Product Introduction

This deep groove ball bearing is a critical component for enabling smooth, low-friction rotation in heavy-duty vehicle drivetrain systems.

• Structure & Material: Constructed from high-strength chrome bearing steel, with a precision-machined inner and outer race, hardened steel balls, and a cage. It is designed to handle high radial loads and moderate axial loads.

• Performance: The deep groove design and high-quality steel construction ensure 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. Radial Load Support: Provides low-friction support for rotating shafts, 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 6218 AZ9003326218 – SINOTRUK HW Series Gearbox

When your SINOTRUK HW series gearbox demands a reliable rolling bearing that keeps heavy-duty transmissions running smoothly, the Rolling Bearing 6218 AZ9003326218 delivers uncompromising performance. Engineered specifically for SINOTRUK HOWO heavy trucks, this precision-crafted gearbox bearing reduces friction, handles extreme loads, and extends transmission service life — all at a factory-direct price that protects your wholesale margins.

At Mettlead, we supply genuine-quality SINOTRUK gearbox parts directly from China’s manufacturing base. As a result, distributors and wholesale agents around the world trust us to deliver the exact specifications their customers need, without the middleman markup.

Key Features and Benefits of Rolling Bearing 6218 AZ9003326218

This isn’t just another bearing sitting on a shelf. The 6218 rolling bearing is purpose-built for the demanding environment inside SINOTRUK HW gearboxes, where torque loads are immense and reliability is non-negotiable. Here’s what sets it apart:

• Precision-Ground Raceways: Manufactured to tight tolerances, these raceways ensure smooth rotation and minimal vibration, which ultimately prolongs the entire gearbox assembly’s lifespan.
• High Load Capacity: Designed to withstand both radial and axial loads typical of heavy-duty truck transmissions, so your end customers experience fewer breakdowns on the road.
• Heat-Resistant Materials: The bearing operates reliably under elevated gearbox temperatures, maintaining dimensional stability even during prolonged highway operation.
• Direct OEM Replacement: Part number AZ9003326218 ensures a perfect drop-in fit — no modifications, no guesswork, no costly installation delays.
• Corrosion-Resistant Finish: A protective surface treatment guards against moisture and contaminants that can infiltrate gearbox housings in harsh working environments.
• Wholesale-Friendly Pricing: Because we source directly from certified factories in China, you gain competitive cost advantages that translate into healthier profit margins for your distribution business.

In other words, when you stock the Rolling Bearing 6218 AZ9003326218 for SINOTRUK HW series gearbox, you’re offering your customers a component that keeps their trucks moving and keeps them coming back to you for more.

Technical Specifications

Accuracy matters in the heavy truck parts business. Below, you’ll find the detailed parameters for this SINOTRUK HW gearbox rolling bearing, so you can confidently match it to your customer’s requirements:

Application Scenarios: Where This Bearing Works

The Rolling Bearing 6218 AZ9003326218 is specifically designed to serve as a critical component inside the SINOTRUK HW series gearbox assembly. More specifically, it fits the following applications:

• Compatible Gearbox Models: SINOTRUK HW15710, HW19710, HW15712, HW19712, and related HW series manual transmissions.
• Compatible Truck Models: SINOTRUK HOWO A7, HOWO T7H, SITRAK C7H, and other heavy-duty models equipped with HW series gearboxes.
• Function: Supports the transmission shaft within the gearbox housing, absorbing radial loads during gear engagement and ensuring smooth power transfer from engine to drive axle.
• Working Conditions: High-torque environments, long-distance highway transport, construction site hauling, and mining logistics operations.

Whether your customers are running a fleet of HOWO dump trucks across African mining roads or operating SITRAK tractor units along Middle Eastern highways, this bearing is built to handle the punishment. For more gearbox components that complement this bearing, browse our complete gearbox parts category or visit our dedicated SINOTRUK HOWO gearbox parts page.

OEM/ODM Capabilities and Wholesale Support

As a wholesale agent, you need a supply partner who adapts to your business — not the other way around. At Mettlead, we offer flexible options that make it easier for you to grow:

• White-Label Packaging: Want to build your own brand identity? We provide custom packaging with your logo, part numbers, and branding, so the Rolling Bearing 6218 AZ9003326218 arrives looking like it came from your warehouse.
• Custom Packaging Solutions: Whether you need individual retail boxes or bulk industrial packaging for large orders, we accommodate your requirements.
• Strict Quality Control: Every bearing undergoes dimensional inspection, hardness testing, and surface quality checks before leaving our facility. Consequently, defective rate stays well below industry norms.
• Flexible MOQ: We work with both small trial orders and large container shipments, helping you test the market before committing to volume.
• Secure Payment Methods: Choose from T/T, L/C, Western Union, or other internationally recognized payment channels for worry-free transactions.
• Factory Visits Welcome: We encourage serious partners to visit our supply base in China and see our quality process firsthand.

