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: Four-row tapered roller bearings produce higher friction during operation as a result of their structural features, especially the sliding contact between the rib and the roller end face. Accordingly, their limiting speed is relatively lower than that of other bearings with similar dimensions.
Axial Load Capacity: While single-row tapered roller bearings can only handle unidirectional axial loads, the four-row design is specifically constructed to withstand heavy axial loads from both directions. This bidirectional ability ensures reliable axial positioning and effective thrust management. It should be noted that it mainly undertakes heavy radial loads while providing excellent bidirectional thrust capacity.

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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.