Specifications :

drawings may differ from products	Boundary Dimensions	d	300	mm
		D	500	mm
		B	370	mm
		T	370	mm
	Basic Load Ratings	Cr	3390	kN
	Basic Load Ratings	C0r	8710	kN
	Speed Ratings	Grease	340	rpm
	Speed Ratings	Oil	430	rpm
	Weight		285.00	kg

Features :

Product Type: Four-Row Tapered Roller Bearing

Model No.: 381160

1. Overview

For heavy-duty machinery applications, the 381160 four-row tapered roller bearing is a high-performance component specifically engineered to excel. Its outstanding heavy and impact load-bearing capacity makes it ideal for the demands of key industrial equipment.

2. Basic Dimensions

Dimension Type	Value
Inner Diameter (d)	300mm
Outer Diameter (D)	500mm
Thickness (B)	370mm

3. Structural Features

Component Composition: It consists of two inner rings (double raceway), one outer ring (double raceway), and two outer rings (single raceway).
Clearance Adjustment: Radial and axial clearance can be precisely tuned via spacers between the inner and outer rings.
Load-Bearing Advantage: Structural optimization grants the ability to concurrently sustain heavy radial loads and specific axial loads.

4. Load-Carrying Capacity

Radial Load Capacity: A key advantage lies in its radial load capacity—2.5–3.5 times stronger than single-row tapered roller bearings—ensuring reliability even under high-load stress.
Load Type Adaptability: Its core strength is adapting to combined radial-axial loads (radial main force) and withstanding heavy/impact loads in harsh working environments.

5. Performance Characteristics

Limiting Speed: Sliding contact between the rib and roller end face in the structural design raises operational friction, leading to a relatively lower limiting speed than other bearings of the same size, such as four-row cylindrical roller bearings.
Axial Load Capacity: Unlike single-row tapered roller bearings with only unidirectional axial load capacity, the four-row structure offers excellent bidirectional axial load performance. It ensures reliable axial positioning and effectively controls thrust during the rolling process. While managing bidirectional thrust effectively, it primarily supports heavy radial loads, making it highly suitable for rolling mills.

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: Specifically designed for the work rolls and backup rolls in rolling mill systems, this product perfectly matches the stringent high-precision and heavy-load requirements of European-standard rolling mill equipment.
Other Applications: It finds extensive application in various heavy-duty mechanical equipment such as cranes, mining machinery, and wind turbines—equipment that requires superior resistance to high loads and impact loads.

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Subject :Steel mill four-row tapered roller bearing 381160