2306 Self-aligning Ball Bearings

2306 Self-Aligning Ball Bearing / 2306K | Bearing Steel And Stainless Steel

The 2306 self-aligning ball bearing is a high-performance double-row rolling bearing featuring a spherical outer raceway, designed for reliable light and medium-duty industrial operation. It effectively compensates for shaft misalignment and installation deflection, delivering low-friction, quiet and stable rotation. Available in standard straight bore 2306, tapered bore 2306K, bearing steel and stainless steel variants, this bearing performs consistently in dry, humid and sanitary working environments.

Difference Between 2306 and 2306K

2306 (Standard Bore): Equipped with a straight cylindrical inner bore for fixed shaft fitting. It offers simple installation, stable positioning and easy disassembly, ideal for standard industrial machinery with fixed assembly and no frequent adjustment requirements.

2306K (Tapered Bore): Features a 1:12 standard tapered inner bore, compatible with universal adapter sleeves. It supports flexible mounting and precise clearance adjustment for effortless maintenance and calibration, perfect for variable-speed transmission and frequently debugged mechanical equipment.

Material Differences: Bearing Steel vs Stainless Steel

Bearing Steel (GCr15): GCr15 bearing steel is the cost-effective standard material for 2306 and 2306K bearings. Professional heat treatment ensures high hardness, excellent wear resistance and strong anti-fatigue performance. It maintains stable load capacity and smooth operation under conventional dry conditions, suitable for general industrial machinery and transmission systems.

Stainless Steel: Stainless steel 2306/2306K bearings provide excellent rust-proof, oxidation and weak corrosion resistance. They effectively resist moisture, humid air and minor contamination to prevent 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 delivers stable light-medium load capacity with low-noise, smooth operation. Dual bore designs meet fixed and adjustable installation demands. Two material grades balance cost performance and anti-corrosion ability. Standard size enables quick installation and extended service life.

Application Scenarios

2306 and 2306K self-aligning ball bearings are widely used in medium and small motors, industrial fans, textile machinery, conveyor systems and general industrial automation equipment. Bearing steel models suit conventional indoor mechanical devices; stainless steel versions fit food processing machinery, medical equipment and high-humidity environment machinery. 2306K tapered bore bearings are optimal for equipment requiring frequent debugging and maintenance.