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: Targeting the need for stable force distribution in rolling mills and heavy machinery, the bearing’s composite structure includes two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings.
Clearance Adjustment: To adapt to the diverse working conditions of industrial equipment, special spacers between inner and outer rings provide accurate bearing clearance adjustment capabilities.
Load-Bearing Advantage: In high-load scenarios, the bearing’s structural optimization delivers simultaneous large radial and certain axial load resistance, effectively improving overall load-bearing efficiency for critical machinery.

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4. Load-Carrying Capacity

Radial Load Capacity: The bearing’s standout feature is its radial load capacity—approximately 2.5–3.5 times that of single-row tapered roller bearings—ensuring stable operation when high loads are applied.
Load Type Adaptability: It excels in two critical areas: handling combined radial-axial loads (radial dominant) and withstanding heavy/impact loads in harsh environments, maximizing operational reliability.

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5. Performance Characteristics

Limiting Speed: Constrained by its structural design, the bearing exhibits a limiting speed that is comparatively lower than that of four-row cylindrical roller bearings. This is a purposeful trade-off implemented to realize improved load-bearing performance and capacity.
Axial Load Capacity: It demonstrates the ability to withstand axial loads from both directions and is suitable for deployment as a bidirectional thrust bearing, thereby effectively meeting the requirements associated with dual-directional axial load applications.

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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: This product is specifically engineered for the work rolls and backup rolls of rolling mills, and it perfectly aligns with the stringent high-precision and heavy-load operational requirements of European rolling mill equipment.
Other Applications: It boasts broad applicability across a range of heavy-duty mechanical equipment, including cranes, mining machinery, and wind turbines—all of which mandate exceptional resistance to high loads and impact loads.