Product Introduction

The front wheel outer bearing 32310 is a single-row tapered roller bearing manufactured from high-strength alloy bearing steel through precision forging, heat treatment and grinding processes. It consists of an inner ring, outer ring, tapered rollers and cage, which can effectively bear both radial load and axial load generated during vehicle driving, steering and braking. This bearing is specially designed to match the front wheel hub structure of HOWO trucks, with high dimensional accuracy, good rotation stability and strong resistance to fatigue and wear, so as to ensure the normal and stable operation of the front wheel under long-term heavy-load working conditions.

Core Function

• Bear the radial and axial loads generated by vehicle weight, driving and steering.

• Reduce the rotational friction between the front wheel hub and the steering knuckle.

• Keep the front wheel rotating smoothly and stably, avoiding abnormal vibration and noise.

• Directly interchangeable with the original factory parts, ensuring reliable installation and long service life.

Front Wheel Outer Bearing 32310 190003326531 for Sinotruk HOWO Trucks

When your HOWO truck hits the road carrying heavy loads day after day, every single component in the front axle assembly needs to perform flawlessly. The Front Wheel Outer Bearing 32310 (OEM: 190003326531) is engineered precisely for that purpose — it quietly shoulders enormous radial and axial forces while keeping your front wheels spinning smoothly, reducing friction, and extending service life under the most demanding conditions. Built from premium alloy bearing steel through precision forging and advanced heat treatment, this tapered roller bearing delivers the dimensional accuracy and fatigue resistance that long-haul heavy-duty trucking demands.

At Mettlead, we supply genuine-quality Sinotruk HOWO truck parts directly from our factory in China, which means you get competitive pricing without compromising on reliability. Whether you manage a fleet of heavy trucks or run a parts distribution business, this front wheel outer bearing is ready to keep your vehicles rolling.

Key Features and Benefits of the 32310 Front Wheel Outer Bearing

Superior Load-Bearing Capacity

As a single-row tapered roller bearing, the 32310 is specifically designed to handle combined radial and axial loads simultaneously. This means it confidently supports the weight of a fully loaded HOWO truck while also absorbing the lateral forces generated during steering and braking maneuvers.

Premium Material Construction

Manufactured from high-strength alloy bearing steel, this component undergoes precision forging followed by carefully controlled heat treatment and grinding processes. The result is a bearing surface that resists fatigue, minimizes wear, and maintains its integrity over hundreds of thousands of kilometers.

Precision-Engineered Dimensions

Every millimeter matters in a front wheel hub assembly. The 32310 bearing is ground to tight tolerances, ensuring a perfect fit within the Sinotruk HOWO front axle structure. This precision translates directly into smoother rotation, reduced vibration, and quieter operation on the road.

Extended Service Life

Thanks to its robust cage design and optimized roller geometry, this bearing distributes stress evenly across all contact surfaces. Consequently, it resists premature pitting and spalling — two common failure modes that can sideline a truck unexpectedly.

Direct OEM Replacement

With OEM part number 190003326531, this bearing drops directly into your existing front wheel hub without any modifications. That means faster repairs, less downtime, and a straightforward installation process for your maintenance team.

Technical Specifications

Application Scenarios

Compatible Vehicles

This front wheel outer bearing 32310 is specifically designed to fit Sinotruk HOWO heavy-duty trucks, including the HOWO 6×4 and 8×4 series cargo trucks, dump trucks, tractor heads, and mixer trucks. It integrates seamlessly with the standard HOWO front axle configuration.

Installation Position

The bearing sits in the front wheel running mechanism, mounted at the outer position of the front wheel hub assembly. It works in tandem with the inner bearing to support the entire front wheel structure.

Functional Role

In operation, this bearing performs three critical tasks:

• Supporting wheel rotation — It allows the front wheels to spin freely under load, minimizing rotational friction and energy loss.
• Reducing turning friction — During steering, the tapered roller design accommodates angular forces smoothly, protecting the hub from excessive wear.
• Absorbing braking forces — When the driver applies brakes, the bearing handles sudden axial thrust without deformation or displacement.

