Specifications :

drawings may differ from products	Boundary Dimensions	d	360	mm
		D	480	mm
		B	375	mm
		T	375	mm
	Basic Load Ratings	Cr	3250	kN
	Basic Load Ratings	C0r	11800	kN
	Speed Ratings	Grease	300	rpm
	Speed Ratings	Oil	380	rpm
	Weight		197.00	kg

Features :

Product Type: Four-Row Tapered Roller Bearing

Model No.: 380672

1. Overview

The 380672 four-row tapered roller bearing, a high-performance component optimized for durability, is specifically engineered to meet the rigorous demands of heavy-duty machinery. Its outstanding ability to bear continuous heavy loads and intermittent impact loads makes it a perfect choice for critical key industrial equipment.

2. Basic Dimensions

Dimension Type	Value
Inner Diameter (d)	360mm
Outer Diameter (D)	480mm
Thickness (B)	375mm

3. Structural Features

Component Composition: Unlike conventional structures, this component includes two double-raceway inner rings, one double-raceway outer ring, and two single-raceway outer rings for enhanced rigidity.
Clearance Adjustment: Compared with fixed-clearance designs, spacers between inner and outer rings enable precise clearance tuning, adapting to variable working conditions.
Load-Bearing Advantage: Through structural optimization, it achieves simultaneous bearing of large radial loads and certain axial loads, surpassing the load capacity of traditional components.

4. Load-Carrying Capacity

Radial Load Capacity: This study verifies that the radial load capacity is 2.5–3.5 times stronger than single-row tapered roller bearings, which ensures reliable performance under high-load conditions critical to industrial applications.
Load Type Adaptability: It shows excellent performance in combined radial-axial load scenarios (radial loads as the main force) and can withstand heavy loads and impact loads in harsh working environments, as validated by test data.

5. Performance Characteristics

Limiting Speed: Owing to structural factors such as the sliding contact between the rib and roller end face, these bearings generate more friction while operating. Therefore, their limiting speed is lower than comparable bearings like four-row cylindrical roller bearings.
Axial Load Capacity: Unlike single-row tapered roller bearings that can only resist axial loads in one direction, four-row tapered roller bearings are specially built to carry heavy axial loads in both directions. This dual-direction capability enables precise axial positioning and efficient thrust control. While performing strongly in bidirectional thrust, it primarily sustains heavy radial loads for rolling mill applications.

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 for rolling mill work/backup rolls → matches European rolling mills’ high-precision, heavy-load requirements.
Other Applications: Widely used in cranes, mining machinery, wind turbines—heavy-duty equipment needing good high-load/impact load resistance.

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Subject :Impact-resistant four-row tapered roller bearing for harsh environments 380672