Welcome to Linqing Xinshengdi Bearing Co., Ltd.
351996 Double Row Tapered Roller Bearing 480x650x180mm Heavy-Duty Industrial Series
- Exceptional Load Capacity: Designed with a double-row configuration, the 351996 bearing is highly capable of supporting immense radial loads as well as heavy bidirectional axial loads simultaneously.
- Bespoke Manual Assembly: Due to its massive dimensions, relying on automated mechanical pressing can induce unwanted structural stress. Each unit undergoes a meticulous manual assembly process by experienced technicians in our specialized workshop, guaranteeing perfect internal alignment and optimal clearance.
- High-Purity Material: Forged from top-tier GCr15 high-carbon chromium bearing steel and subjected to advanced heat treatment, ensuring deep uniform hardness and superior resistance to subsurface fatigue.
- Reduced Friction & Heat: Super-finished raceways and precision-profiled rollers minimize friction during operation, significantly lowering heat generation and extending the continuous operational lifecycle of heavy machinery.
Parameter Table
| Specification | Technical Details |
| Model Number | 351996 |
| Bearing Type | Double Row Tapered Roller Bearing |
| Inner Diameter (d) | 480.00 mm |
| Outer Diameter (D) | 650.00 mm |
| Total Width (B) | 180.00 mm |
| Material | Premium Chrome Steel (GCr15) |
| Cage Material | Pressed Steel / Machined Brass (Optional) |
| Precision Rating | P0/P6 / ABEC-1 (Higher precision available upon request) |
Product Introduction
Introduction
The 351996 Double Row Tapered Roller Bearing is a highly specialized, large-scale industrial component engineered for the most demanding mechanical environments. Featuring a substantial 480 mm inner diameter, a 650 mm outer diameter, and a 180 mm total width, this bearing acts as the critical backbone for heavy-duty rotary equipment. Unlike standard commercial bearings produced on high-speed automated lines, the 351996 requires artisan-level precision. Our dedicated assembly facility in Linqing focuses purely on the intricate fitting, manual clearance adjustment, and rigorous individual verification of these massive units. This hands-on, bespoke approach ensures that every single bearing delivers flawless rotation and zero-defect structural integrity, providing ultimate reliability for B2B clients in the metallurgical, mining, and heavy construction sectors across the globe.
Applications
Metallurgical Industry: Primarily utilized in the roll necks of heavy steel and aluminum rolling mills where multi-directional extreme forces are constant.
Mining & Aggregates: Essential for large-scale crushers, vibrating screens, and heavy-duty pulverizing equipment operating under high shock loads.
Industrial Gearboxes: Supports the main drive shafts in massive industrial reduction gearboxes and heavy transmission systems.
Heavy Construction: Applied in tunnel boring machines and heavy rotary platforms requiring maximum rigid support.
FAQ
Q: Can you adjust the internal clearance of the 351996 bearing to our specific operating temperature requirements?
A: Yes, because our technicians manually assemble and verify each large-scale bearing, we can precisely adjust the internal clearance (e.g., configuring for severe thermal expansion) before final dispatch to match your exact working conditions.
Q: Is it possible to order just one piece as a sample or for an emergency replacement?
A: Absolutely. We understand that bearings of this magnitude are often required for specific maintenance repairs. We maintain flexible MOQ policies and can process single-unit orders for immediate B2B export.
Q: How do you guarantee the quality of such a large bearing without a massive automated factory?
A: For ultra-large bearings, human expertise and manual verification are far superior to automated assembly, which can easily damage heavy components. Our workshop specializes exclusively in precision hand-fitting and individual micrometer testing, ensuring a 100% pass rate before packing.
Packaging Customization
We offer comprehensive B2B OEM packaging solutions for heavy bearings. Upon request, we can provide precision laser marking on the bearing outer ring featuring your specific brand logo, part numbers, and batch codes. For physical packaging, the bearing is thoroughly coated in premium industrial anti-rust oil, hermetically sealed in thick VCI (Volatile Corrosion Inhibitor) plastic barrier film, and then securely bolted into a custom-built, heavy-duty wooden box to prevent any internal movement.
Shipping & Delivery
Due to the immense weight and size of the 351996, standard shipping requires robust logistical planning. We secure the wooden crates onto ISPM-15 compliant fumigated wooden pallets with heavy-duty steel strapping. We coordinate seamlessly with major freight forwarders to facilitate reliable LCL (Less than Container Load) or FCL (Full Container Load) ocean freight shipping. Our export team is highly experienced in navigating customs documentation for seamless delivery to major industrial markets, including Russia, the Middle East, Africa, and South America.
