Product Introduction

• Structure: Precision-forged high-strength alloy steel (20CrMnTi) cone hub with internal splines for main shaft connection, external cone surface for synchronizer ring engagement, and phosphate anti-corrosion finish. Integrated with synchronizer key slots and spring retainers for complete assembly.

• Key Specifications:

• Material: 20CrMnTi carburized steel

• Surface treatment: Carburizing + quenching (HRC 58–62) + phosphate coating

• Spline type: Internal involute spline (main shaft fit)

• Cone angle: Standard high-range synchronizer cone angle

• Operating temperature: -40°C to +150°C

  • Performance: High wear resistance on cone surface; precise spline fit for zero backlash; robust construction withstands high torque and shifting forces; phosphate coating prevents rust and extends service life.

Core Function

1. Synchronizer Engagement: Provides the friction cone surface for the high-range synchronizer ring, enabling smooth, clash-free high-range gear engagement.

2. Torque Transmission: Transmits high-range gear torque from the synchronizer assembly to the transmission main shaft via internal splines.

3. Positioning & Guidance: Locates the high-range synchronizer components and maintains axial alignment during range shifting.

High Gear Cone Hub Assy AZ2203100006 – SINOTRUK HW Series Gearbox Parts

When your SINOTRUK HW series gearbox demands reliable shifting performance at high speed, the High Gear Cone Hub Assy AZ2203100006 plays a mission-critical role. This precision-engineered synchronizer component ensures smooth gear engagement, reduces transmission wear, and keeps your heavy-duty trucks running without costly downtime. Sourced directly from our factory in China, this genuine-spec cone hub assembly delivers OEM-level quality at a competitive price that procurement managers appreciate.

At Mettlead, we specialize in supplying original and aftermarket parts for SINOTRUK, HOWO, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON trucks to customers worldwide. With strict quality control, fast delivery, and factory-direct pricing, we make it easy for you to keep your fleet on the road. Browse our full range of SINOTRUK HOWO truck parts or explore our dedicated gearbox parts category for more components.

Key Features and Benefits of High Gear Cone Hub Assy AZ2203100006

Every component in the SINOTRUK HW series gearbox must withstand extreme torque and high rotational speeds. Here is why this high gear cone hub assembly stands out from generic alternatives:

• Precise Synchronization: The cone hub assembly facilitates smooth engagement between high-range gears, minimizing grinding and protecting internal gear teeth from premature wear.
• Premium Material Composition: Manufactured from high-strength alloy steel with heat treatment, this part resists fatigue cracking even under continuous heavy-load operations.
• OEM-Spec Dimensional Accuracy: Machined to exact tolerances matching the original AZ2203100006 specification, ensuring perfect fitment without modifications.
• Extended Service Life: The hardened friction surfaces and optimized spline profile significantly extend replacement intervals, reducing your total cost of ownership.
• Direct Factory Pricing: By sourcing directly from Mettlead, you eliminate middlemen markups while maintaining quality that meets or exceeds OEM standards.
• Ready Stock Availability: As a high-demand gearbox component, we maintain consistent inventory levels to support urgent procurement needs.

In other words, choosing this cone hub assembly means fewer unplanned maintenance stops, smoother driving experience for operators, and a healthier bottom line for fleet managers.

Technical Specifications – AZ2203100006 High Gear Cone Hub Assy

Accurate specifications matter when you are matching parts to your gearbox model. The following table outlines the core parameters of this SINOTRUK HW series high gear cone hub assembly:

If you need a complete breakdown of compatible gearbox models or cross-reference numbers, feel free to contact us directly. Our technical team is ready to verify fitment for your specific truck configuration.

Application Scenarios – Where Does This Cone Hub Assembly Fit?

The High Gear Cone Hub Assy AZ2203100006 is designed specifically for the SINOTRUK HW series manual transmission, which is widely installed across a variety of heavy-duty vehicles. Here are the most common applications:

• SINOTRUK HOWO A7 / T7H Tractor Trucks: Long-haul logistics operators rely on HW series gearboxes for highway cruising. The high gear cone hub directly supports top-gear synchronization during sustained high-speed driving.
• SINOTRUK SITRAK C7H Heavy-Duty Trucks: Whether hauling containers or bulk materials, the SITRAK platform uses HW transmissions where this cone hub assembly ensures reliable shifting under heavy payload conditions.
• HOWO Dump Trucks and Mixer Trucks: Construction and mining environments demand frequent gear changes. A worn cone hub causes grinding and accelerates gear damage — making timely replacement essential.
• SINOTRUK Cargo Trucks with HW19710 Gearbox: Standard freight vehicles operating on varied terrain benefit from the smooth high-gear engagement that a properly functioning cone hub assembly provides.

For a broader selection of SINOTRUK gearbox components, visit our SINOTRUK HOWO gearbox parts page, where you will find synchronizer rings, output shafts, bearings, and more.

