Product Type: Four-Row Tapered Roller Bearing

1. Overview

Built for heavy-duty machinery, the 381092 four-row tapered roller bearing offers reliable high-performance characteristics. Its remarkable capacity to carry heavy and impact loads makes it a preferred choice for key industrial applications.

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2. Basic Dimensions

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3. Structural Features

Component Composition: An advanced composite raceway structure, composed of two double-raceway inner rings, one double-raceway outer ring and two single-raceway outer rings, provides reliable stability.
Clearance Adjustment: Integrated precision spacers between inner and outer rings allow for flexible clearance setting to meet different operating requirements.
Load-Bearing Advantage: Structural optimization results in outstanding load capacity, supporting high radial loads and certain axial loads simultaneously with ease.

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4. Load-Carrying Capacity

Radial Load Capacity: It achieves a radial load capacity 2.5–3.5 times that of single-row tapered roller bearings, ensuring reliable operation even under extreme heavy-duty loading.
Load Type Adaptability: It operates superbly under combined radial and axial loads with radial loads as the main part, and effectively withstands heavy loads and impact forces in harsh applications.

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5. Performance Characteristics

Limiting Speed: The sliding contact between the rib and roller end within the structure increases friction during operation, so the limiting speed is comparatively lower than other similar-sized bearing types.
Axial Load Capacity: Unlike single-row tapered roller bearings that can only bear unidirectional axial loads, four-row tapered roller bearings are engineered to handle heavy bidirectional axial loads. This dual-direction capability ensures precise axial positioning and effectively absorbs thrust in rolling. Since it primarily sustains heavy radial loads, it is ideal for complex combined load environments.

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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: For your European-standard rolling mill operations, our product is specifically engineered for work rolls and backup rolls. It is precisely calibrated to meet the high-precision and heavy-load demands of your equipment, ensuring optimal performance and longevity.
Other Applications: Additionally, it offers versatile applicability across your fleet of heavy-duty machinery, including cranes, mining equipment, and wind turbines. Its exceptional resistance to high loads and impact loads will directly reduce your maintenance downtime and operational costs.