Product Introduction

This planetary pinion gear is a precision-machined component, manufactured from high-strength alloy steel through a process of precision forging, carburizing heat treatment, and multi-stage grinding. It features a robust, cylindrical design with external spur gear teeth for meshing with the sun gear and ring gear, and a central bore for mounting on the planetary carrier. The gear undergoes strict quality control, including dimensional inspection and surface hardness testing, to meet OE specifications for heavy-duty operation. Its optimized tooth profile and precision machining ensure smooth meshing, minimal noise, and maximum power transmission efficiency.

Core Function

• Meshes with the sun gear and ring gear in the wheel-end planetary reduction assembly, transferring torque and achieving the final stage of speed reduction and torque increase.

• Rotates around the sun gear while orbiting within the ring gear, enabling the planetary reduction mechanism to deliver the required low-speed, high-torque output to the wheel hub.

• Maintains precise alignment within the planetary carrier, ensuring smooth and efficient power transmission and minimizing wear on the gear set.

• Withstands the high torque loads and dynamic stresses generated during heavy-duty operation, providing reliable performance and extended service life.

• Directly interchangeable with the original factory part, ensuring a precise fit and consistent performance within the wheel-end planetary reduction assembly.

Planetary Gear 199012340122 for Sinotruk HOWO Heavy-Duty Trucks

When your Sinotruk heavy-duty truck demands reliable torque multiplication and smooth power delivery, the Planetary Gear 199012340122 stands as a critical component you simply cannot compromise on. Engineered specifically for Sinotruk HOWO rear axle assemblies, this planetary gear works in harmony with the gear set to achieve speed reduction and torque amplification — keeping your fleet running efficiently under the heaviest loads. At Mettlead, we supply this genuine-spec planetary gear directly from our quality-controlled production lines in China, which means you get OEM-grade performance without the inflated middleman pricing.

Key Features and Benefits of Planetary Gear 199012340122

Choosing the right planetary gear is not just about fitment — it is about ensuring long-term drivetrain reliability. Here is what makes this particular component a smart investment for your fleet:

• Precision-Machined Tooth Profile: Each gear tooth is carefully machined to ensure optimal meshing with the ring gear and sun gear, resulting in smoother power transmission and reduced noise during operation.
• High-Grade Alloy Steel Construction: Manufactured from heat-treated alloy steel, this planetary gear delivers exceptional wear resistance and fatigue strength — even under continuous heavy-load conditions.
• OEM-Spec Dimensional Accuracy: The part number 199012340122 guarantees a direct drop-in replacement for your Sinotruk HOWO rear axle, eliminating guesswork during installation.
• Optimized Load Distribution: As part of the planetary gear set, this component distributes torque evenly across multiple gear teeth simultaneously, which significantly extends the service life of the entire rear axle assembly.
• Factory-Direct Pricing: Because we source and supply directly from manufacturing facilities, you benefit from competitive bulk pricing without sacrificing quality assurance.
• Strict Quality Control: Every Planetary Gear 199012340122 undergoes rigorous dimensional inspection and hardness testing before it leaves our warehouse.

Application Scenario: Where This Planetary Gear Performs

The Planetary Gear 199012340122 is specifically designed for the rear axle planetary gear assembly of Sinotruk heavy-duty vehicles. Within this system, it collaborates with the sun gear, ring gear, and carrier to form a complete planetary gear set. Together, these components achieve speed reduction and torque amplification — a critical function that allows the truck’s drive wheels to deliver maximum pulling force at controlled rotational speeds.

In practical terms, this means your Sinotruk HOWO truck can haul heavy payloads up steep gradients, navigate demanding construction sites, and maintain consistent traction across long-haul routes. Whether your vehicles operate in mining, logistics, or infrastructure projects, this planetary gear ensures the rear axle performs exactly as the engineers intended.

