Product Introduction

This kit combines a high-performance tapered roller bearing with a precision adjusting ring, designed to support radial and axial loads in the rear wheel hub while allowing technicians to set optimal bearing preload for long service life.

Structure & Material

• Material:

• Bearing: High-carbon chromium bearing steel, heat-treated for hardness and fatigue resistance.

• Adjusting Ring: High-strength alloy steel, precision-machined for accurate preload adjustment.

  • Design: A single-row tapered roller bearing (with cone and cup) paired with a flat adjusting ring. The tapered geometry efficiently handles both radial and axial loads, while the ring fine-tunes bearing preload.

Performance

• Dual Load Handling: Tapered design supports heavy radial loads and axial thrust from braking and cornering.

• Precision Preload Adjustment: The adjusting ring enables technicians to set optimal bearing preload, reducing wear and extending component life.

• Low Friction: Precision-machined components minimize friction and heat buildup during operation.

Durability

• Bearing steel resists fatigue and wear under continuous heavy-duty operation.

• Alloy steel adjusting ring maintains dimensional stability for consistent preload over time.

Core Function

1. Wheel Hub Support: Bears radial and axial loads from the rear wheel hub.

2. Preload Adjustment: Enables precise setting of bearing preload to optimize performance and durability.

3. Load Distribution: Efficiently transfers forces to the axle/hub assembly.

Tapered Roller Bearing 31311 810W93420-0097 for Sinotruk Sitrak – Factory Direct Supply

When your Sinotruk Sitrak heavy-duty truck demands reliable power transmission, every single component in the drivetrain matters — especially the bearings that keep everything spinning smoothly under extreme loads. The Tapered Roller Bearing 31311 (OEM Part No. 810W93420-0097) is precisely engineered to handle the combined radial and axial forces that Sitrak trucks encounter on highways, construction sites, and long-haul routes. At Mettlead, we supply this genuine-spec bearing directly from our factory partners in China, which means you get uncompromising quality at a price that protects your bottom line.

Whether you are a fleet maintenance manager restocking critical spares or a parts distributor sourcing for your regional market, this tapered roller bearing delivers the durability and dimensional accuracy your customers expect. Let’s walk you through exactly what makes this bearing a smart investment for your operation.

Key Features and Benefits of Tapered Roller Bearing 31311 810W93420-0097

This isn’t just another bearing on a shelf — it’s a precision component designed to perform under the punishing conditions that heavy-duty trucks face daily. Here’s why procurement professionals consistently choose this part:

• Combined Load Capacity: The tapered roller design simultaneously handles both radial loads and axial (thrust) loads, making it ideal for rear axle and transmission applications where forces come from multiple directions.
• High-Grade Bearing Steel: Manufactured from chromium steel with optimized heat treatment, this bearing resists fatigue, wear, and deformation even after hundreds of thousands of kilometers.
• Precision Tolerances: Each bearing is ground to tight dimensional tolerances, ensuring smooth rotation, minimal vibration, and proper fitment within the Sitrak drivetrain housing.
• Extended Service Life: The optimized roller-to-raceway contact geometry distributes stress evenly, which translates directly into longer intervals between replacements and lower total cost of ownership.
• Direct OEM Replacement: Part number 810W93420-0097 ensures a drop-in fit for Sinotruk Sitrak models — no modifications, no guesswork, no downtime surprises.
• Factory-Direct Pricing: By sourcing through Mettlead, you eliminate middlemen and access competitive wholesale pricing that strengthens your margins.

Application Scenario: Where This Bearing Works Hardest

The Tapered Roller Bearing 31311 (810W93420-0097) is specifically designed for the Sinotruk Sitrak heavy-duty truck platform. Installed within the rear axle assembly and transmission system, this bearing plays a critical role in supporting the drivetrain under heavy payloads and high-torque conditions.

As a tapered roller bearing, it excels at absorbing the combined radial and axial loads generated during acceleration, braking, and cornering. This ensures that the transmission operates smoothly, power delivery remains consistent, and the rear axle maintains proper alignment — even when the truck is fully loaded on uneven terrain.

