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: It’s a composite design with two inner rings that have double raceways, one outer ring with a double raceway, and two outer rings with single raceways. This setup makes sure force is distributed stably.
Clearance Adjustment: There are special spacers between the inner and outer rings— these let us adjust the bearing’s clearance accurately, so it works well no matter what the working conditions are.
Load-Bearing Advantage: We optimized the structure, so now the bearing can handle big radial loads and some axial loads at the same time. That’s made its overall load-bearing efficiency a lot better.

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4. Load-Carrying Capacity

Radial Load Capacity: Targeting equipment with high-load demands, this bearing offers a radial load capacity 2.5–3.5 times that of single-row tapered roller bearings, ensuring stable performance under strenuous conditions.
Load Type Adaptability: Designed for harsh operating environments, it excels at handling combined radial-axial loads (radial as main force) and resists the heavy loads and impact loads common in heavy-duty industries.

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5. Performance Characteristics

Limiting Speed: Sliding contact between the rib and roller end causes higher friction in operation, which results in a comparatively lower limiting speed than other bearings of the same size.
Axial Load Capacity: Compared with single-row tapered roller bearings that can only bear axial loads in one direction, the four-row design is engineered to support heavy bidirectional axial loads. This bidirectional ability ensures accurate axial positioning and effectively absorbs rolling thrust. Importantly, it primarily carries heavy radial loads while providing dual-direction thrust resistance, making it ideal for 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: Engineered exclusively for the work roll and backup roll assemblies of rolling mills, this bearing delivers a perfect match for the rigorous high-precision and heavy-load demands imposed by European rolling mill equipment.
Other Applications: It is extensively suitable for deployment on heavy-duty mechanical assets including cranes, mining machinery, and wind turbines, all of which require outstanding resistance to sustained high loads and intermittent impact loads.