538983B Tapered Roller Bearing 70x130x57mm Optimized Automotive & Industrial Series

Optimized Internal Geometry (B-Designation): The "B" signifies a specialized internal design, often featuring a steeper contact angle or modified roller profile, allowing it to support significantly higher axial loads than standard models.
100% Manual Quality Verification: Instead of batch-testing off an automated line, our workshop technicians manually assemble and physically rotate every single 538983B bearing. This hands-on approach guarantees zero tight spots and flawless rolling fluency before it ever reaches the packaging stage.
High-Purity Chrome Steel: Forged from vacuum-degassed GCr15 steel, delivering exceptional hardness and wear resistance to survive the harsh realities of unpaved roads and heavy cargo hauling.
Friction & Heat Reduction: The precision-ground raceways ensure optimal oil and grease film formation, drastically reducing operating temperatures during high-speed, long-distance commercial transport. Interchangeable Components: The separable cup and cone design allows for easier field maintenance and rapid replacement in regional auto repair workshops.

Parameter Table

Specification	Technical Details
Model Number	538983B
Bearing Type	Single Row Tapered Roller Bearing
Inner Diameter (d)	70.00 mm
Outer Diameter (D)	130.00 mm
Total Width (B)	57.00 mm
Material	Premium GCr15 Chrome Steel
Cage Design	Stamped Steel Window-type Cage

Product Introduction

Introduction

The 538983B is a highly versatile, heavy-duty single-row tapered roller bearing measuring 70 mm x 130 mm x 57 mm. It is a dominant SKUs in the global commercial vehicle aftermarket, specifically engineered to manage the intense combined radial and thrust loads generated by heavy trucks and trailers. In our specialized assembly workshop in Linqing, we treat this high-turnover item with the same meticulous care as our giant industrial bearings. By relying on experienced manual assembly rather than rigid, automated pressing, we eliminate the micro-abrasions that often plague mass-produced automotive bearings. This rigorous, individual attention ensures that every 538983B we export delivers premium longevity and absolute safety for end-users across diverse terrains.

Applications

Commercial Vehicles: Widely used in the wheel hubs and axle assemblies of heavy-duty transport trucks, trailers, and buses.
Automotive Transmissions: Acts as a critical support bearing within commercial manual and automatic gearboxes.
Agricultural Machinery: Deployed in the drivetrains and wheel hubs of large tractors and harvesters.
General Industrial: Suitable for medium-sized industrial gear reducers and conveyor drive systems.

FAQ

Q: Can we order the 538983B with custom-branded individual boxes for our retail stores?
A: Yes! We highly encourage OEM customization. We can supply the bearings in bespoke retail color boxes featuring your brand logo, corporate colors, and localized language, ensuring they are ready for direct shelf display.
Q: Do you offer laser engraving on this specific model?
A: Absolutely. We can laser-mark your specific brand name, the 538983B model number, and sequential batch codes directly onto the outer ring of the bearing for easy traceability and brand reinforcement.
Q: What is the typical lead time for a wholesale order to South America or Africa?
A: Because we control our own flexible assembly workflow, we can process and prepare standard wholesale orders within 15 to 25 days, followed by immediate dispatch to the shipping port.

Packaging Customization

For B2B auto parts distributors, presentation is everything. We offer highly customizable packaging solutions. Standard packaging includes a heavy coating of anti-rust oil, a sealed plastic barrier bag, and a neutral white or brown individual box. For OEM clients, we upgrade this to full-color custom retail cartons. These individual boxes are then packed into reinforced, double-corrugated master cartons, capped at an optimal weight to ensure easy manual handling at your warehouse.

Shipping & Delivery

We consolidate the master cartons onto solid, ISPM-15 certified fumigated wooden pallets, tightly wrapped in stretch film and secured with heavy-duty strapping. This guarantees absolute stability during maritime transit. We have extensive experience coordinating LCL and FCL shipments to high-demand automotive aftermarkets in South America, Africa, the Middle East, and Russia, ensuring all export customs documentation is flawless.