Specifications :

drawings may differ from products	Boundary Dimensions	d	400	mm
		D	600	mm
		B	356	mm
		T	356	mm
	Basic Load Ratings	Cr	4160	kN
	Basic Load Ratings	C0r	10400	kN
	Speed Ratings	Grease	240	rpm
	Speed Ratings	Oil	320	rpm
	Weight		317.00	kg

Features :

Product Type: Four-Row Tapered Roller Bearing

Model No.: 381080

1. Overview

Targeting the rigorous demands of heavy-duty machinery, the 381080 four-row tapered roller bearing is a high-performance component. Its ability to excel at withstanding heavy and impact loads makes it an ideal choice for the core equipment driving industrial applications.

2. Basic Dimensions

Dimension Type	Value
Inner Diameter (d)	400mm
Outer Diameter (D)	600mm
Thickness (B)	356mm

3. Structural Features

Component Composition: Boasting a composite structure tailored for stability, the bearing integrates two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings, all working together to ensure uniform, stable force distribution.
Clearance Adjustment: Equipped with special inter-ring spacers, the bearing enables accurate clearance adjustment— a vital feature for adapting to the varying requirements of different working conditions.
Load-Bearing Advantage: The bearing’s greatest strength is its structural optimization, which delivers simultaneous large radial and certain axial load resistance, significantly boosting overall load-bearing efficiency and operational reliability.

4. Load-Carrying Capacity

Radial Load Capacity: What sets it apart is a radial load capacity 2.5–3.5 times that of single-row tapered roller bearings, which guarantees unshakable stability under high-load conditions.
Load Type Adaptability: Its core strength lies in excelling at combined radial-axial loads (radial primary) and withstanding heavy/impact loads in harsh environments—far exceeding standard bearing performance.

5. Performance Characteristics

Limiting Speed: Structural constraints → lower limiting speed vs. four-row cylindrical roller bearings (trade-off for better load-bearing capacity).
Axial Load Capacity: Bidirectional axial load resistance; deployable as bidirectional thrust bearing, meets dual-directional axial load requirements.

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: Designed specifically for rolling mill work/backup rolls, perfectly matching European rolling mill’s high-precision and heavy-load requirements.
Other Applications: Suitable for heavy-duty machinery (cranes, mining equipment, wind turbines) that need excellent high-load and impact load resistance.

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Subject :four-row tapered roller bearing 381080