Specifications :

drawings may differ from products	Boundary Dimensions	d	150	mm
		D	210	mm
		T	80	mm
		B	36	mm
		C	62	mm
	Basic Load Ratings	Cr	385	kN
	Basic Load Ratings	Cor	795	kN
	Speed Ratings	Grease	1200	rpm
	Speed Ratings	Oil	1500	rpm
	Weight		9.32	kg

Features :

Product Type: Double-Row Tapered Roller Bearing

Model No.: 352930X2

1. Overview

Double-row tapered roller bearings are high-strength bearing parts tailored for heavy-duty industrial scenarios. Boasting superior rigidity, steady running performance and outstanding overall load-bearing capacity, they adapt well to complex combined load working environments, acting as core supporting components for metallurgy, mining and various heavy machinery facilities.

2. Basic Dimensions

Dimension Type	Value
Inner Diameter (d)	150mm
Outer Diameter (D)	210mm
Thickness (B)	36mm

3. Structural Features

Component Composition: It is assembled with two groups of tapered rollers, double-row raceway inner ring, integral outer ring and high-precision rigid cage, which features compact overall structure and excellent integration performance.
Clearance Adjustment: It is designed with adjustable inner clearance structure, enabling accurate preload setting and clearance control in line with actual operating conditions.
Load-Bearing Advantage: The symmetric double-row structure greatly boosts overall rigidity, allowing it to bear heavy radial loads and bidirectional axial loads meanwhile with evenly distributed internal stress.

4. Load-Carrying Capacity

Radial Load Capacity: It delivers stronger radial load carrying performance than single-row tapered roller bearings, perfectly suited for long-term heavy-load running operation.

Load Type Adaptability: Optimized to adapt to combined load conditions mainly with radial loads and assisted by bidirectional axial loads. It can steadily bear heavy loads, alternating loads and mechanical impact loads for continuous service.

5. Performance Characteristics

Limiting Speed: Benefiting from tapered roller contact design and well-matched friction structure, this bearing runs steadily under medium and low speed heavy-load working conditions, featuring low operating noise and minor friction loss.

Axial Load Capacity: Unlike single-row tapered roller bearings that only withstand unidirectional axial loads, its symmetrical double-row structure can stably bear bidirectional axial thrust. It enables precise axial positioning of shaft assemblies and effectively counteracts axial displacement and vibration produced during equipment operation.

Operational Stability: Optimized roller layout and perfect raceway fitting greatly minimize running offset and abrasion, guaranteeing long-term continuous and stable operation in harsh industrial working environments.

6. Material & Manufacturing

Inner & Outer Rings: Made of high-purity bearing steel, featuring superior hardness and outstanding anti-deformation performance.

Rolling Elements: Precisely processed tapered rollers ensure even force distribution and remarkable wear resistance.

Cage: Adopts high-strength rigid cage structure, which effectively avoids roller deflection and mutual collision.

Heat Treatment: It undergoes overall quenching and tempering treatment to enhance surface hardness, integral fatigue resistance and service lifespan, fully complying with long-term industrial application standards.

7. Application Fields

Primary Application: Extensively applied for roll neck support, transmission support and auxiliary bearing mounting positions of rolling mills and metallurgical facilities.

Other Applications: Ideal for diverse heavy-duty machinery demanding high rigidity and bidirectional load resistance, covering mining equipment, engineering machinery, heavy-duty gearboxes and industrial transmission systems.

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Subject :double-row tapered roller bearing 352930X2 for hot rolling mill