Product Type: Four-Row Tapered Roller Bearing

1. Overview

Designed to perform in heavy-duty machinery, the 381096 four-row tapered roller bearing offers outstanding performance. With superior ability to support heavy and impact loads, it is recognized as an ideal choice for key industrial equipment.

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2. Basic Dimensions

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3. Structural Features

Component Composition: Featuring a premium composite raceway structure (two double-raceway inner rings, one double-raceway outer ring, two single-raceway outer rings), superior stability is effectively ensured.

Clearance Adjustment: Precision spacers located between inner and outer rings support flexible clearance adjustment to meet various operating demands.
Load-Bearing Advantage: The optimized structure provides excellent load-bearing capacity, easily supporting high radial loads and specific axial loads at once.

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4. Load-Carrying Capacity

Radial Load Capacity: It offers 2.5–3.5 times the radial load-carrying capability of single-row tapered roller bearings, delivering stable reliability even under extreme heavy-load conditions.
Load Type Adaptability: It performs excellently under combined radial and axial loads with radial loads as the main component, and effectively resists heavy loads and impact forces in harsh working environments.

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5. Performance Characteristics

Limiting Speed: Owing to the sliding contact between the rib and roller end face inherent in its structure, four-row tapered roller bearings experience increased friction in operation. Consequently, their limiting speed is relatively lower in comparison with other bearings of the same size, typified by four-row cylindrical roller bearings.
Axial Load Capacity: Unlike single-row tapered roller bearings, which can only accommodate axial loads in one direction, four-row tapered roller bearings are purpose-built to manage heavy bidirectional axial loads. This feature ensures accurate axial location of the shaft and effective management of thrust produced in the rolling process. Notably, while offering outstanding resistance to bidirectional thrust, it mainly sustains heavy radial loads, ideal for demanding combined load 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

Primary Application: It is primarily applied to work rolls and backup rolls in rolling mills, excellently adapting to the rigorous operating conditions of the local rolling industry.
Other Applications: Suitable for diverse heavy-duty equipment including cranes, mining machinery and wind turbines, it features outstanding ability to bear heavy loads and impact loads in complex working situations.