The CR 21759 is a robust, double-row spherical roller bearing engineered for extreme industrial environments where severe misalignment, heavy shock loads, and high radial forces are routine. Featuring two rows of barrel-shaped rollers operating in a common concave outer ring raceway, this design inherently compensates for shaft deflection and mounting errors up to 2 degrees. The use of premium CR-grade carburizing steel ensures superior fatigue life, while the reinforced brass cage provides maximum stability and reliability even under high operating temperatures and acceleration/deceleration cycles. Precision-machined raceways minimize friction and heat generation, delivering maximum efficiency in demanding applications like vibrating screens, mining equipment, and large industrial fans.
Optimized for reliability and reduced total cost of ownership, the CR 21759 significantly extends service intervals and minimizes unscheduled downtime. Its high basic dynamic load rating (C) and static load rating (C0) make it the ideal choice for mission-critical machinery in heavy industries such as pulp and paper, metal processing, and bulk material handling. By choosing the CR brand, you are investing in peak performance derived from decades of bearing technology expertise, ensuring exceptional longevity and operational continuity even when facing unavoidable application stressors. This bearing is built to outperform and outlast standard alternatives in the most challenging operational contexts.
Key Features
Self-Aligning Capability: Accommodates dynamic misalignment up to 2 degrees without reducing bearing life.
High Load Density: Enhanced internal geometry provides exceptional basic dynamic and static load ratings.
Durable Brass Cage (MB): Provides superior roller guidance and withstands higher temperatures and vibration compared to standard steel cages.
Extended Service Life: Manufactured from premium CR-grade steel, ensuring maximum wear resistance and fatigue strength.
Reduced Friction & Heat: Optimized raceway profiles minimize friction torque for cooler running and energy savings.
Tapered Bore Design: Facilitates easy mounting and dismounting using hydraulic sleeves or adapter components.
