Product Introduction

This thin-section deep groove ball bearing is a compact, high-performance component designed for applications where space is limited but reliable rotation is critical.

• Structure & Material: Constructed from high-strength chrome bearing steel, with a slim-profile inner and outer race, hardened steel balls, and a cage. Its thin-wall design provides high load capacity in a minimal footprint.

• 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. Radial Load Support: Provides low-friction support for rotating shafts in space-constrained areas, reducing wear and enabling efficient power transmission.

2. Compact Design: The thin-section profile fits into tight spaces, making it ideal for use in transmission and axle systems where installation space is limited.

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

Rolling Bearing 61820 AZ9003321820 for SINOTRUK HW Series Gearbox – Factory Direct Supply

Meta Description:

When your customers depend on reliable heavy-duty trucks, every single component inside the gearbox matters. The Rolling Bearing 61820 (OEM: AZ9003321820) is a precision-engineered transmission component designed specifically for the SINOTRUK HW Series Gearbox. At Mettlead, we supply this critical gearbox bearing directly from our factory in China, which means you get competitive wholesale pricing without sacrificing quality. Whether you are stocking inventory for your distribution network or fulfilling urgent orders from fleet operators, this bearing delivers consistent performance under the most demanding conditions.

Key Features and Benefits of Rolling Bearing 61820 AZ9003321820

This isn’t just another bearing on a shelf. The Rolling Bearing 61820 AZ9003321820 is purpose-built for heavy-truck gearbox applications, and here’s why wholesale distributors trust it:

• Precise OEM Fitment: Manufactured to match the exact specifications of original SINOTRUK HW series gearbox bearings, ensuring seamless installation and reliable operation.
• High Load Capacity: Engineered to withstand the extreme radial loads and rotational speeds found in heavy-duty truck transmissions.
• Extended Service Life: Premium-grade steel construction combined with optimized internal geometry reduces friction and heat buildup, which translates to longer intervals between replacements.
• Strict Quality Control: Every batch undergoes rigorous dimensional inspection, hardness testing, and surface finish verification before shipment.
• Competitive Wholesale Pricing: As a factory-direct supplier, we eliminate middlemen so you can maximize your profit margins on every unit sold.
• White-Label and Custom Packaging Available: Build your own brand identity with our flexible packaging solutions tailored for distributors and resellers.

In other words, this bearing helps you offer your customers a dependable gearbox component while protecting your bottom line. That’s a combination worth investing in.

Technical Specifications – Rolling Bearing 61820 AZ9003321820

Accuracy is everything when sourcing gearbox parts. Below you’ll find the detailed parameters for this SINOTRUK HW series gearbox rolling bearing:

Application Scenarios – Where Does This Bearing Fit?

Understanding exactly where the Rolling Bearing 61820 AZ9003321820 sits inside the drivetrain helps you recommend the right part with confidence. This bearing is installed within the SINOTRUK HW series gearbox, serving as a critical support element for shaft rotation inside the transmission assembly.

Compatible vehicles and systems include:

• SINOTRUK HOWO heavy-duty trucks equipped with HW gearbox variants (HW15710, HW19710, etc.)
• SINOTRUK SITRAK series trucks with HW transmission systems
• Other heavy commercial vehicles utilizing the SINOTRUK HW-platform transmission

As a gearbox transmission bearing, the 61820 supports smooth gear shifting, absorbs radial loads from rotating shafts, and maintains alignment precision under continuous operation. Fleet operators replacing worn gearbox bearings during scheduled overhauls frequently require this part in bulk, making it an excellent stock item for any gearbox parts distributor.

You can explore our full range of SINOTRUK HOWO gearbox parts to complement your inventory with related transmission components.

OEM/ODM Capability – Build Your Brand with Confidence

We understand that as a distributor, your brand reputation matters just as much as product quality. That’s exactly why Mettlead offers flexible OEM and ODM services for the Rolling Bearing 61820 AZ9003321820 and across our entire product catalog.

• White-Label Packaging: Receive bearings packed under your own brand name, complete with your logo, part numbers, and design.
• Custom Packaging Solutions: Whether you need individual retail boxes, bulk industrial packaging, or specific labeling for different markets, we adapt to your requirements.
• Quality Assurance Documentation: We provide inspection reports, material certificates, and test records to support your downstream customers’ confidence.
• Flexible MOQ: We work with both emerging distributors and established wholesalers, adjusting minimum order quantities based on partnership scope.

