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: Made up of two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings, the structure is robust and easy to maintain.

Clearance Adjustment: Spacers between inner and outer rings allow precise clearance adjustment, adapting to the harsh operating environments of local heavy industry.
Load-Bearing Advantage: Structurally optimized to bear large radial loads and certain axial loads at the same time, suitable for high-load and impact-prone working scenarios of mining and rolling mill equipment.

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4. Load-Carrying Capacity

Radial Load Capacity: The radial load-carrying capability is roughly 2.5-3.5 times higher than that of single-row tapered roller bearings, meeting the requirements of high-precision industrial loads.
Load Type Adaptability: Tailored for combined radial and axial loads (with radial loads as the primary), it shows outstanding tolerance to heavy loads and impact loads.

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5. Performance Characteristics

Limiting Speed: Because sliding contact exists between the rib and the roller end face in its structure, four-row tapered roller bearings generate more friction during operation. As a result, their limiting speed is relatively lower than other bearings of comparable size, such as four-row cylindrical roller bearings.
Axial Load Capacity: Single-row tapered roller bearings can only accommodate axial loads in one direction, but the four-row structure is specifically designed to manage heavy axial loads in both directions. This bidirectional ability ensures precise axial location of the shaft and effectively controls thrust from the rolling process. It is important to emphasize that while providing strong bidirectional thrust resistance, it mainly supports heavy radial loads, making it ideal for complex combined load conditions 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: Its design is specifically tailored for work rolls and backup rolls in rolling mills, making it an ideal match for the high-precision and heavy-load requirements characteristic of European mill equipment.
Other Applications: Beyond its primary use, it finds broad applicability in various heavy-duty machines, including cranes, mining machinery, and wind turbines, all of which demand superior performance under high and impactful loads.