OEM/ODM Capability – Flexible Solutions for Your Business

As a procurement manager, you may need more than just a standard replacement part. Mettlead offers flexible manufacturing and packaging solutions tailored to your market requirements:

• White-Label Packaging: We supply the High Gear Cone Hub Assy AZ2203100006 in neutral packaging, ready for you to brand as your own. This is ideal for distributors building their private-label aftermarket lines.
• Custom Packaging: Want your company logo, part number system, or unique barcode on every box? Our packaging team handles it all — from design to production.
• Strict Quality Control: Every batch undergoes dimensional inspection, hardness testing, and surface finish verification before shipment. We document results so you can share quality certificates with your end customers.
• Bulk Order Support: Whether you need 50 pieces or 5,000, our production capacity scales with your demand. Lead times remain competitive thanks to established supplier relationships and streamlined workflows.
• Factory Visits Welcome: We encourage prospective partners to visit our facilities in China. Seeing our QC processes and inventory firsthand builds the kind of trust that sustains long-term business relationships.

Customer Case Study – AZ2203100006 High Gear Cone Hub Assy in Action

A fleet maintenance company based in East Africa was managing over 120 SINOTRUK HOWO tractor trucks serving cross-border logistics routes. Their drivers frequently reported difficulty engaging high gear, particularly after 300,000 km of service. Upon inspection, worn high gear cone hub assemblies were identified as the root cause across multiple vehicles.

The company’s procurement manager reached out to Mettlead looking for a reliable source of High Gear Cone Hub Assy AZ2203100006 in bulk. After receiving samples and verifying dimensional accuracy against OEM specifications, they placed an initial order of 200 units. The parts were delivered within 15 days via sea freight with custom-branded packaging bearing their company logo.

Within three months of installation, the fleet reported zero recurring complaints about high-gear engagement. The maintenance manager noted that the replacement cone hub assemblies performed identically to original SINOTRUK parts, yet at roughly 30% lower cost. This partnership has since expanded to include other SINOTRUK HW series gearbox parts such as synchronizer rings, shift forks, and output shaft assemblies.

This is exactly the kind of outcome we aim to deliver for every customer — quality parts, competitive pricing, and the peace of mind that comes from a dependable supply chain.

Frequently Asked Questions – High Gear Cone Hub Assy AZ2203100006

What is the function of the High Gear Cone Hub Assy in a SINOTRUK HW gearbox?

The high gear cone hub assembly acts as the synchronizer hub for the top-gear group in the HW series transmission. It sits on the mainshaft and uses friction between the cone surfaces and synchronizer ring to equalize shaft speeds before gear engagement. Without a properly functioning cone hub, drivers experience grinding, difficult shifting, and accelerated wear on the gear dog teeth. Essentially, it is the component that makes high-gear shifts feel smooth and effortless.

How do I confirm that AZ2203100006 fits my specific gearbox model?

The part number AZ2203100006 is the standard SINOTRUK designation for the high gear cone hub assembly used in HW15710, HW19710, and HW25716 gearbox variants. However, transmission configurations can vary depending on production year and vehicle model. We recommend sending us your gearbox nameplate photo or VIN number, and our engineers will cross-reference compatibility within 24 hours. Simply reach out through our contact page.

What are the common symptoms of a worn high gear cone hub assembly?

The most obvious sign is difficulty shifting into high gear, especially when the transmission is under load. You may also notice grinding noises during gear engagement, increased shift effort, or the gear popping out of engagement during deceleration. In more advanced cases, metal debris from the worn hub contaminates the gearbox oil, which can damage other internal components. Early replacement saves significant repair costs down the line.

Is this cone hub assembly an OEM original or aftermarket part?

Mettlead supplies OEM-equivalent aftermarket parts manufactured to the same dimensional and material specifications as the original SINOTRUK component. Each unit passes our strict quality control process, including hardness testing and tolerance verification. The result is a part that performs identically to the OEM original at a more competitive price point — ideal for fleet operators and distributors who need both quality and value.

What is the typical service life of the AZ2203100006 cone hub assembly?

Under normal operating conditions with proper gearbox oil maintenance, the high gear cone hub assembly typically lasts between 250,000 and 400,000 km. However, factors like driving habits, load conditions, oil change intervals, and road quality influence actual lifespan. Trucks operating in mining or construction environments tend to see accelerated wear compared to highway logistics vehicles.

Can I order a small quantity for testing before committing to bulk?

Absolutely. We understand that verifying part quality before a large purchase is important — especially when establishing a new supplier relationship. We are happy to arrange sample orders of the High Gear Cone Hub Assy AZ2203100006 so you can inspect dimensions, material quality, and fitment before scaling up. Just let us know your requirements.

Ready to Source Your High Gear Cone Hub Assy AZ2203100006?

Getting started is simple. Whether you need a quick quote, technical verification, or a sample shipment, our team responds within 12 hours on business days. Here is what you can expect when working with Mettlead:

1. Fast Quotation: Send us your part number and quantity — we reply with pricing, lead time, and shipping options.
2. Flexible Payment: We support T/T, L/C, Western Union, and other secure payment methods to suit your procurement process.
3. Reliable Delivery: Express, air freight, and sea freight options keep your supply chain moving on schedule.
4. After-Sales Support: Any quality concerns? Our team handles claims professionally and promptly.

Stop losing time to unreliable suppliers and inconsistent part quality. Contact us today to request your quote for the High Gear Cone Hub Assy AZ2203100006 and discover why fleet operators across Africa, Southeast Asia, and the Middle East trust Mettlead as their go-to source for SINOTRUK HOWO truck parts.