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: Let’s break down the parts: two inner rings with two raceways each, one outer ring with two raceways, and two outer rings with one raceway each.
Clearance Adjustment: There are spacers between the inner and outer rings, so we can tune the clearance precisely as needed.
Load-Bearing Advantage: We’ve optimized the structure, so it can handle big radial loads and some axial loads at the same time.

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4. Load-Carrying Capacity

Radial Load Capacity: Even in high-load, harsh settings, it remains reliable—its radial load capacity is 2.5–3.5 times stronger than single-row tapered roller bearings.
Load Type Adaptability: Built to thrive in harsh working environments, it handles combined radial-axial loads (radial main) and resists heavy/impact loads.

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5. Performance Characteristics

Limiting Speed: Structural design leads to a slightly lower limiting speed than four-row cylindrical roller bearings, but this does not hinder its suitability for heavy-load operations—its key application scenario.
Axial Load Capacity: A standout feature is its bidirectional axial load-bearing capability, enabling it to work effectively as a bidirectional thrust bearing in harsh industrial settings.

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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: Specifically designed to fit rolling mill work rolls and backup rolls, it seamlessly matches the high-precision and heavy-load requirements of European rolling mill equipment.
Other Applications: For heavy-duty equipment like cranes, mining machinery, and wind turbines that need top-tier high-load and impact load resistance, this product is widely applicable.