Product Type: Four-Row Tapered Roller Bearing

1. Overview

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2. Basic Dimensions

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3. Structural Features

Comprising a precision-engineered assembly of two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings, this bearing integrates spacers for meticulous clearance control. Its optimized structural geometry ensures robust performance when subjected to combined large radial and certain axial loads.

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4. Load-Carrying Capacity

Radial Load Capacity: Leveraging an advanced design, this bearing achieves a radial load rating 2.5-3.5 times higher than single-row tapered roller bearings, fulfilling the needs of high-precision industrial machinery.
Load Type Adaptability: Tailored for applications where combined radial and axial loads are present (with radial dominance), it also stands up remarkably well to demanding heavy and shock load conditions.

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5. Performance Characteristics

Limiting Speed: Structurally inherently limited in rotational velocity relative to four-row cylindrical roller bearings, this configuration nevertheless provides optimal performance in high-load operational contexts.
Axial Load Capacity: The assembly accommodates dual-directional axial forces and maintains operational integrity as a thrust bearing within rigorous 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

Mission-Critical Application: Work rolls and backup rolls in rolling mill operations.
Performance-Critical Applications: Also specified for heavy-duty equipment including cranes, mining machinery, and wind turbines – applications where withstanding substantial and shock loads is a fundamental requirement.