Product Type: Four-Row Tapered Roller Bearing

1. Overview

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2. Basic Dimensions

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3. Structural Features

The bearing provides a robust assembly of two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings. It ensures operational precision through integrated spacers that allow for exact clearance adjustment. This design guarantees reliable performance in applications demanding simultaneous resistance to high radial loads and moderate axial loads.

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4. Load-Carrying Capacity

Radial Load Capacity: Enabling a radical increase in performance, this bearing supports radial loads up to 3.5 times those of conventional single-row designs, meeting the challenge of high-precision industrial applications.
Load Type Adaptability: It manages complex load scenarios (radial-primary combined loads) with confidence, providing proven durability against heavy and impactful forces.

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5. Performance Characteristics

Limiting Speed: Due to the sliding contact within the structure between the rib and roller end face, these bearings generate increased friction during operation, resulting in a lower limiting speed relative to similar-size bearings.
Axial Load Capacity: Compared with single-row tapered roller bearings that only support unidirectional axial loads, the four-row structure is specially designed for heavy bidirectional axial loads. It delivers precise axial positioning and effectively resists thrust generated during rolling. While excelling at bidirectional thrust, it primarily carries heavy radial loads.

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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 Domain: Rolling mill work and backup rolls.
Additional Domains: Various heavy-duty machinery in sectors like material handling, mining, and renewable energy (exemplified by cranes, mining machinery, and wind turbines), particularly where superior load and impact tolerance is required.