Specifications :

drawings may differ from products	Boundary Dimensions	d	420	mm
		D	760	mm
		B	500	mm
		T	500	mm
	Basic Load Ratings	Cr	5540	kN
	Basic Load Ratings	C0r	11980	kN
	Speed Ratings	Grease	190	rpm
	Speed Ratings	Oil	260	rpm
	Weight		1040.00	kg

Features :

Product Type: Four-Row Tapered Roller Bearing

Model No.: 380284X2

1. Overview

380284X2 four-row tapered roller bearing is a high-performance component exclusively designed for heavy-duty mechanical systems. Experimental data confirms its exceptional capability in withstanding heavy loads and impact loads, validating its status as an ideal selection for essential equipment in industrial applications.

2. Basic Dimensions

Dimension Type	Value
Inner Diameter (d)	420mm
Outer Diameter (D)	760mm
Thickness (B)	500mm

3. Structural Features

Component Composition: It’s a composite design with two inner rings that have double raceways, one outer ring with a double raceway, and two outer rings with single raceways. This setup makes sure force is distributed stably.
Clearance Adjustment: There are special spacers between the inner and outer rings— these let us adjust the bearing’s clearance accurately, so it works well no matter what the working conditions are.
Load-Bearing Advantage: We optimized the structure, so now the bearing can handle big radial loads and some axial loads at the same time. That’s made its overall load-bearing efficiency a lot better.

4. Load-Carrying Capacity

Radial Load Capacity: Targeting equipment with high-load demands, this bearing offers a radial load capacity 2.5–3.5 times that of single-row tapered roller bearings, ensuring stable performance under strenuous conditions.
Load Type Adaptability: Designed for harsh operating environments, it excels at handling combined radial-axial loads (radial as main force) and resists the heavy loads and impact loads common in heavy-duty industries.

5. Performance Characteristics

Limiting Speed: While structural constraints result in a lower limiting speed than four-row cylindrical roller bearings, this is no design flaw— it’s a deliberate trade-off that unlocks significantly enhanced load-bearing capabilities, the bearing’s core competitive advantage.
Axial Load Capacity: Its standout feature is bidirectional axial load resistance; deployable as a bidirectional thrust bearing, it effectively meets dual-directional axial load demands that unidirectional bearings cannot address.

6. Material & Manufacturing

Component	Material
Inner & Outer Rings	Carburized Steel
Rolling Elements	Bearing Steel
Cage	Stamped Steel Plate

Heat Treatment: Special heat treatment process applied to enhance hardness, wear resistance, and fatigue life.

7. Application Fields

Primary Application: Engineered exclusively for the work roll and backup roll assemblies of rolling mills, this bearing delivers a perfect match for the rigorous high-precision and heavy-load demands imposed by European rolling mill equipment.
Other Applications: It is extensively suitable for deployment on heavy-duty mechanical assets including cranes, mining machinery, and wind turbines, all of which require outstanding resistance to sustained high loads and intermittent impact loads.

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Subject :four-row tapered roller bearing 380284X2