2201 / 2201-2RS Self-Aligning Ball Bearing | Double Row Wide Bore Bearings

The 2201 self-aligning ball bearing is a compact wide-width double-row radial bearing, available in open type 2201 and double rubber sealed 2201-2RS models. Built with a spherical outer raceway, this bearing delivers automatic shaft self-alignment, effectively compensating for minor shaft deflection, assembly misalignment and running vibration. It primarily supports radial loads with tolerance for slight bidirectional axial thrust, offering stable low-to-medium speed operation. Compact in size and highly adaptable, the 2201 series is a versatile solution for precision and light-duty industrial machinery.

2201 And 2201-2RS Product Advantages

Featuring a widened double-row ball structure compared to standard 1201 bearings, the 2201 model provides larger load contact areas, better rigidity and smoother rotation. The open 2201 version allows easy grease refilling and routine lubrication, ideal for clean, dry indoor working environments. The upgraded 2201-2RS double rubber sealed design adopts durable contact rubber seals on both sides, effectively blocking dust, moisture, dirt and debris while preventing internal grease leakage. Both variants eliminate abnormal noise and premature wear caused by shaft offset, ensuring long-term continuous and low-maintenance operation.

2201 Bearing Material Types And Corresponding Applications

Chrome Bearing Steel: Standard industrial bearing material with high hardness, excellent wear resistance and fatigue durability. It maintains stable precision under continuous medium-speed operation with outstanding cost performance. Widely used in small fans, light conveyor equipment, textile machinery, general automation and conventional light-duty transmission systems.

304 Stainless Steel: Features superior anti-oxidation and rust-proof performance, suitable for humid, dusty and open-air environments. It delivers consistent low-to-medium load stability at an economical cost, perfect for light industrial machinery, civilian automated devices and general indoor precision equipment.

420 Stainless Steel: Combines high hardness and mechanical toughness with mild corrosion resistance. It withstands frequent start-stop friction and weak chemical erosion, retaining accurate self-aligning performance. Commonly applied in precision instruments, optical equipment and portable electromechanical devices.

440C Stainless Steel: Offers ultra-high hardness and exceptional abrasion resistance, adapting to damp workshops and moderately corrosive industrial conditions. It prevents premature wear, jamming and aging, ideal for micro automation equipment, light chemical machinery and precision transmission assemblies.

316 Stainless Steel: Premium marine-grade corrosion-resistant material with excellent salt spray, acid and alkali resistance. It operates steadily in harsh high-humidity and corrosive scenarios, suitable for food sanitation machinery, marine auxiliary parts, chemical test instruments and sterile industrial facilities.

Core Features And Industrial Application Scenarios

The 2201 and 2201-2RS wide self-aligning ball bearings feature compact structure, reliable self-alignment compensation, low-noise smooth rotation and flexible multi-material customization. The 2201-2RS sealed model is highly suitable for harsh, dusty and humid working conditions, greatly extending service life and reducing maintenance frequency. These bearings are widely adopted in precision automation, light manufacturing, ventilation equipment, food processing, chemical and marine auxiliary machinery, providing stable and cost-effective radial bearing solutions for compact medium-speed mechanical systems.