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: Quick note on composition: 2 double-raceway inner rings, 1 double-raceway outer ring, 2 single-raceway outer rings.
Clearance Adjustment: Spacers between inner/outer rings for precise clearance tuning.
Load-Bearing Advantage: Structural optimization → simultaneous large radial + certain axial load bearing.

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4. Load-Carrying Capacity

Radial Load Capacity: The proposed component’s radial load capacity is approximately 2.5–3.5 times higher than single-row tapered roller bearings, ensuring reliable performance under the project’s high-load requirements.
Load Type Adaptability: It adapts to combined radial-axial loads (radial main force) and withstands heavy/impact loads in harsh working environments, aligning with the project’s operational demands.

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5. Performance Characteristics

Limiting Speed: Limiting speed slightly lower than four-row cylindrical roller bearings (structure) → fully suitable for heavy-load operations.
Axial Load Capacity: Bears bidirectional axial loads; works as bidirectional thrust bearing in harsh 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: This study focuses on a product specifically engineered for rolling mill work rolls and backup rolls, which perfectly meets the high-precision and heavy-load requirements of European rolling mill equipment.
Other Applications: Beyond its primary use, the product is widely adopted in heavy-duty mechanical equipment such as cranes, mining machinery, and wind turbines, as these devices require excellent resistance to high loads and impact loads.