission, which is vital for battery-operated electric vehicles and fuel-efficient diesel machinery.

4. High Radial and Axial Load Capacity: Equipped with heavy-duty tapered roller bearings, the Wheel Drives Planetary Gearbox can support the full weight of the vehicle while maintaining smooth rotation.

5. Environmental Resilience: With IP-rated sealing and high-grade materials, these gearboxes are protected against dust, water, and corrosive elements found in mining and maritime applications.

4. Planetary Gearbox Working Principle

At its core, the system consists of three main components: a central sun gear, several planet gears, and an outer ring gear (also known as an annulus). When the input shaft turns the sun gear, it drives the planet gears, which are held within a planetary carrier. These planet gears mesh with both the sun gear and the stationary ring gear, causing the carrier to rotate at a reduced speed but with significantly increased torque. In a typical Wheel Drives Planetary Gearbox application, the ring gear is often integrated into the rotating wheel hub, while the carrier or sun gear serves as the input from the motor. This allows for massive planetary reduction gearbox ratios in a very small space. The beauty of this design lies in its symmetry; because the forces are balanced across multiple gears, the internal stresses are lower than in a standard spur gear arrangement. This contributes to the planetary gearbox design's longevity and its ability to handle sudden shock loads, such as when a vehicle encounters an obstacle or starts under a full load. For engineers, a detailed planetary gearbox diagram reveals the intricate balance of tooth geometry and lubricant flow that ensures these units operate quietly and efficiently for thousands of hours.

Gearbox Planetary-Wheel Drives-EP-Wheel Drives Planetary Gearbox-draft

5. Advanced Materials for Unmatched Durability

The longevity of a Wheel Drives Planetary Gearbox is directly tied to the quality of its components. We utilize 20CrMnTi alloy steel for our gears, a material renowned for its excellent hardenability and toughness. Each gear undergoes a rigorous carbonitriding and quenching process, resulting in a surface hardness of HRC 58-62 while maintaining a ductile core to absorb shock loads. The housing of the Wheel Drives Planetary Gearbox is cast from high-strength ductile iron, which provides superior vibration damping and structural integrity compared to standard grey iron. This is particularly important for planetary gearbox design in mobile applications where constant jarring and uneven terrain are the norms. Furthermore, our seals are sourced from industry-leading manufacturers to ensure that the internal planet gearbox components remain free from contamination. For specialized environments, such as marine or chemical processing, we offer stainless steel variants or specialized anti-corrosion coatings.

6. Global Compliance & Regional Regulations

Adhering to international and regional standards is a cornerstone of our manufacturing philosophy. The Wheel Drives Planetary Gearbox is designed and tested in accordance with ISO 6336 standards for gear load capacity calculation, ensuring global reliability. In South Korea, we strictly follow the Korea Industrial Standards (KS), specifically KS B 6210 for general gear accuracy and KS B ISO 9001 for quality management systems. Furthermore, our products comply with the European Union's Machinery Directive 2006/42/EC and are CE marked for export to European markets. For the North American market, our planetary gearboxes meet AGMA (American Gear Manufacturers Association) specifications.

7. Versatile Application Scenarios

Construction & Earthmoving

The Wheel Drives Planetary Gearbox is the powerhouse behind excavators, pavers, and track loaders. It provides the high torque needed to navigate steep slopes and loose soil.

Agricultural Machinery

From self-propelled harvesters to irrigation systems, these gearboxes ensure reliable movement across uneven fields, supporting South Korea's transition to smart farming technology.

Mining & Tunneling

In the harsh, dark environments of underground mines, the robust sealing and high load capacity of our planetary reduction gearbox units ensure continuous operation without failure.

Logistics & AGVs

For automated guided vehicles and warehouse robots, our small planetary gearbox models provide the precision and compact torque needed for nimble, efficient material handling.

Gearbox Planetary-Wheel Drives-EP-Wheel Drives Planetary Gearbox-show1

8. Why choose us?

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.