Compatible Vehicles: Sinotruk HOWO series heavy-duty trucks equipped with standard rear axle assemblies using part number 199012340122.

Technical Specifications

For a complete range of rear axle components, feel free to browse our Rear Axle Parts Category page.

OEM/ODM Capability

At Mettlead, we understand that different markets have different requirements. That is precisely why we offer flexible OEM and ODM services for the Planetary Gear 199012340122 and other Sinotruk drivetrain components:

• White-Label Packaging: Need to sell under your own brand? We provide neutral or fully customized packaging with your logo, part numbers, and branding elements — ready for your local market.
• Custom Specifications: If your application requires slight modifications to material grade, surface treatment, or dimensional tolerances, our engineering team can accommodate custom production runs.
• Bulk Order Flexibility: Whether you need 50 pieces or 5,000, our production capacity scales to meet your procurement schedule without compromising lead times.
• Quality Documentation: We provide full inspection reports, material certificates, and hardness test results upon request — giving you the documentation your end customers expect.

Explore our full lineup of Sinotruk components on the Sinotruk HOWO Truck Parts brand page, or visit our Sinotruk Truck Parts comprehensive catalog for even more options.

Frequently Asked Questions About Planetary Gear 199012340122

What is the function of Planetary Gear 199012340122 in a Sinotruk rear axle?

The Planetary Gear 199012340122 is a core component within the rear axle’s planetary gear set. It meshes with the sun gear and ring gear to achieve speed reduction while simultaneously multiplying torque output. In simpler terms, it converts the driveshaft’s high-speed rotation into the slower, more powerful rotation your drive wheels need to move heavy loads.

How do I confirm that Planetary Gear 199012340122 fits my specific truck model?

The most reliable method is to cross-reference the OEM part number 199012340122 with your vehicle’s rear axle assembly documentation. This part is designed for Sinotruk HOWO heavy-duty trucks with standard planetary rear axle configurations. If you are unsure about compatibility, simply send us your VIN or axle model number and our technical team will verify fitment for you.

What material is this planetary gear made from, and how does that affect durability?

This planetary gear is manufactured from high-grade alloy steel that undergoes carburizing and quenching heat treatment. The result is a hardened tooth surface (HRC 58–62) that resists wear and pitting, while the core remains tough enough to absorb shock loads. This combination is essential for components that endure constant cyclic loading in heavy-duty applications.

Can I order Planetary Gear 199012340122 in small quantities for testing?

Absolutely. We understand that procurement managers often need sample quantities before committing to bulk orders. Mettlead supports flexible order quantities — from small test batches to large-volume procurement — so you can validate quality before scaling up.

What are common signs that a planetary gear needs replacement?

Watch for unusual whining or grinding noises from the rear axle, especially under load. Excessive vibration through the drivetrain, metal particles in the axle oil, or visible tooth wear and pitting during inspection are all indicators that the planetary gear has reached the end of its service life. Replacing it promptly prevents cascading damage to the ring gear, sun gear, and carrier bearings.

Does Mettlead provide quality inspection reports with this planetary gear?

Yes. Every batch of Planetary Gear 199012340122 is inspected for dimensional accuracy, tooth profile geometry, and surface hardness. We can provide detailed inspection reports and material certificates upon request — particularly useful if your organization requires incoming quality documentation.

Ready to Secure Your Supply of Planetary Gear 199012340122?

Your fleet’s uptime depends on having the right parts available when you need them. As a dedicated supplier of Sinotruk HOWO truck parts, Mettlead delivers factory-direct pricing, strict quality control, and reliable global shipping — all backed by a team that understands heavy-duty truck components inside and out.

Take the next step today:

• Request a competitive quote for Planetary Gear 199012340122
• Ask about bulk pricing and lead times for your market
• Inquire about custom packaging or white-label options

Contact Us Now to speak with our parts specialists and get your order moving. We respond to all inquiries within 24 hours — because we know that in the trucking business, every day counts.