Product Type: Four-Row Tapered Roller Bearing

1. Overview

Custom-tailored for heavy-duty mechanical facilities, the 3810/630 four-row tapered roller bearing delivers premium performance. It excels at enduring heavy and impact loads, standing as the optimal option for essential industrial machinery.

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2. Basic Dimensions

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3. Structural Features

Component Composition: Superior stability is engineered through an advanced composite raceway system: two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings.
Clearance Adjustment: Inner and outer rings come with built-in precision spacers, enabling flexible clearance adjustment to suit diverse application needs.
Load-Bearing Advantage: Optimized structure delivers outstanding load capacity — capable of handling heavy radial loads and some axial loads simultaneously with ease.

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4. Load-Carrying Capacity

Radial Load Capacity: Achieving 2.5–3.5 times the radial load capacity of single-row tapered roller bearings, it guarantees reliable performance even under extreme heavy-load working conditions.
Load Type Adaptability: It features excellent adaptability to combined radial and axial loads with radial loads as the main component, and resists heavy loads and impact forces in tough scenarios.

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5. Performance Characteristics

Limiting Speed: The inherent sliding contact between the rib and roller end face raises friction levels during operation, leading to a relatively lower limiting speed for four-row tapered roller bearings.
Axial Load Capacity: Different from single-row tapered roller bearings that can only accommodate unidirectional axial loads, four-row tapered roller bearings deliver excellent bidirectional axial load performance. This enables precise axial positioning and efficient control of rolling thrust. While performing strongly in bidirectional thrust, it primarily undertakes 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 Application: The main application field is rolling mill work rolls and backup rolls, which fully meet the rigorous working conditions of the rolling industry.
Other Applications: It is widely applicable to heavy machines including cranes, mining equipment and wind turbines, and can stably bear high loads and impact loads in complex scenarios.