Double Row Self Aligning Ball Bearing Custom 17x40x16 Bearing 2203

• Rolling Elements and Raceways: Uses two rows of high-precision steel balls as rolling elements. The inner ring features a double-groove structure supporting both rows of steel balls, while the outer ring raceway is spherical, providing excellent self-aligning performance with up to 3° angular deviation compensation.
• Cage: Typically made of high-quality steel plate through stamping, featuring lightweight structure and good toughness. Some models use nylon cages for better corrosion resistance and self-lubricating properties in humid or slightly corrosive environments.

• Bearing Steel: Inner and outer rings and steel balls made of high-quality bearing steel with hardness HRC60-65 after heat treatment, providing excellent wear resistance, strength, and shape stability.
• Cage Material: Steel plate cages for general working conditions; nylon cages for corrosion resistance and self-lubrication in demanding environments.

• Excellent Self-Aligning Performance: Spherical outer ring raceway design adapts to axis deviations up to 3°, solving installation errors and shaft deformation issues.
• Strong Radial Load-Carrying Capacity: Two rows of steel balls increase contact area, enabling large radial loads and bidirectional axial loads.
• Low Friction and High Stability: High-precision rolling elements and optimized raceway fit reduce friction, improve efficiency, and ensure stable high-speed operation.
• Good Environmental Adaptability: Multiple cage materials and sealing forms adapt to various working environments including dry, humid, and dusty conditions.

Widely used in industrial equipment including fans, water pumps, reducers, textile machinery, printing machinery, and medical equipment. Self-aligning performance compensates for shaft deflection in fans and pumps, while handling large radial loads in reducers and textile machinery.