Product Type: Four-Row Tapered Roller Bearing

1. Overview

The 3806/600 four-row tapered roller bearing is a high-performance component, exclusively engineered for use in heavy-duty machinery. Its outstanding performance under heavy loads and impact loads makes it an ideal option for key industrial applications.

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2. Basic Dimensions

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3. Structural Features

Component Composition: Stability is maximized by an advanced composite raceway configuration: two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings.
Clearance Adjustment: Precision spacers are integrated between the inner and outer rings, enabling flexible clearance adjustment to meet diverse operational needs.
Load-Bearing Advantage: Structural optimization yields superior load performance — effortlessly managing heavy radial loads along with selected axial loads simultaneously.

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4. Load-Carrying Capacity

Radial Load Capacity: It supports 2.5–3.5 times the radial load capacity of single-row tapered roller bearings, guaranteeing consistent reliability even under extreme high-load environments.
Load Type Adaptability: It performs remarkably well with combined radial and axial loads (radial loads as the main component) and resists heavy loads and impact forces in demanding working scenarios.

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5. Performance Characteristics

Limiting Speed: Structural characteristics involving sliding contact between the rib and roller end face lead to higher operational friction for four-row tapered roller bearings. For this reason, their limiting speed is relatively lower than comparable bearings such as four-row cylindrical roller bearings.
Axial Load Capacity: Whereas single-row tapered roller bearings offer only unidirectional axial load capacity, four-row tapered roller bearings are specially built to carry heavy bidirectional axial loads. This ensures reliable axial positioning and efficient control of thrust generated during rolling. While providing outstanding bidirectional thrust resistance, it primarily undertakes heavy radial loads.

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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: The main application is in the work rolls and backup rolls of rolling mills, which can well meet the severe working conditions of the rolling industry.
Other Applications: It is ideal for heavy machinery including cranes, mining equipment and wind turbines, with excellent performance in resisting heavy loads and impact loads under complex working conditions.