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: The component consists of two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings.
Clearance Adjustment: Precise clearance tuning is achieved through spacers installed between the inner and outer rings.
Load-Bearing Advantage: Via structural optimization, the component is capable of simultaneously bearing large radial loads and a certain magnitude of axial loads.

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4. Load-Carrying Capacity

Radial Load Capacity: 2.5–3.5× single-row tapered roller bearings’ radial capacity, reliable under high loads.
Load Type Adaptability: Suitable for combined radial+axial loads (radial primary) + endures heavy/impact loads in harsh working conditions.

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5. Performance Characteristics

Limiting Speed: With a structurally determined speed rating below that of four-row cylindrical roller bearings, this solution is ideally configured for deployment in heavy-load operational scenarios.
Axial Load Capacity: Featuring bidirectional axial load tolerance, the design guarantees effective thrust bearing functionality within harsh industrial contexts.

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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

Target Application: Primarily targets work rolls and backup rolls in rolling mills.
Diverse Applications: Also ensures robust performance in other heavy-duty machinery like cranes, mining equipment, and wind turbines, where enduring high and impact loads is a key operational challenge.