1306 Self-aligning Ball Bearings

1306 Self-Aligning Ball Bearing / 1306K | Bearing Steel And Stainless Steel

The 1306 self-aligning ball bearing is a versatile double-row rolling bearing with a spherical outer raceway. It offers excellent self-aligning performance to compensate for shaft misalignment and installation deflection, ensuring low-friction, quiet and stable operation for light and medium-duty mechanical systems. Available in standard straight bore 1306, tapered bore 1306K, bearing steel and stainless steel options, this bearing delivers reliable performance in dry, humid and sanitary industrial environments.

Difference Between 1306 and 1306K

1306 (Standard Bore): Designed with a straight cylindrical inner bore for fixed shaft fitting. It features simple installation, stable positioning and easy disassembly, ideal for conventional machinery with fixed assembly and no frequent adjustment requirements.

1306K (Tapered Bore): Equipped with a standard 1:12 tapered inner bore, compatible with universal adapter sleeves. It supports flexible mounting and precise clearance adjustment, enabling 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 standard material for 1306 and 1306K bearings. Professional heat treatment provides high hardness, outstanding wear resistance and strong anti-fatigue performance. It maintains stable load capacity and smooth rotation under dry working conditions, suitable for general industrial machinery and conventional transmission systems.

Stainless Steel: Stainless steel 1306/1306K bearings feature excellent 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

Superior self-aligning capability offsets mounting errors and shaft deflection. Double-row ball structure ensures stable load capacity with low-noise smooth operation. Dual bore designs meet fixed and adjustable installation demands. Two material options support economical general use and anti-corrosion precision applications. Standard size allows easy installation and long service life.

Application Scenarios

1306 and 1306K self-aligning ball bearings are widely used in medium and small motors, industrial fans, textile machinery, light conveyor systems and general automation equipment. Bearing steel models suit conventional indoor mechanical devices; stainless steel versions apply to food processing machinery, medical equipment and humid environment machinery. 1306K tapered bore bearings are ideal for equipment requiring frequent debugging and assembly adjustment.