Product Type: Four-Row Tapered Roller Bearing

1. Overview

The 382030X2 four-row tapered roller bearing is a high-performance component specially engineered for heavy-duty machinery. With exceptional heavy-duty and impact load resistance, it represents an ideal solution for key industrial equipment.

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2. Basic Dimensions

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3. Structural Features

Component Composition: The advanced composite raceway structure, consisting of two double-raceway inner rings, one double-raceway outer ring and two single-raceway outer rings, guarantees outstanding stability.
Clearance Adjustment: Precision spacers are integrated between the inner and outer rings, enabling flexible clearance adjustment to suit various operating conditions.
Load-Bearing Advantage: Optimized structure provides exceptional load capacity, effortlessly supporting high radial loads and certain axial loads at the same time.

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4. Load-Carrying Capacity

Radial Load Capacity: The proposed bearing’s radial load capacity is 2.5–3.5x that of single-row tapered roller bearings, which aligns with our project’s requirement for stable operation under high-load conditions.
Load Type Adaptability: Its superior performance in handling combined radial-axial loads (radial primary) and withstanding heavy/impact loads in harsh environments meets the performance benchmarks for the target equipment.

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5. Performance Characteristics

Limiting Speed: Due to structural factors including the sliding contact between the rib and roller end, these bearings create more friction while running. Therefore, their limiting speed is relatively lower than that of four-row cylindrical roller bearings and similar-size types.
Axial Load Capacity: Different from single-row tapered roller bearings with unidirectional axial load capacity, the four-row structure is specially constructed to carry heavy bidirectional axial loads. This ensures reliable axial positioning of the rotating shaft and effectively handles rolling thrust. As it primarily supports heavy radial loads, it is extremely 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: The product is tailor-made for rolling mill work and backup rolls. European rolling mills have strict high-precision and heavy-load needs, and this part checks all the boxes.
Other Applications: It’s not just for rolling mills—you’ll find it on cranes lifting heavy weights, mining equipment digging tough ground, and wind turbines spinning in strong winds. All these need to handle high loads and impacts well.