Workshop

9. Engineer's Field Notes & Client Reviews

Client: Senior Mechanical Engineer, Construction Equipment Manufacturer
Location: South Korea (Gyeonggi-do)
Purchase Intent: Hub Drive System for 20-ton Tracked Excavators
Field Note: We integrated the Wheel Drives Planetary Gearbox into our latest excavator series. The most impressive aspect is the thermal stability under heavy load. During peak operation in mid-summer, the oil temperature remained well within the safety limits, which is a testament to the planetary gearbox design's efficiency. The mounting interface was a perfect match for our hydraulic motors, saving significant assembly time.

Client: Operations Manager, Modern Vineyard Logistics
Location: Australia (Barossa Valley)
Purchase Intent: Drive System for Automated Grape Harvesters
Field Note: Reliability is everything during harvest season. We replaced our old planetary gear boxes with the EP-Wheel Drives series and saw an immediate reduction in vibration. The high planetary gearbox ratio allows our machines to move with precision at very low speeds, which is critical for preventing damage to the vines. Truly a robust solution for agricultural mobile machinery.

10. Related Products & Integrated Solutions

Achieving peak performance requires more than just a high-quality gearbox; it requires a compatible system. We also manufacture professional-grade PTO Shafts and high-torque motors specifically designed to complement our planetary gearboxes. This one-stop supply advantage ensures perfect synchronization between your power source and the Wheel Drives Planetary Gearbox, eliminating compatibility issues and simplifying your procurement process.

Industrial Motor High-Torque Drive Motor

Compatible Agricultural PTO Shaft

Frequently Asked Questions (FAQ)

Q1. How does a Wheel Drives Planetary Gearbox improve the overall efficiency of mobile construction equipment in Korea?

A: By utilizing a high-efficiency planetary gearbox design, our units reduce energy loss through friction, allowing for better fuel economy in diesel machines and longer battery life in electric loaders used in Korean urban construction projects.

Q2. What makes your planetary gearbox manufacturers the top choice for high-torque agricultural applications worldwide?

A: Our focus on 20CrMnTi alloy steel and advanced gear grinding ensures that our planetary gearboxes can handle the intense shock loads and muddy terrain typical of large-scale farming, providing unmatched durability.

Q3. Where can I find a reliable supplier for a custom Wheel Drives Planetary Gearbox for mining vehicles?

A: We offer specialized planetary reduction gearbox solutions with enhanced sealing and custom ratios specifically designed for the demanding conditions of mining and tunneling machinery, ensuring long-term performance.

Q4. What is the standard planetary gearbox working principle that allows for such a compact hub drive?

A: It works by splitting the input torque across multiple planet gears that revolve around a sun gear within an outer ring gear, multiplying torque significantly while keeping the overall planetary gear box size minimal.

Q5. Which planetary gearbox ratio is most suitable for heavy-duty tracked harvesters in uneven agricultural fields?

A: Depending on the motor speed, a multi-stage 2 stage planetary gearbox with ratios between 50:1 and 150:1 is often ideal for providing the necessary traction to navigate difficult, sloping agricultural terrains.

Q6. What are the key factors in planetary gearbox design that ensure survival in freezing Arctic mining conditions?

A: We use specialized low-temperature lubricants and high-grade alloy steels that maintain ductility at sub-zero temperatures, ensuring the Wheel Drives Planetary Gearbox remains functional in even the harshest global climates.

Q7. Why is a planetary helical gearbox often preferred for applications requiring extremely quiet operation in urban areas?

A: Helical teeth have a higher contact ratio and engage more gradually than spur gears, which significantly reduces noise and vibration in a Wheel Drives Planetary Gearbox, making it perfect for city-based equipment.

Q8. How does the cost of a small planetary gearbox compare when considering its long-term maintenance in robotics?

A: While the initial investment might be higher than simple gear sets, the Wheel Drives Planetary Gearbox offers a much longer lifecycle and lower maintenance costs due to its balanced load distribution and robust design.

Editor: PXY

EP-Wheel Drives Planetary Gearbox