Specifications :

drawings may differ from products	Boundary Dimensions	d	280	mm
		D	395	mm
		B	288	mm
		T	288	mm
	Basic Load Ratings	Cr	2890	kN
	Basic Load Ratings	C0r	7450	kN
	Speed Ratings	Grease	420	rpm
	Speed Ratings	Oil	510	rpm
	Weight		116.00	kg

Features :

Product Type: Four-Row Tapered Roller Bearing

Model No.: 380656-1

1. Overview

Classified as a high-performance component, the 380656-1 four-row tapered roller bearing is specifically developed to meet the operational demands of heavy-duty machinery. Its exceptional capacity to withstand heavy loads and impact loads renders it an optimal selection for critical industrial equipment.

2. Basic Dimensions

Dimension Type	Value
Inner Diameter (d)	280mm
Outer Diameter (D)	395mm
Thickness (B)	288mm

3. Structural Features

Component Composition: Two double-raceway inner rings, one double-raceway outer ring, two single-raceway outer rings.
Clearance Adjustment: Inner-outer ring spacers for precise clearance adjustment.
Load-Bearing Advantage: Optimized structure bears large radial loads and certain axial loads at once.

4. Load-Carrying Capacity

Radial Load Capacity: ~2.5–3.5x stronger than single-row tapered roller bearings, ensuring reliability under high loads.
Load Type Adaptability: Excels at combined radial-axial loads (radial dominant) and withstands heavy/impact loads in harsh environments.

5. Performance Characteristics

Limiting Speed: Users will find the speed rating moderately lower than four-row cylindrical types, though entirely sufficient for the most demanding heavy-load applications.
Axial Load Capacity: With robust bidirectional axial load capability, this solution assures reliable thrust bearing performance in extreme industrial settings.

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 Field: Application in rolling mill work rolls and backup rolls.
Broader Field: Utilization in heavy-duty mechanical systems encompassing cranes, mining machinery, and wind turbines, all of which demand excellent resistance to high and impact loads.

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Subject :four-row tapered roller bearing 380656-1