The Sitrak Wheel Hub Gearbox Housing Assembly is a precision-engineered, integral component of the wheel-end reduction system for Sinotruk Sitrak heavy-duty trucks. As a high-quality offering within the comprehensive range of Sinotruk Sitrak parts, this assembly houses and protects the planetary gear set, enabling critical torque multiplication at the wheel hub. Designed for durability and optimal power transfer, the Sitrak Wheel Hub Gearbox Housing Assembly ensures reliable performance under extreme loads, contributing significantly to vehicle traction, fuel efficiency, and overall drivetrain longevity in demanding commercial applications.
The Sitrak Wheel Hub Gearbox Housing Assembly is a critical sub-assembly that forms the outer casing and internal support structure for the planetary gear reduction system located at each rear wheel hub of Sinotruk Sitrak trucks. It encases the planetary gear set (including planet gears, sun gear, and carrier), providing a rigid, sealed environment that protects these precision components from dirt, moisture, and impact damage. This housing is engineered to withstand the high torsional forces generated during torque multiplication, ensuring that power from the axle shaft is efficiently transferred to the wheel with minimal energy loss.
Constructed from high-strength, cast alloy iron or ductile steel, the Sitrak Wheel Hub Gearbox Housing Assembly offers exceptional durability and resistance to fatigue. Its design incorporates precisely machined bearing seats and gear mounting surfaces to ensure perfect alignment of the planetary gear train. The assembly includes a Planet Carrier Assembly, which holds multiple Planet Gears (Z=16) on their respective Planet Gear Axles, supported by Needle Roller Bearings for smooth, low-friction rotation. This robust construction allows the housing to manage the significant mechanical loads encountered in heavy-duty hauling and construction operations.
Key features of the Sitrak Wheel Hub Gearbox Housing Assembly include integrated oil management systems, such as a Planet Carrier Oil Deflector, which helps maintain proper lubrication flow to the gears and bearings. The housing is designed to be sealed against the wheel hub and axle components, preventing lubricant leaks and ingress of contaminants. By providing a stable and protected environment for the gear reduction process, this assembly reduces wear on internal parts, minimizes maintenance needs, and extends the service life of the entire wheel-end system, contributing to lower total operating costs.
In summary, the Sitrak Wheel Hub Gearbox Housing Assembly is an essential component that enables the functionality of the wheel-end planetary reduction system. Its precision engineering ensures reliable torque multiplication, which is crucial for improving a truck’s starting traction, hill-climbing ability, and overall fuel efficiency under load. Compatible with specific Sinotruk axle models, this assembly is a vital part for fleet maintenance, offering a direct replacement that restores original equipment performance and reliability for continued operation in demanding transport sectors.
| No. | Part Number | Part Name English | Quantity |
|---|---|---|---|
| 1 | 190003330148 | Steel Ball — 8.0000 G200 b-GB308 | 5 |
| 2 | 190003901704 | Cylindrical Pin | 5 |
| 3 | Q151C1295TF2 | Hexagon Head Bolt | 5 |
| 4 | WG9012340122 | Planet Gear (Z=16) | 5 |
| 5 | WG99-934-013 | Needle Roller Bearing Supply Drawing | 10 |
| 6 | WG9012340004 | Planet Gear Axle | 5 |
| 7 | WG9012340075 | Planet Gear Washer | 10 |
| 8 | WG9012340077 | Washer | 5 |
| 9 | AZ7121345029 | Planet Carrier Assembly | 1 |
| 10 | WG880420027 | Planet Carrier Oil Deflector | 1 |
Our Sitrak Wheel Hub Gearbox Housing Assembly is manufactured to exact Sinotruk OEM specifications, ensuring perfect compatibility and performance for your vehicle’s planetary reduction system. We utilize high-grade materials, including durable castings and precision-machined components, that undergo stringent quality checks for dimensional accuracy, material integrity, and fatigue resistance. This commitment to quality ensures the assembly can handle the high torque and repetitive stress of heavy-duty operations, providing reliable service and reducing the risk of premature failure that could lead to costly downtime.
We offer exceptional value by providing the Sitrak Wheel Hub Gearbox Housing Assembly as a complete kit, containing all the internal components listed in the parameters table—from the Planet Carrier and Gears (Z=16) to the necessary bolts, pins, washers, and bearings. This comprehensiveness saves you significant time and effort in sourcing individual parts, guarantees component compatibility, and simplifies the repair or refurbishment process. Our competitive pricing, coupled with reliable warranty support, makes this assembly a cost-effective solution for maintaining your fleet’s performance and safety standards.
Our product is engineered for durability and optimal lubrication management. Features like the included Planet Carrier Oil Deflector ensure that gears and needle roller bearings receive adequate lubrication, reducing friction, wear, and operating temperatures. The robust housing design effectively seals out contaminants, protecting the sensitive planetary gear train. By choosing our assembly, you enhance the longevity of your wheel-end system, achieve more consistent torque delivery, and benefit from improved fuel efficiency and reduced maintenance frequency over the long term.
Choosing our Sitrak Wheel Hub Gearbox Housing Assembly means partnering with a supplier dedicated to customer support and logistical efficiency. We provide detailed technical documentation and are backed by a global distribution network for timely delivery. Our continuous product development incorporates field feedback to enhance design and material choices. This focus on innovation and service ensures you receive a superior product that restores your Sinotruk truck’s original performance, supports operational uptime, and represents a smart investment in quality Sinotruk parts for your heavy-duty transportation needs.
If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.
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