Product Type: Double-Row Tapered Roller Bearing
Model No.: 350644
1. Overview
Exclusively developed for heavy-load metallurgical and industrial working conditions, double-row tapered roller bearings feature robust solid structure, ultra-high rigidity and stable smooth rotation. With powerful overall load-bearing performance, they adapt to various complex combined load environments and are mandatory core supporting parts for rolling mill, mining and large heavy-duty mechanical equipment.
2. Basic Dimensions
Dimension Type
|
Value
|
Inner Diameter (d)
|
220mm
|
Outer Diameter (D)
|
370mm
|
Thickness (B)
|
50mm
|
3. Structural Features
Component Composition: This bearing unit is made of two sets of tapered rollers, double-row race inner ring, one-piece forged outer ring and high-rigidity precision cage, presenting compact layout and high structural integration level.
Clearance Adjustment: Featured with flexible adjustable internal clearance design, accurate preload and clearance fine adjustment can be realized to adapt to variable working environments.
Load-Bearing Advantage: Fully optimized double-row symmetric construction enhances integral structural rigidity, capable of carrying large radial loads and bidirectional axial loads with balanced internal stress distribution.
4. Load-Carrying Capacity
Radial Load Capacity: It features superior radial load carrying capacity compared with single-row tapered roller bearings, satisfying the requirements for long-duration heavy-load operation.
Load Type Adaptability: Optimized for compound load conditions with radial loads as the primary force and bidirectional axial loads as supplement, it reliably withstands continuous heavy loads, cyclic alternating loads and mechanical impact loads.
5. Performance Characteristics
Limiting Speed: Custom-designed tapered roller contact structure and well-coordinated friction parts deliver stable working status under medium-low speed heavy-load working modes, marked by low operating noise and tiny friction power consumption.
Axial Load Capacity: Single-row tapered roller bearings lack bidirectional axial bearing capacity and can only carry unidirectional axial loads; the symmetric double-row structure overcomes this limitation and stably endures two-way axial thrust. It achieves precise shaft axial positioning and relieves axial displacement and mechanical vibration during operation.
Operational Stability: Carefully refined roller layout and superior raceway contact minimize running deflection and mechanical abrasion, supporting durable continuous stable service across all types of severe industrial working scenes.
6. Material & Manufacturing
Inner & Outer Rings: High-quality pure bearing steel is adopted for ring production, ensuring remarkable hardness and steady deformation resistance.
Rolling Elements: Accurately crafted tapered rollers realize balanced load bearing and outstanding top-grade anti-wear performance.
Cage: Durable reinforced rigid cage with high tensile strength restricts roller shifting and collision contact effectively.
Heat Treatment: Full-body quenching and tempering process improves surface hardness and integral fatigue durability, extending service life and aligning with long-cycle industrial usage requirements.
7. Application Fields
Primary Application: Serving as supporting bearings for roll necks, transmission parts and auxiliary bearing positions, these bearings are widely used on steel rolling mills and metallurgical machinery.
Other Applications: They work well with all heavy-load mechanical devices that need high stiffness and bidirectional load bearing performance, such as mining machinery, construction equipment, heavy gear boxes and industrial drive systems.
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+86-13670502706