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: The proposed component comprises two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings.
Clearance Adjustment: Precise clearance tuning will be achieved via spacers between inner and outer rings, ensuring project compatibility.
Load-Bearing Advantage: Structural optimization enables simultaneous bearing of large radial loads and certain axial loads, supporting project performance requirements.

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4. Load-Carrying Capacity

Radial Load Capacity: Its radial load capacity is about 2.5–3.5 times stronger than single-row tapered roller bearings, so you can count on reliable performance even under high-load conditions.
Load Type Adaptability: It works well with combined radial-axial loads (radial is the main force) and can handle heavy loads and impact loads in harsh working environments—perfect for your equipment needs.

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5. Performance Characteristics

Limiting Speed: The structural design involving sliding contact between the rib and roller end face increases operational friction, which leads to a relatively lower limiting speed compared with four-row cylindrical roller bearings and other similar-size bearings.
Axial Load Capacity: Different from single-row tapered roller bearings that only support one-way axial loads, the four-row configuration offers superior bidirectional axial load capacity. It provides precise shaft positioning and efficiently resists thrust created during rolling. While excelling in 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 Application: The product is specifically designed for the work rolls and backup rolls of rolling mill systems, and it has been verified to perfectly match the high-precision and heavy-load requirements of European-standard rolling mill equipment.
Other Applications: Experimental data shows it is widely applicable to heavy-duty mechanical equipment, including cranes, mining machinery, and wind turbines, all of which have stringent demands for resistance to high loads and impact loads.