Furthermore, you’ll find our full SINOTRUK parts catalog on the SINOTRUK HOWO truck parts brand page, covering everything from engine components to chassis accessories.

Customer Case Study: Rolling Bearing 6218 AZ9003326218 in Action

Earlier this year, a truck parts distributor based in Nigeria reached out to Mettlead looking for a reliable source of SINOTRUK HW series gearbox bearings. Their local fleet operators had been experiencing premature gearbox bearing failures, which led to costly downtime and unhappy truck owners.

After reviewing their requirements, we supplied an initial order of 200 pieces of the Rolling Bearing 6218 AZ9003326218 with white-label packaging under their brand name. The results spoke for themselves: within three months, their customer return rate for gearbox-related complaints dropped by over 40%. Their end users reported noticeably smoother gear shifts and longer intervals between gearbox maintenance.

Impressed by both the product quality and our competitive pricing structure, this distributor has since placed four repeat orders and expanded their catalog to include additional SINOTRUK HW gearbox components from our range. Today, they consider Mettlead their primary supply partner for Chinese heavy truck parts across West Africa.

This is exactly the kind of partnership we build — one where quality products lead to repeat business and growing margins for our wholesale clients.

Frequently Asked Questions (FAQ)

What type of bearing is the 6218 AZ9003326218?

The 6218 AZ9003326218 is a deep groove ball bearing with an inner diameter of 90 mm, an outer diameter of 160 mm, and a width of 30 mm. It’s manufactured from high-carbon chromium steel (GCr15) and hardened to HRC 61–65, which provides excellent wear resistance and fatigue life in heavy-duty gearbox applications.

Which SINOTRUK gearbox models does this rolling bearing fit?

This bearing is designed as a direct-fit replacement for SINOTRUK HW series gearboxes, including the HW15710, HW19710, HW15712, and HW19712 models commonly found in HOWO and SITRAK heavy trucks. Always verify the OEM part number AZ9003326218 against your gearbox nameplate to confirm compatibility.

How can I tell if my gearbox bearing needs replacement?

Common signs of a failing Rolling Bearing 6218 in an HW gearbox include unusual whining or grinding noise during gear changes, excessive gear lever vibration, difficulty engaging certain gears, and elevated gearbox operating temperatures. If your end users report any of these symptoms, the bearing should be inspected promptly to prevent cascading damage to other transmission components.

Is this bearing sold as an open or sealed type?

By default, we supply the open-type configuration, which is the standard specification used in SINOTRUK HW gearboxes. However, if your application requires shielded (ZZ) or sealed (2RS) variants, simply let us know during the inquiry process — we can source the appropriate configuration based on your needs.

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

Under standard operating conditions — proper lubrication, normal load spectrum, and correct installation — the Rolling Bearing 6218 AZ9003326218 typically delivers a service life aligned with scheduled gearbox overhaul intervals (approximately 200,000–300,000 km, depending on usage severity). Harsh environments or overloaded trucks may shorten this interval, so proper lubrication maintenance is essential.

Can I order a sample before committing to bulk?

Absolutely. We understand that verifying fit, finish, and quality is important before making large commitments. We offer sample orders with reasonable minimum quantities so you can test the Rolling Bearing 6218 AZ9003326218 in real-world conditions before scaling up.

Ready to Secure Your Supply of Rolling Bearing 6218 AZ9003326218?

Your customers can’t afford gearbox downtime, and you can’t afford unreliable suppliers. Let’s solve both problems at once.

Whether you need 50 pieces or 5,000, Mettlead delivers the Rolling Bearing 6218 AZ9003326218 for SINOTRUK HW series gearbox with factory-direct pricing, verified quality, and fast international shipping. Our team is standing by to provide a tailored quote based on your volume, packaging preferences, and delivery timeline.

Contact us today to request pricing, check stock availability, or discuss white-label packaging options. Let’s build a partnership that keeps your inventory strong and your margins healthy.