Four Row Tapered Metric Roller Bearings

Four-row tapered metric roller bearings: core support for extremely heavy and complex loads

Four-row tapered metric roller bearings are a high-end category of the tapered roller bearing family designed for extreme heavy-load scenarios. The core feature is the use of four-row tapered rollers and metric-sized tapered raceways to achieve ultimate bearing capacity of radial and bidirectional axial composite loads in a limited installation space. They are suitable for heavy industrial equipment such as metallurgical rolling mills, mining crushers, and large gearboxes that bear extremely large loads and impacts. They are the "heavy-load cornerstone" of transmission under extreme working conditions under the metric system.

From a structural point of view, this type of bearing consists of five parts: an outer ring (with four rows of tapered raceways), an inner ring (with four rows of tapered raceways), four rows of tapered rollers, a cage, and a spacer. The core design revolves around the "four-row layout + metric adaptation". The four rows of rollers are symmetrically distributed, and the conical top of each row of rollers is collinear with the conical top of the inner and outer ring raceways, forming pure rolling contact to avoid sliding friction; the spacer ring between the inner ring and the outer ring is used to accurately adjust the bearing clearance and preload force to ensure that the four rows of rollers are evenly stressed; the cages are mostly made of segmented brass (suitable for heavy-duty, high-temperature scenarios, such as rolling mills) or steel cages (more impact-resistant, such as crushers), which separate each row of rollers and guide them to operate smoothly. The dimensions completely follow metric standards (inner diameter d, outer diameter D, and width B are marked in millimeters), and can directly match the shaft diameter and bearing seat specifications of metric equipment without additional adaptation.Centripetal Bearings,High-Quality Bearings,Industrial Bearings,Explore our premium centripetal and radial ball bearings. Boost your machinery's efficiency today! Shop now for the best deals.