Product Type:Four-Row Tapered Roller Bearing

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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.
Clearance Adjustment: Spacers between inner and outer rings for precise clearance tuning.
Load-Bearing Advantage: Structural optimization enables simultaneous bearing of large radial loads and certain axial loads.

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4. Load-Carrying Capacity

Radial Load Capacity: Boasts a radial load capacity approximately 2.5-3.5 times that of single-row tapered roller bearings, guaranteeing stable operation under high-load conditions.
Load Type Adaptability: Excels in handling combined radial and axial loads (with radial loads as the primary force) and withstands heavy loads and impact loads in harsh operating environments.

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5. Performance Characteristics

Limiting Speed: Due to structural constraints, its limiting speed is relatively lower than that of four-row cylindrical roller bearings—this is a deliberate trade-off to achieve enhanced load-bearing capabilities.
Axial Load Capacity: It can withstand axial loads in both directions and is deployable as a bidirectional thrust bearing, effectively meeting dual-directional axial load demands.

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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: Primarily applied to work rolls and backup rolls of rolling mills, fully compliant with the harsh operating conditions of the local rolling industry.
Other Applications: Suitable for a variety of heavy-duty mechanical equipment including cranes, mining machinery, and wind turbines, with the capability to withstand high loads and impact loads in complex operating environments.