Product Type: Four-Row Tapered Roller Bearing

1. Overview

The 3811/530 four-row tapered roller bearing is a high-performance component crafted exclusively for heavy-duty machinery. Its remarkable capability to support heavy loads and absorb impact loads makes it the perfect choice for essential industrial equipment.

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2. Basic Dimensions

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3. Structural Features

Component Composition: A professionally designed composite raceway structure (two double-raceway inner rings, one double-raceway outer ring, two single-raceway outer rings) ensures outstanding operational stability.
Clearance Adjustment: Built-in precision spacers permit flexible clearance adjustment between inner and outer rings, fitting various industrial operating scenarios.
Load-Bearing Advantage: Structural optimization results in superior load-bearing performance, easily handling large radial loads and a certain amount of axial loads at once.

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4. Load-Carrying Capacity

Radial Load Capacity: Offering a radial load capacity 2.5–3.5 times greater than single-row tapered roller bearings, it guarantees stable reliability even in the harshest high-load applications.
Load Type Adaptability: It operates superbly under combined radial and axial loads (with radial loads as the main component) and effectively withstands heavy loads and impacts in demanding conditions.

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5. Performance Characteristics

Limiting Speed: Due to the structural design featuring sliding contact between the rib and roller end face, operation of four-row tapered roller bearings involves higher friction. This results in a comparatively lower limiting speed relative to other bearings of similar size.
Axial Load Capacity: While single-row tapered roller bearings are restricted to one-way axial loads, four-row tapered roller bearings are specially designed to carry heavy axial loads in both directions. This bidirectional ability ensures accurate shaft positioning and efficient control of thrust during rolling. It mainly undertakes heavy radial loads, making it highly suitable for complex load scenarios.

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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 used in the work rolls and backup rolls of rolling mills, it is highly compatible with the tough operating environment of the rolling sector.
Other Applications: An ideal solution for heavy-duty mechanical equipment such as cranes, mining machinery and wind turbines, it delivers outstanding performance against high loads and impact loads in complex working scenarios.