690RX2966

The 690RX2966 four-row cylindrical roller radial bearing is designed to withstand extreme radial loads in high-pressure industrial environments, particularly for steel and aluminum mill applications. Its multi-row design (four rows of staggered rollers) evenly distributes stresses across the bearing's 2966 mm outer diameter, enabling it to withstand radial loads in excess of 12,000 kN while maintaining operational stability at speeds up to 500 rpm. The bearing's inner ring features a tapered bore (1:30 ratio) for a secure interference fit with the rolls, and is paired with a precision-ground outer ring to minimize deflection under uneven load conditions. The optimized logarithmic roller profile reduces edge stresses by 40%, while a brass cage with riveted spacers prevents the rollers from tilting during rapid direction changes. Integrated lubrication channels in the inner ring support forced oil circulation, which is essential for heat dissipation in 24/7 continuous mill operation. Key applications include support roll assemblies in tandem mills, continuous casters, and thick section mill lines.

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