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: Two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings form the component.
Clearance Adjustment: Precise clearance tuning is realized by spacers placed between inner and outer rings.
Load-Bearing Advantage: Simultaneous bearing of large radial loads and certain axial loads is enabled by structural optimization.

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4. Load-Carrying Capacity

Radial Load Capacity: The radial load capacity of this component is roughly 2.5–3.5 times stronger than that of single-row tapered roller bearings, ensuring consistent and reliable performance under high-load operational scenarios.
Load Type Adaptability: It functions effectively with combined radial and axial loads (where radial loads serve as the primary force) and can endure heavy loads and impact loads in harsh working environments.

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5. Performance Characteristics

Limiting Speed: Lower than four-row cylindrical roller bearings (structural design reason) but fully suitable for heavy-load scenarios.
Axial Load Capacity: Bidirectional axial load bearing; performs well as a bidirectional thrust bearing in harsh industrial environments.

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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: Tailored for rolling mill work rolls and backup rolls, fitting European rolling mills’ high-precision, heavy-load requirements.
Other Applications: Broadly applicable to heavy-duty machinery (cranes, mining equipment, wind turbines) needing strong high-load and impact load resistance.