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 experimental component is composed of two inner rings with double raceways, one outer ring with a double raceway, and two outer rings with single raceways.

Clearance Adjustment: To achieve precise clearance tuning, spacers are arranged between the inner and outer rings of the component.
Load-Bearing Advantage: Structural optimization is adopted to realize the simultaneous bearing of large radial loads and a certain degree of axial loads, improving the overall load capacity.

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4. Load-Carrying Capacity

Radial Load Capacity: How strong is its radial load capacity? About 2.5–3.5 times stronger than single-row tapered roller bearings, so it’s reliable under high loads.
Load Type Adaptability: What loads can it handle? Combined radial-axial (radial main), plus heavy and impact loads in harsh working environments.

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5. Performance Characteristics

Limiting Speed: The inherent structural design, featuring sliding contact between the rib and roller end face, leads to increased friction during operation. Thus, the limiting speed of four-row tapered roller bearings is comparatively lower than other similar-sized bearings including four-row cylindrical roller bearings.
Axial Load Capacity: Whereas single-row tapered roller bearings are only capable of unidirectional axial load capacity, four-row tapered roller bearings are constructed to withstand heavy bidirectional axial loads. This bidirectional function ensures precise shaft positioning and efficiently handles thrust from the rolling process. It is important to note that while providing excellent bidirectional thrust performance, it primarily undertakes heavy radial loads.

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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: Rolling mill work rolls and backup rolls are its primary target, with a design that perfectly aligns with European rolling mills’ high-precision and heavy-load requirements.
Other Applications: In industrial settings requiring heavy-duty performance, it is widely used in cranes, mining machinery, wind turbines, and similar equipment needing excellent high-load and impact load resistance.