2301 Self-aligning Ball Bearings

2301 Self-Aligning Ball Bearing / 2301K | Bearing Steel And Stainless Steel

The 2301 self-aligning ball bearing is a compact double-row rolling bearing with a spherical outer raceway, suitable for light and medium-duty industrial equipment. It features excellent self-aligning performance to compensate for shaft misalignment and installation deflection, delivering low-friction, low-noise and stable running performance. Available in standard straight bore 2301, tapered bore 2301K, bearing steel and stainless steel options, this bearing adapts to dry, humid and sanitary working conditions for versatile industrial applications.

Difference Between 2301 and 2301K

2301 (Standard Bore): Equipped with a straight cylindrical inner bore for fixed shaft installation. It features simple assembly, stable operation and easy disassembly, ideal for light and medium-load machinery with fixed installation and no frequent adjustment needs.

2301K (Tapered Bore): Adopts a 1:12 standard tapered inner bore, compatible with universal adapter sleeves. It allows flexible mounting and precise clearance adjustment, supporting convenient maintenance and calibration, perfect for variable-speed transmission and frequently adjusted mechanical equipment.

Material Differences: Bearing Steel vs Stainless Steel

Bearing Steel (GCr15): GCr15 bearing steel is the cost-effective mainstream material for 2301 and 2301K bearings. After professional heat treatment, it provides high hardness, excellent wear resistance and strong anti-fatigue performance. It maintains stable load capacity and smooth rotation under conventional dry environments, suitable for general industrial machinery and transmission systems.

Stainless Steel: Stainless steel 2301/2301K bearings offer superior rust-proof, oxidation and weak corrosion resistance. They effectively resist moisture, humid air and minor contamination to avoid precision loss and corrosion failure, making them ideal for damp, clean, sanitary and mild outdoor working scenarios.

Product Features

Reliable self-aligning capability offsets mounting errors and shaft deflection. Double-row ball structure ensures stable light-medium load capacity with quiet and smooth operation. Dual bore designs meet fixed and adjustable installation requirements. Two material grades support economical standard use and anti-corrosion precision applications. Compact size enables easy installation and long service life.

Application Scenarios

2301 and 2301K self-aligning ball bearings are widely used in small and medium motors, industrial fans, textile machinery, light conveyor systems and general automation devices. Bearing steel models fit conventional indoor mechanical equipment; stainless steel versions apply to food processing machinery, medical devices and humid environment equipment. 2301K tapered bore bearings are preferred for equipment requiring frequent debugging and assembly adjustment.