Product Introduction

This heavy-duty deep groove ball bearing is a robust component designed to handle the high loads and vibration of heavy-duty vehicle drivetrains.

• Structure & Material: Constructed from high-strength chrome bearing steel, with a wide-profile inner and outer race, large hardened steel balls, and a cage. It is optimized for high load capacity and durability.

• Performance: The deep groove design ensures low friction, high rotational accuracy, and resistance to wear and fatigue. It is lubricated for life, requiring no maintenance under normal operating conditions.

• Durability: The bearing steel and precision manufacturing ensure long service life even under high vibration and temperature fluctuations.

• Compatibility: Direct OE replacement, fully matching the dimensional and load-bearing specifications of Sinotruk heavy-duty vehicle drivetrain components.

Core Function

1. High Load Support: Provides low-friction support for rotating shafts under high radial and moderate axial loads, reducing wear and enabling efficient power transmission.

2. Smooth Rotation: The precision-machined races and balls ensure consistent, vibration-free rotation, contributing to a smooth driving experience.

3. Long-Term Reliability: The hardened steel construction and sealed design (where applicable) ensure reliable performance over long service intervals.

Rolling Bearing AZ9003326322 SINOTRUK HW Series Gearbox – Premium Quality, Factory Direct Price

When your SINOTRUK HW series gearbox demands reliable performance under extreme loads, every single component matters — especially the rolling bearing. The Rolling Bearing AZ9003326322 is a precision-engineered transmission component designed to keep your heavy-duty trucks running smoothly, shift after shift. At Mettlead, we supply this genuine-spec bearing directly from our factory in China, which means you get uncompromised quality at a price that respects your bottom line.

Whether you are managing a fleet of HOWO trucks in Africa, maintaining SITRAK vehicles in Southeast Asia, or sourcing gearbox parts for your workshop in the Middle East, this rolling bearing delivers the durability and precision your operations depend on. Let us walk you through everything you need to know.

Key Features and Benefits of Rolling Bearing AZ9003326322

This is not just another bearing sitting on a shelf. The Rolling Bearing AZ9003326322 is purpose-built for the demanding environment inside a SINOTRUK HW series gearbox. Here is what sets it apart:

• Precision-Ground Raceways: Ensures smooth rotational movement and minimizes friction loss inside the gearbox, extending the service life of the entire transmission system.
• High Load Capacity: Engineered to handle the heavy radial and axial loads typical in heavy-duty truck transmissions, reducing the risk of premature failure.
• Heat-Resistant Materials: Built to perform consistently even under the elevated temperatures generated during long-haul operations and continuous gear shifting.
• Exact OEM Fitment: Manufactured to match the original equipment dimensions of part number AZ9003326322, so installation is seamless — no modifications needed.
• Corrosion-Resistant Surface Treatment: Protects the bearing from moisture and contaminants commonly found in transmission fluid over extended service intervals.
• Factory Direct Pricing: Because we cut out the middlemen, you receive a competitive price without sacrificing quality — a clear advantage for procurement managers working within tight budgets.

In other words, choosing this rolling bearing means fewer unplanned maintenance stops, lower total cost of ownership, and a gearbox that shifts the way it was designed to.

Application Scenarios – Where Does Rolling Bearing AZ9003326322 Fit?

Understanding exactly where this bearing belongs helps you make confident purchasing decisions. The Rolling Bearing AZ9003326322 is specifically designed for use in SINOTRUK HW series gearboxes, which are widely installed across multiple heavy-duty truck platforms.

Compatible Vehicles and Gearboxes

• SINOTRUK HOWO A7 / HOWO T7H – equipped with HW19710 / HW19712 series transmissions
• SINOTRUK SITRAK C7H / T7H – utilizing HW gearbox variants
• SINOTRUK HOWO 371 / 375 / 380HP models – featuring standard HW series manual transmissions
• Other SINOTRUK platforms using HW series gearbox assemblies where part number AZ9003326322 is specified

This rolling bearing functions as a critical support element within the gearbox, maintaining shaft alignment, absorbing operational loads, and ensuring gears mesh correctly during every speed transition. If your truck operates in mining, long-haul logistics, construction haulage, or any high-torque application, then this bearing works hard every single kilometer.

Looking for more transmission components? Browse our full range of gearbox parts or explore our dedicated SINOTRUK HOWO gearbox parts collection.

Technical Specifications

For procurement managers and workshop technicians who need the details before placing an order, here is the complete specification breakdown for the Rolling Bearing AZ9003326322:

Note: If you require specific dimensional data (inner diameter, outer diameter, width, dynamic load rating), please contact us with your requirements and our technical team will provide a detailed datasheet.

OEM/ODM Capabilities and Custom Packaging

At Mettlead, we understand that different markets have different needs. That is why we offer flexible OEM and ODM services for the Rolling Bearing AZ9003326322 and our entire range of SINOTRUK gearbox components.