In short, this bearing keeps your Sitrak truck moving reliably, whether it’s hauling cargo across continents or navigating demanding job sites. For more Sitrak-compatible components, explore our complete Sitrak Heavy-Duty Parts catalog or browse our dedicated Rear Axle Parts category.

Technical Specifications

Accurate specifications matter when you’re matching parts to your fleet. Below you’ll find the key parameters for this tapered roller bearing:

Need to cross-reference this part with other Sinotruk Sitrak components? Our Sinotruk Sitrak Truck Parts Full Category Guide helps you find every related part quickly.

OEM/ODM Capability and Custom Packaging

We understand that different markets have different requirements. That’s why Mettlead offers flexible options that go beyond simply shipping a box:

• White-Label Packaging: Want to sell under your own brand? We provide neutral or custom-branded packaging tailored to your specifications, so you can build brand equity in your local market.
• Custom Packaging Design: From box dimensions to label language, we accommodate your packaging needs to meet regional regulations and customer expectations.
• Strict Quality Control: Every Tapered Roller Bearing 31311 undergoes dimensional inspection, hardness testing, and surface finish verification before it leaves our facility. We don’t ship parts that don’t meet spec — period.
• Bulk Order Flexibility: Whether you need 50 pieces or 5,000, our supply chain scales to match your demand without sacrificing lead times.
• Factory Visit Welcome: We encourage serious buyers to visit our facilities in China. Seeing our quality processes firsthand builds the trust that long-term partnerships require.

Frequently Asked Questions About Tapered Roller Bearing 31311 810W93420-0097

What vehicles does the Tapered Roller Bearing 31311 (810W93420-0097) fit?

This bearing is specifically manufactured as a direct replacement for Sinotruk Sitrak heavy-duty trucks. It matches the OEM part number 810W93420-0097 and fits into the rear axle and transmission assemblies without any modification required.

What type of loads can this tapered roller bearing handle?

Thanks to its tapered geometry, the 31311 bearing simultaneously supports both radial loads (perpendicular to the shaft) and axial loads (along the shaft). This dual-load capability is essential in drivetrain applications where forces act in multiple directions during normal truck operation.

How long does the Tapered Roller Bearing 31311 typically last?

Service life depends on operating conditions, load intensity, lubrication quality, and maintenance practices. However, when properly installed and lubricated, this bearing is engineered to deliver reliable performance for extended service intervals consistent with Sitrak OEM maintenance schedules.

What material is used in this bearing, and why does it matter?

The bearing is made from GCr15 chromium steel, which is the industry-standard material for high-performance roller bearings. This steel offers excellent fatigue resistance, high hardness (HRC 60–65), and consistent performance under heavy loads and elevated temperatures.

Can I order this bearing with my own brand packaging?

Absolutely. Mettlead offers white-label and custom packaging services. You provide your branding specifications, and we deliver the bearings packaged under your label — ready for your distribution network.

How do I verify that this bearing matches my truck’s requirements?

Cross-reference the OEM part number 810W93420-0097 with your vehicle’s parts manual. Additionally, confirm the bearing model (31311) and dimensions (55 mm × 120 mm × 31.5 mm) against your existing component. If you’re unsure, our technical team can assist with verification.

Ready to Secure Your Supply of Tapered Roller Bearing 31311?

Every day your fleet sits idle waiting for parts is a day of lost revenue. Don’t let bearing availability become a bottleneck in your maintenance schedule. Mettlead delivers factory-direct Sinotruk Sitrak parts with competitive pricing, fast lead times, and the quality assurance your operation depends on.

Take the next step today:

• Request a quote with your required quantity and delivery destination
• Ask about volume discounts for bulk orders
• Inquire about custom packaging for your brand

👉 Contact Us Now to get your personalized quotation and secure reliable supply for your Sinotruk Sitrak fleet. Our team typically responds within 24 hours with pricing and availability.