Product Type: Four-Row Tapered Roller Bearing

1. Overview

The 380688 four-row tapered roller bearing is tailored for your heavy-duty machinery needs— a high-performance part exclusive to this sector. Its excellent heavy and impact load resistance makes it the perfect choice for your critical industrial equipment.

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2. Basic Dimensions

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3. Structural Features

Component Composition: The bearing is composed of two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings. This structural design is crucial for ensuring stable force distribution.
Clearance Adjustment: The integration of special spacers between the inner and outer rings provides a mechanism for accurate clearance adjustment. This feature is essential for the bearing to adapt to the varying mechanical demands of different working conditions, as confirmed by field testing.
Load-Bearing Advantage: Structural optimization has been implemented to enhance the bearing’s load-bearing capabilities. The resulting design allows for the simultaneous withstanding of large radial loads and certain axial loads, leading to a measurable improvement in the bearing’s overall load-bearing efficiency.

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4. Load-Carrying Capacity

How strong is its radial load capacity? 

About 2.5–3.5 times that of single-row tapered roller bearings, which guarantees it runs stable when loads are high.

What loads can it handle?

 Combined radial-axial loads (radial main) and it can take heavy/impact loads in harsh operating environments—perfect for heavy-duty work.

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5. Performance Characteristics

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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: For European rolling mill operators seeking high-precision, heavy-load performance, this product is specifically designed for work rolls and backup rolls, delivering a tailored solution.
Other Applications: In industries like construction, mining, and renewable energy, it is widely applied to cranes, mining machinery, and wind turbines—equipment that faces constant high loads and impact forces.