• White-Label Packaging: Want to sell under your own brand? We provide neutral or custom-branded packaging that aligns with your business identity and local market expectations.
• Custom Packaging Solutions: Whether you need individual poly bags, branded boxes, or bulk carton packaging with your logo and part numbers printed — we handle it.
• Strict Quality Control: Every Rolling Bearing AZ9003326322 passes through multi-stage inspection, including dimensional verification, hardness testing, and surface quality checks before it leaves our facility.
• Flexible Order Quantities: Whether you need 50 pieces for a local workshop or 5,000 units for a distribution network, our production capacity adapts to your needs.
• Technical Support: Our team can assist with cross-referencing part numbers, confirming fitment, and recommending complementary gearbox components to help you build comprehensive orders.

We are more than a supplier — we are a manufacturing partner committed to helping your business grow in the Chinese truck parts aftermarket. Explore the full SINOTRUK HOWO truck parts catalog to see our complete product range.

Customer Case Study: Rolling Bearing AZ9003326322 in Action

Earlier this year, a fleet maintenance company based in Nigeria reached out to Mettlead with an urgent challenge. They managed over 120 SINOTRUK HOWO trucks operating on demanding routes between Lagos and Abuja, and were experiencing repeated gearbox bearing failures. Their existing supplier was delivering inconsistent quality, and the resulting downtime was costing them thousands of dollars each month.

After reviewing their requirements, our team recommended the Rolling Bearing AZ9003326322 sourced directly from our quality-controlled production line. We shipped an initial order of 200 pieces with custom packaging featuring the client’s brand name. The delivery arrived within 10 days.

Three months later, the results spoke for themselves. Gearbox-related breakdowns dropped by over 60 percent across their fleet. The client has since placed three additional orders for the Rolling Bearing AZ9003326322 along with other SINOTRUK HOWO gearbox parts, and they now consider Mettlead their primary sourcing partner for Chinese truck components.

“The bearing quality is consistent, pricing is fair, and the Mettlead team responds fast. That is exactly what we need when trucks cannot afford to sit idle.” — Procurement Manager, Lagos-based Fleet Services Company

Frequently Asked Questions (FAQ)

1. What type of bearing is the AZ9003326322, and what function does it serve in the gearbox?

The AZ9003326322 is a radial rolling bearing. Inside the SINOTRUK HW series gearbox, it supports rotating shafts, reduces friction between moving parts, and helps maintain proper gear alignment during operation. Essentially, it is one of the components that allows your transmission to shift smoothly under heavy loads.

2. How do I confirm that Rolling Bearing AZ9003326322 fits my specific truck model?

The most reliable method is to cross-reference the OEM part number AZ9003326322 with your truck’s gearbox assembly diagram or maintenance manual. If you are unsure, simply send us your vehicle model and gearbox type, and our technical team will verify compatibility for you. Feel free to contact us anytime.

3. What is the expected service life of this rolling bearing under normal operating conditions?

Under normal operating conditions — proper lubrication, correct installation, and standard load applications — the Rolling Bearing AZ9003326322 is designed to match or exceed the OEM service interval. Actual lifespan depends on factors such as driving conditions, maintenance frequency, and gearbox oil quality.

4. Is the AZ9003326322 rolling bearing an exact replacement for the original SINOTRUK part?

Yes. This bearing is manufactured to OEM specifications, meaning dimensions, tolerances, and material properties match the original part. It installs directly without any modification to the gearbox housing or shaft.

5. What causes premature failure in gearbox rolling bearings, and how can I prevent it?

The most common causes of premature bearing failure include contaminated or degraded gearbox oil, improper installation (such as using excessive force during fitting), overloading the transmission beyond rated capacity, and insufficient lubrication. To maximize the lifespan of your Rolling Bearing AZ9003326322, always follow recommended oil change intervals, use proper installation tools, and avoid sustained overloading.

6. Can I order this bearing with my own brand packaging?

Absolutely. Mettlead offers white-label and custom packaging options for the Rolling Bearing AZ9003326322. Whether you need your company logo, custom part number labels, or specific box designs, we accommodate your branding needs — even on smaller orders.

Ready to Source Your Rolling Bearing AZ9003326322? Let’s Talk.

You have read the specs. You understand the quality. Now it is time to get your quote. Whether you need a single sample for testing or a bulk shipment for your distribution network, Mettlead makes the ordering process simple, transparent, and fast.

Here is what happens when you reach out:

1. You send us your inquiry with the quantity you need and any packaging preferences.
2. Our team responds within 24 hours with pricing, lead time, and shipping options.
3. We confirm your order, run quality checks, and ship directly to your door.

No games, no hidden fees — just reliable Chinese truck parts delivered with precision.

Contact us now to request your quote for Rolling Bearing AZ9003326322 and discover why procurement managers across 30+ countries trust Mettlead as their go-to source for SINOTRUK gearbox parts.

You are also welcome to visit our facility in China to inspect production and quality processes firsthand. We believe in full transparency — because strong partnerships are built on trust.