The CR 4390 is engineered for extreme reliability in heavy industrial applications, specializing in handling simultaneous high radial and thrust loads. Constructed from CR's proprietary vacuum-degassed, high-purity bearing steel (equivalent to SAE 52100), this unit features optimally crowned rollers and precision-machined raceways that minimize stress peaks and reduce edge loading. The optimized contact geometry ensures superior load distribution, resulting in lower operating temperatures and significantly extended fatigue life. Designed as a separable assembly (cone and cup), the 4390 allows for precise setting of running clearance during mounting, offering flexibility for demanding differential and gearbox configurations.
Selecting the CR 4390 translates directly to minimized downtime and reduced Total Cost of Ownership (TCO) for critical machinery. Its robust design is specifically tailored for rigorous environments found in mining conveyors, heavy-duty truck wheel ends, construction equipment, and industrial gear reducers where shock loads and continuous operation are standard. With enhanced surface finishes that improve lubricant retention and reduce friction, this bearing delivers predictable, long-lasting performance, ensuring that maintenance intervals are extended far beyond standard industry benchmarks. The CR 4390 sets the benchmark for operational efficiency and durability in highly stressed industrial drivelines.
Key Features
Optimized Roller Crowning: Minimizes stress concentrations and extends bearing service life under misalignment.
CR Grade Heat Stabilization: Ensures dimensional stability and maintains performance integrity up to 150°C (302°F).
Case-Hardened Raceways: Provides superior shock resistance and enhanced wear durability.
Separable Design: Facilitates easier installation and allows for precise axial setting/preload adjustments.
High Radial and Axial Load Capacity: Designed for combined high-stress environments in industrial drivelines.
Reduced Friction Torque: Lower operational heat generation leads to enhanced energy efficiency and extended lubricant life.
