Product Type: Four-Row Tapered Roller Bearing

1. Overview

Engineered exclusively for heavy-duty machinery, the 3806/510 four-row tapered roller bearing delivers high performance. Its superior ability to handle heavy loads and impact loads makes it a perfect fit for mission-critical industrial applications.

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2. Basic Dimensions

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3. Structural Features

Component Composition: Utilizing a high-grade composite raceway structure (two double-raceway inner rings, one double-raceway outer ring, two single-raceway outer rings), it delivers enhanced stability.
Clearance Adjustment: High-precision spacers between inner and outer rings enable flexible clearance adjustment to cope with various operating situations.
Load-Bearing Advantage: Optimized design greatly improves load-bearing ability, easily supporting heavy radial loads and specific axial loads at the same time.

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4. Load-Carrying Capacity

Radial Load Capacity: With radial load capacity reaching 2.5–3.5 times that of single-row tapered roller bearings, it delivers consistent reliability even in extreme high-load environments.
Load Type Adaptability: It performs exceptionally well under combined radial and axial loads (radial loads as the main part) and withstands heavy loads and impact in tough working conditions.

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5. Performance Characteristics

Limiting Speed: The design of four-row tapered roller bearings, which includes sliding contact between the rib and roller end face, causes higher friction during operation. Thus, their limiting speed is lower than that of other bearings with comparable dimensions.
Axial Load Capacity: Single-row tapered roller bearings can only support axial loads in one direction, but four-row tapered roller bearings are constructed to manage heavy axial loads from both directions. This dual-direction performance ensures reliable axial location of the shaft and efficient control of rolling thrust. It is ideal for complex combined load environments such as rolling mills.

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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: It is mainly applied in rolling mill work rolls and backup rolls, fully adapting to the severe working conditions of the rolling industry.
Other Applications: Suitable for a variety of heavy-duty mechanical equipment including cranes, mining machinery and wind turbines, it excels in bearing high loads and impact loads in complex working environments.