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:Consists of two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings.
Clearance Adjustment:Equipped with spacers between inner and outer rings for precise clearance adjustment.
Load-BearingAdvantage:Structurally optimized to bear large radial loads and certain axial loads simultaneously.

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4. Load-Carrying Capacity

Radial Load Capacity: Approximately 2.5-3.5 times that of single-row tapered roller bearings.
Load Type Adaptability: Suitable for combined radial and axial loads (with radial loads as the main component), and capable of withstanding heavy loads and impact loads.

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5. Performance Characteristics

 Limiting Speed:Due to their structural design (specifically the sliding contact between the rib and the roller end face), four-row tapered roller bearings generate more friction during operation. Consequently, their limiting speed is relatively lower compared to other bearing types of similar size, such as four-row cylindrical roller bearings.
Axial Load Capacity:Unlike single-row tapered roller bearings, which can only handle axial load in one direction, the four-row design is specifically engineered to handle heavy axial loads in both directions.This bidirectional capacity allows the bearing to provide precise axial location of the rotating shaft and effectively manage thrust generated during the rolling process.It is important to note that while it excels at handling bidirectional thrust, it does so while primarily supporting heavy radial loads, making it ideal for complex, combined load conditions (e.g., in 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:Work rolls and backup rolls of rolling mills.
Other Applications:Heavy-duty mechanical equipment such as cranes, mining machinery, and wind turbines (requiring high load and impact load resistance).