For more Sinotruk front axle components, feel free to browse our Front Axle Parts Category or explore the full range of Sinotruk HOWO Truck Parts we carry.

OEM/ODM Capability

At Mettlead, we understand that different markets have different requirements. That is why we offer flexible customization options alongside our standard product line:

• White-Label Packaging — We can supply the 32310 front wheel outer bearing in neutral packaging, allowing you to apply your own brand identity for resale in your local market.
• Custom Packaging — Need specific box designs, labels, or multilingual documentation? Our team handles custom packaging requests to match your brand standards.
• Strict Quality Control — Every bearing passes through multiple inspection stages including dimensional verification, hardness testing, and surface finish checks before shipment.
• Factory-Direct Pricing — Because we source directly from manufacturing facilities in China, you benefit from competitive wholesale pricing without middleman markups.
• Bulk Order Support — Whether you need 50 pieces or 5,000, our supply chain is built to handle volume orders with consistent quality and reliable delivery timelines.

We also welcome visitors to our facility for on-site inspections. Seeing our quality processes firsthand gives you the confidence to build a long-term supply partnership.

Frequently Asked Questions About the 32310 Front Wheel Outer Bearing

What type of bearing is the 32310?

The 32310 is a single-row tapered roller bearing. Its conical geometry allows it to handle both radial loads (the weight pressing down) and axial loads (side forces from steering and braking) at the same time. This makes it ideal for front wheel hub applications on heavy trucks.

Which vehicles does this front wheel outer bearing 32310 (190003326531) fit?

This bearing is designed as a direct-fit replacement for Sinotruk HOWO heavy-duty trucks. It matches the OEM specification 190003326531 and installs in the outer position of the front wheel hub assembly without any modification required.

How can I tell if my front wheel outer bearing needs replacement?

Common signs include unusual humming or growling noises from the front wheels that change with speed, noticeable play or looseness in the wheel when jacked up, uneven tire wear on the front axle, or vibration felt through the steering wheel. If you notice any of these symptoms, inspecting the bearing promptly can prevent more costly damage to the hub or spindle.

What is the expected service life of this 32310 bearing?

Under normal operating conditions with proper lubrication and correct preload adjustment, this bearing typically lasts between 200,000 and 400,000 kilometers. However, actual lifespan depends on load conditions, road quality, maintenance intervals, and whether the bearing seal remains intact to keep contaminants out.

Does this bearing come pre-greased or do I need to lubricate it during installation?

The 32310 is an open-type bearing, which means it does not come with built-in seals or pre-packed grease. During installation, you should pack it thoroughly with high-quality lithium-based or synthetic wheel bearing grease. Proper lubrication is essential for achieving optimal performance and longevity.

Can I replace only the outer bearing, or should I replace both inner and outer together?

While it is technically possible to replace only the outer bearing, best practice recommends replacing both the inner and outer front wheel bearings simultaneously. They wear at similar rates, and replacing both ensures balanced performance and avoids a second disassembly shortly after.

What is the correct preload adjustment for this bearing?

Preload should be set according to Sinotruk’s service manual specifications for the HOWO front axle. Generally, the nut is tightened while rotating the hub until slight resistance is felt, then backed off to achieve the specified end play (typically 0.03–0.08 mm). Incorrect preload — either too tight or too loose — significantly shortens bearing life.

Ready to Order Your Front Wheel Outer Bearing 32310?

Getting the right parts at the right price shouldn’t be complicated. As your dedicated Sinotruk parts supplier, Mettlead offers factory-direct pricing, fast shipping, and flexible payment options that make procurement simple and secure.

Here’s how to get started:

1. Tell us the quantity you need and your delivery destination.
2. Receive a competitive quotation within 24 hours.
3. Confirm your order and choose your preferred payment method.
4. We handle quality inspection, packing, and logistics.

Whether you need a single piece for an urgent repair or a bulk shipment for your warehouse, we are ready to help. Contact us today to request a quote or ask any technical questions about this bearing or any other Sinotruk HOWO parts.

You can also explore our complete Sinotruk Truck Parts catalog to find everything you need in one place.