2305 Self-aligning Ball Bearings

2305 Self-Aligning Ball Bearing / 2305K | Bearing Steel And Stainless Steel

The 2305 self-aligning ball bearing is a durable double-row rolling bearing with a spherical outer raceway, widely used for light and medium-duty industrial machinery. It features reliable self-aligning performance to compensate shaft misalignment and installation deflection, delivering low-friction, quiet and stable operation. Available in standard straight bore 2305, tapered bore 2305K, bearing steel and stainless steel options, this bearing runs steadily in dry, humid and sanitary working environments.

Difference Between 2305 and 2305K

2305 (Standard Bore): Adopts a straight cylindrical inner bore for fixed shaft fitting. It supports simple installation, stable positioning and easy disassembly, ideal for industrial equipment with fixed assembly and no frequent adjustment needs.

2305K (Tapered Bore): Designed with a 1:12 standard tapered inner bore, compatible with universal adapter sleeves. It enables flexible mounting and precise clearance adjustment for easy 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 2305 and 2305K bearings. Professional heat treatment provides high hardness, excellent wear resistance and strong anti-fatigue performance. It maintains stable load capacity and smooth rotation under conventional dry conditions, suitable for general industrial machinery and transmission systems.

Stainless Steel: Stainless steel 2305/2305K 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

Superior self-aligning capability offsets mounting errors and shaft deflection. Double-row ball structure ensures 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 long service life.

Application Scenarios

2305 and 2305K self-aligning ball bearings are widely applied 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 fit food processing machinery, medical equipment and high-humidity machinery. 2305K tapered bore bearings are optimal for equipment requiring frequent debugging and maintenance.