2205 Self-aligning Ball Bearings

2205 Self-Aligning Ball Bearing / 2205K | Bearing Steel And Stainless Steel

The 2205 self-aligning ball bearing is a durable double-row rolling bearing with a spherical outer raceway, designed for medium-duty industrial applications. It delivers excellent self-aligning performance to compensate for shaft misalignment and mounting deflection, ensuring low-friction, quiet and stable rotational operation. Offered in standard straight bore 2205, tapered bore 2205K, bearing steel and stainless steel versions, this bearing adapts perfectly to dry, humid and sanitary working environments.

Difference Between 2205 and 2205K

2205 (Standard Bore): Features a straight cylindrical inner bore for fixed shaft installation. It provides simple assembly, stable positioning and easy disassembly, ideal for medium-load machinery with fixed mounting and no frequent adjustment requirements.

2205K (Tapered Bore): Equipped with a 1:12 tapered inner bore, compatible with standard adapter sleeves. It supports flexible installation, precise clearance and preload adjustment, enabling easy maintenance and calibration, suitable for variable-speed transmission and frequently adjusted industrial equipment.

Material Differences: Bearing Steel vs Stainless Steel

Bearing Steel (GCr15): GCr15 bearing steel is the cost-effective standard material for 2205 and 2205K bearings. With strict heat treatment, it achieves high hardness, excellent wear resistance and strong fatigue resistance. It maintains stable load capacity and smooth operation under conventional dry conditions, perfect for general medium-duty industrial machinery and transmission systems.

Stainless Steel: Stainless steel 2205/2205K bearings offer outstanding rust resistance, oxidation resistance and weak corrosion resistance. They effectively withstand moisture, humid air and minor contamination, preventing precision loss and corrosion damage, making them ideal for sanitary, damp and light outdoor working scenarios.

Product Features

Powerful self-aligning ability offsets mounting errors and shaft deflection. Double-row ball structure provides reliable medium-load capacity with low-noise smooth operation. Dual bore designs meet fixed and adjustable installation needs. Two material grades support economical standard use and anti-corrosion precision applications. Standard size design allows quick installation and long service life.

Application Scenarios

2205 and 2205K self-aligning ball bearings are widely applied in medium motors, industrial fans, textile machinery, conveyor systems, packaging equipment and general industrial automation. Bearing steel models fit conventional indoor mechanical equipment; stainless steel versions are suitable for food machinery, medical devices and humid environment equipment. 2205K tapered bore bearings are ideal for equipment requiring frequent debugging and assembly adjustment.