Product Type: Four-Row Tapered Roller Bearing

1. Overview

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2. Basic Dimensions

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3. Structural Features

Component Composition: The proposed component consists of two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings, forming a symmetric structure.
Clearance Adjustment: Spacers between the inner and outer rings are utilized for precise clearance tuning, ensuring the stability of the operating process.
Load-Bearing Advantage: Through structural optimization, the component exhibits the capability of simultaneously bearing large radial loads and certain axial loads, which is verified by experimental data.

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4. Load-Carrying Capacity

Radial Load Capacity: Experimental results indicate that the radial load capacity is approximately 2.5–3.5 times greater than that of single-row tapered roller bearings, ensuring stable and reliable performance under high-load operating conditions.
Load Type Adaptability: The component exhibits favorable adaptability to combined radial and axial loads (with radial loads as the dominant force) and demonstrates resistance to heavy loads and impact loads in harsh working environments.

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5. Performance Characteristics

Limiting Speed: Even with a limiting speed somewhat lower than four-row cylindrical roller bearings (due to structural design), it thrives in heavy-load operating scenarios.
Axial Load Capacity: It withstands axial loads from both sides and performs exceptionally well as a bidirectional thrust bearing in the harshest industrial 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: Let’s keep it simple—it’s specifically designed for the work rolls and backup rolls of rolling mills. It fits perfectly with European rolling mill equipment’s needs for high precision and heavy loads.
Other Applications: It’s also widely used in heavy-duty machines like cranes, mining equipment, and wind turbines—these machines need to handle high loads and impact loads really well, and this product delivers.