Product Type:Four-Row Tapered Roller Bearing

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1. Overview

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2. Basic Dimensions

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3. Structural Features

Component Composition: Two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings.
Clearance Adjustment: Spacers between inner and outer rings for precise clearance tuning.
Load-Bearing Advantage: Structural optimization enables simultaneous bearing of large radial loads and certain axial loads.

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4. Load-Carrying Capacity

Radial Load Capacity: The radial load-carrying capacity reaches approximately 2.5-3.5 times that of single-row tapered roller bearings, complying with high-precision industrial load requirements.
Load Type Adaptability: Specifically designed for combined radial and axial loads (with radial loads as the primary component), and demonstrates excellent resistance to heavy loads and impact loads.

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5. Performance Characteristics

Limiting Speed: Owing to structural constraints, the limiting speed is relatively lower compared to four-row cylindrical roller bearings, which is a trade-off for enhanced load-bearing performance.
Axial Load Capacity: Capable of withstanding axial loads in both directions, it can be deployed as a bidirectional thrust bearing to meet dual-directional axial load requirements.

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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: Specifically designed for work rolls and backup rolls of rolling mills, perfectly matching the high-precision and heavy-load requirements of European rolling mill equipment.
Other Applications: Widely applicable to heavy-duty mechanical equipment including cranes, mining machinery, and wind turbines, which demand excellent resistance to high loads and impact loads.