Shacman Truck Gearbox Main Shaft Reduction Gear OEM 19726 For Heavy Duty Transmission | OEM Quality | Xmllauto

We supply high-quality Truck Gearbox Main Shaft Reduction Gear OEM 19726 for Shacman X3000/M3000/F3000/H3000/L3000/X5000 Truck Parts Models. For more than 20 years, we have been dedicated to the field of spare parts for heavy trucks of Shaanxi Automobile, Sinotruk, FAW Jiefang, Auman, and North Benz series. Our products cover most markets in Europe, North America, Central and South America, the Middle East, Africa, and Asia. We look forward to becoming your long-term partner in China.

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The Main Shaft Reduction Gear (Part No. 19726) is a pivotal component in the secondary countershaft system of heavy-duty truck transmissions. Its primary function is to achieve the necessary gear ratio reduction, effectively multiplying engine torque to move heavy loads while maintaining rotational stability.

At xmllauto, we recognize that the gear 19726 must withstand immense shear stress during frequent gear shifts and high-load climbs. Therefore, our production process integrates modern metallurgical science with precision engineering. We use 20CrMnTi alloy steel, which undergoes a controlled-atmosphere carburizing and quenching cycle. This creates a "hard shell, tough core" structure, allowing the gear to absorb shock loads while resisting abrasive wear. By choosing xmllauto parts, fleet operators can ensure their Shacman trucks maintain peak transmission efficiency, reducing power loss and optimizing fuel consumption across thousands of kilometers.

1,Compact & Optimized Design

The 19726 gear features an optimized tooth profile design that maximizes contact area. This compact geometry allows for high power density, fitting perfectly into the modular housing of modern Fast Gear transmissions used by Shacman.

2,Precise Rotation & Monitoring

Our gears are manufactured to strict concentricity tolerances (within 0.02mm). This precision ensures consistent rotation speeds, facilitating accurate speed sensor readings and preventing "gear hunting" or synchronization issues in automated and manual boxes alike.

3,Durability Under Extreme Load

Considering the harsh environments of mining and long-haul logistics, we use a specialized shot-peening treatment. This increases the compressive residual stress on the tooth roots, enhancing the fatigue life of the gear by over 30% compared to standard aftermarket parts.

4,Ease of Maintenance

xmllauto follows strict OEM dimensional standards. The 19726 reduction gear is a "Plug-and-Play" replacement, requiring no additional shimming or modification during gearbox overhauls, which minimizes labor costs and downtime.

The Main Shaft Reduction Gear 19726 is essential for heavy-duty vocational and transport sectors:

• Logistics & Transport: Shacman X3000/X5000 tractors for cross-border haulage;
• Construction & Infrastructure: Shacman F3000/M3000 dump trucks and concrete mixers;
• Mining Operations: Heavy-duty off-road Shacman mining trucks requiring high low-end torque;
• Engineering Machinery: Special purpose vehicles utilizing Fast Gear power take-off (PTO) systems.

1,15 Years of Technical Authority: We are not just a supplier; we are technical experts who understand the failure modes of Shacman transmissions and how to prevent them.

2,Full-Process Quality Control: From raw material spectral analysis to final coordinate measuring machine (CMM) testing, we track every gear via a unique batch code.

3,Enhanced Material Grade: While others use standard carbon steel, xmllauto insists on premium 20CrMnTi, specifically chosen for its excellent hardenability and impact resistance.

4,Superior Compatibility: Our parts are engineered to match the exact tooth helix angle and pressure angle of original Shacman/Fast Gear components.

5,Global Delivery Efficiency: We maintain a large inventory in our specialized warehouse, enabling 3-7 day rapid dispatch to major global logistics hubs.

6,Customization Ready: We offer OEM/ODM services for specialized fleet requirements, including custom surface coatings for high-humidity or high-salinity environments.

 

Our factory & PACKAGINIG

 

Q1: Does the 19726 gear fit both 10-speed and 12-speed Fast Gearboxes? A: The 19726 is a specific reduction gear. While it is widely used in the 12JSD series, we highly recommend providing your gearbox nameplate to our engineers to confirm the exact tooth count and helix direction for your specific model.

Q2: How does xmllauto prevent gear noise (whining)? A: Gear noise is often caused by tooth profile errors. We use high-precision gear grinding machines after heat treatment to correct any thermal deformation, ensuring Grade 6 accuracy for silent operation.

Q3: What is the expected service life of this reduction gear? A: Under standard maintenance and proper lubrication, the xmllauto 19726 gear is designed to match the lifespan of the gearbox, typically exceeding 500,000 km in long-haul applications.

Q4: Is the material 20CrMnTi better than 40Cr for gearbox gears? A: Absolutely. 20CrMnTi is a carburizing steel specifically for high-load gears. It offers a much higher surface hardness while maintaining a flexible core, which is essential for resisting the impact loads found in truck transmissions.

Q5: Can you provide a certificate of analysis (COA) for the material? A: Yes, for bulk orders, we provide full material certifications and heat treatment reports to verify the chemical composition and hardness levels.

Q6: What is the most common cause of failure for the 19726 gear? A: Most failures result from low oil levels leading to overheating or "shock loading" from improper clutch usage. Our gears are reinforced at the tooth root to provide an extra margin of safety against such events.

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