5202 Angular Contact Ball Bearing | Medium-Duty Double Row Bearings

The 5202 angular contact ball bearing is a medium-sized double-row rolling bearing in the 5200 series, upgraded from compact 5201 models with optimized load-bearing structure and inner clearance. Featuring a dual-ball symmetrical contact angle design, it efficiently bears combined moderate radial loads and dual-direction axial thrusts. Compared with single-row bearings, it delivers higher overall rigidity and better running stability under continuous operation. Balancing size, load capacity and versatility, the 5202 bearing is a universal core component for medium-speed, general-duty electromechanical and automated industrial equipment.

Standard Sealing Options And Operational Features

The 5202 bearing supports three mainstream sealing configurations, tailored for diverse industrial working conditions to balance heat dissipation, protection and long-term operational stability:

Open Type: No built-in seals for maximum ventilation and heat dissipation. It allows easy manual and automatic lubrication refills, ideal for enclosed industrial workshops with clean air and stable temperature, suited for long-running medium-speed transmission equipment.

ZZ Metal Shield Type: Dual-sided non-contact metal shields with rigid dustproof performance. It blocks industrial dry dust, particulate debris and floating impurities without increasing operating friction, perfectly suited for dry production lines and general industrial automated machinery.

2RS Rubber Sealed Type: Double-sided flexible rubber contact seals with full coverage protection. It effectively isolates humid air, water mist, oil dirt and fine corrosive particles, locking internal grease to avoid leakage. This maintenance-free design adapts to open, variable and harsh workshop environments.

Bearing Material Specifications And Industry Uses

Chrome Bearing Steel: Standard industrial material for 5202 medium-duty bearings, featuring stable hardness, excellent wear resistance and cyclic fatigue tolerance. It maintains consistent operational precision under long-term composite loads, with prominent cost performance. Widely applied in medium-sized fans, transmission pumps, packaging machinery and general industrial automation equipment.

304 Stainless Steel: Offers reliable oxidation and rust resistance for conventional humid and dusty working scenarios. It retains stable load capacity and rotational smoothness, serving as a cost-effective anti-corrosion solution for light manufacturing equipment and civilian electromechanical assemblies.

420 Stainless Steel: Combines sturdy hardness and mechanical toughness, resisting frequent start-stop friction and weak chemical erosion. It ensures durable precision operation, ideal for detection instruments, mechanical accessories and general precision electromechanical devices.

440C Stainless Steel: High-strength wear-resistant material with strong adaptability to damp and moderately corrosive environments. It delays mechanical aging and precision wear, suitable for light chemical equipment and continuous-cycle automated machinery.

316 Stainless Steel: Premium marine-grade anti-corrosion material with superior salt spray, acid and alkali resistance. It operates steadily in harsh corrosive conditions, perfect for food sanitation equipment, marine auxiliary machinery and chemical testing devices.

Core Strengths And Application Scenarios

The 5202 double-row angular contact bearing features upgraded medium-load capacity, symmetrical stress structure, low operational vibration and strong universal adaptability. Diversified sealing and material options enable flexible deployment in multiple complex environments. It is widely utilized in industrial automation, light manufacturing, ventilation and transmission equipment, food processing, chemical and marine auxiliary machinery, providing stable, cost-effective and durable dual-load bearing solutions for medium-speed general industrial mechanical systems.