Product Type: Four-Row Tapered Roller Bearing

1. Overview

The 380698 four-row tapered roller bearing is a high-performance bearing specially constructed for heavy-duty machinery. Its excellent load-bearing capacity for heavy and impact loads makes it a perfect match for key industrial equipment.

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2. Basic Dimensions

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3. Structural Features

Component Composition: An advanced combined raceway structure consisting of two double-raceway inner rings, one double-raceway outer ring and two single-raceway outer rings enhances overall stability.
Clearance Adjustment: Integrated precision spacers between inner and outer rings enable flexible clearance regulation for diverse working scenarios.
Load-Bearing Advantage: Optimized construction delivers exceptional load capacity, efficiently enduring large radial loads and certain axial loads simultaneously.

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4. Load-Carrying Capacity

Radial Load Capacity: Boasting 2.5–3.5 times higher radial load capacity than single-row tapered roller bearings, it ensures consistent and dependable operation in extreme high-load applications.
Load Type Adaptability: It shows outstanding adaptability to combined radial and axial loads (primarily radial loads) and withstands heavy loads and impacts in demanding industrial conditions.

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5. Performance Characteristics

Limiting Speed: Due to its structural configuration, especially the sliding contact between the rib and the roller end face, four-row tapered roller bearings produce greater friction during operation. Hence, their limiting speed is lower than that of other similarly sized bearing types, for instance four-row cylindrical roller bearings.
Axial Load Capacity: Single-row tapered roller bearings are limited to unidirectional axial load support, whereas four-row tapered roller bearings are specifically constructed to handle heavy axial loads from both directions. This dual-direction capability allows for precise shaft positioning and efficient control of rolling thrust. It is worth emphasizing that while performing well in bidirectional thrust, it primarily undertakes heavy radial loads, perfectly suited for rolling mill applications.

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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: As a key component for work rolls and backup rolls of rolling mills, it is highly adaptable to the harsh operating environment of the rolling sector.
Other Applications: It performs well in various heavy-duty mechanical applications such as cranes, mining equipment and wind turbines, effectively withstanding high loads and impact loads in complex working environments.