Product Type: Four-Row Tapered Roller Bearing

1. Overview

Featuring high-performance properties, the 380696 four-row tapered roller bearing is specially made for heavy-duty machinery. Possessing excellent resistance to heavy and impact loads, it is widely chosen as an ideal solution for key industrial equipment.

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2. Basic Dimensions

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3. Structural Features

Component Composition: The high-performance composite raceway system (two double-raceway inner rings, one double-raceway outer ring, two single-raceway outer rings) guarantees excellent stability during operation.
Clearance Adjustment: Built-in precision spacers between inner and outer rings allow flexible clearance control to adapt to various application scenarios.
Load-Bearing Advantage: Thanks to optimized structural design, it provides superior load capacity and can withstand large radial loads together with certain axial loads.

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4. Load-Carrying Capacity

Radial Load Capacity: It offers a radial load capacity of 2.5–3.5 times that of single-row tapered roller bearings, maintaining high reliability even in extreme heavy-load applications.
Load Type Adaptability: It works exceptionally under combined radial and axial loads dominated by radial loads, and shows strong resistance to heavy loads and impact forces in harsh industrial environments.

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5. Performance Characteristics

Limiting Speed: Owing to structural design, particularly the sliding contact between the rib and roller end, four-row tapered roller bearings generate increased friction while running. As a result, their limiting speed is comparatively lower than four-row cylindrical roller bearings and similar-size bearings.
Axial Load Capacity: Different from single-row tapered roller bearings with only one-way axial load capacity, the four-row design is engineered to resist heavy axial loads in both directions. This dual-direction performance ensures accurate axial positioning and efficiently absorbs rolling thrust. Since it primarily sustains heavy radial loads, it is highly suitable for complex combined load conditions.

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6. Material & Manufacturing

Heat Treatment: Special heat treatment process applied to enhance hardness, wear resistance, and fatigue life.

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7. Application Fields

Primary Application: Designed mainly for work rolls and backup rolls in rolling mills, it perfectly adapts to the severe operating conditions prevalent in the rolling industry.
Other Applications: Widely applied in heavy-duty machinery like cranes, mining equipment and wind turbines, it excels at enduring high loads and impact loads in complicated working scenarios.