Additionally, our factory welcomes on-site visits. If you want to inspect our production lines and quality control processes firsthand, we are happy to arrange a factory tour at your convenience.

Browse our full catalog of SINOTRUK HOWO truck parts to see what else we can supply for your business.

Customer Case Study – Rolling Bearing 61820 AZ9003321820 in Action

Earlier this year, a truck parts distributor based in East Africa reached out to us with a recurring challenge. Their customers—fleet maintenance workshops servicing SINOTRUK HOWO trucks—were experiencing frequent gearbox failures linked to substandard aftermarket bearings. The Rolling Bearing 61820 AZ9003321820 was one of the most commonly requested replacement parts, yet their previous suppliers couldn’t guarantee consistent quality across batches.

After receiving samples of our SINOTRUK HW series gearbox rolling bearing 61820, their technical team ran dimensional checks and hardness tests. The results matched OEM tolerances precisely. They placed an initial order of 500 units with custom packaging featuring their company branding. Within six months, their return rate on gearbox bearing complaints dropped significantly, and they doubled their reorder volume.

Today, they source over 30 different SINOTRUK gearbox parts from Mettlead, including this rolling bearing, and have expanded their market share in the region. That’s the kind of partnership we build—one where product reliability drives your business growth.

Frequently Asked Questions – Rolling Bearing 61820 AZ9003321820

What is the exact function of Rolling Bearing 61820 in the SINOTRUK HW gearbox?

The Rolling Bearing 61820 (AZ9003321820) functions as a deep groove ball bearing that supports shaft rotation within the HW series transmission. It absorbs radial loads, reduces friction between moving parts, and maintains precise shaft alignment during gear engagement. Without a properly functioning bearing in this position, the gearbox would experience excessive vibration, heat buildup, and premature wear on adjacent components.

Is this bearing an exact replacement for the original SINOTRUK OEM part?

Yes. The Rolling Bearing 61820 AZ9003321820 we supply matches the original equipment dimensions (100mm × 125mm × 13mm), material grade (GCr15 bearing steel), and hardness specifications (HRC 61–65). It installs directly into the same position as the factory-fitted bearing without any modification required.

What causes premature failure of the 61820 gearbox bearing?

Several factors can shorten bearing life in the SINOTRUK HW gearbox. The most common causes include contaminated or insufficient lubrication, misalignment during installation, overloading the transmission beyond rated capacity, and using low-quality aftermarket bearings that don’t meet OEM hardness or tolerance standards. Sourcing from a reliable supplier with strict quality control helps eliminate the last issue entirely.

Can I order Rolling Bearing 61820 AZ9003321820 with my own brand packaging?

Absolutely. Mettlead offers full white-label and custom packaging services. You can specify your brand name, logo, part number format, box design, and even include your own technical documentation inside. This allows you to build brand recognition in your local market while sourcing factory-direct from China.

What is the minimum order quantity for wholesale pricing?

Our MOQ is flexible depending on your overall order scope and partnership level. For the Rolling Bearing 61820 AZ9003321820 specifically, we encourage you to contact us directly for a customized quote based on your volume requirements. We accommodate both trial orders and large bulk shipments.

How do you ensure quality consistency across large batch orders?

Every production batch of our Rolling Bearing 61820 undergoes multi-stage inspection: raw material verification, dimensional measurement after machining, hardness testing, surface roughness checks, and final assembly inspection. We maintain batch traceability records so that if any issue arises, we can identify and isolate affected units immediately.

Ready to Stock Rolling Bearing 61820 AZ9003321820? Let’s Talk.

You’ve seen the specifications, you understand the quality standards, and you know the competitive advantage of sourcing directly from a Chinese factory with over 15 years of truck parts expertise. Now it’s time to take the next step.

Whether you need a sample for testing, a quote for bulk quantities, or details about custom packaging options for the Rolling Bearing 61820 AZ9003321820 SINOTRUK HW Series Gearbox, our team is ready to respond within 24 hours.

Contact us now to request your wholesale quote and discover why distributors across Africa, the Middle East, Southeast Asia, and South America choose Mettlead as their trusted truck parts supplier.

Fast delivery. Factory pricing. Flexible payment. One reliable source for all your SINOTRUK gearbox bearing needs.