3205 Angular Contact Ball Bearings

3205 Angular Contact Ball Bearing | 3205C / 3205AC / 3205B

The 3205 angular contact ball bearing is a double-row high-rigidity precision bearing engineered for combined radial and axial loads. Featuring compact structure, low friction and low-noise stable operation, it offers higher load capacity and rigidity than single-row bearings, suitable for space-limited medium and heavy-duty precision transmission systems. Available in 3205C, 3205AC and 3205B contact angle types with bearing steel and stainless steel options, it delivers reliable performance in dry, humid and mildly corrosive industrial environments.

Difference Between 3205C, 3205AC and 3205B

3205C (15° Contact Angle): Comes with a 15° contact angle, featuring ultra-low friction and excellent high-speed stability. It retains high rotational precision with moderate axial load capacity, ideal for compact high-speed spindles and high-precision automated equipment.

3205AC (25° Contact Angle): Adopts a 25° contact angle with balanced radial and axial load resistance. It delivers stable composite load performance and strong versatility, serving as the universal cost-effective solution for most precision machinery applications.

3205B (40° Contact Angle): Equipped with a 40° large contact angle for superior axial load capacity. It steadily withstands heavy axial thrust at low and medium speeds, perfect for compact mechanical equipment with offset loads and heavy axial force.

Material Differences: Bearing Steel vs Stainless Steel

Bearing Steel (GCr15): GCr15 bearing steel is the standard material for 3205 series bearings. Professional heat treatment ensures high hardness, exceptional wear resistance and strong fatigue resistance, maintaining stable operational precision and long service life in conventional dry industrial conditions.

Stainless Steel: Stainless steel 3205 bearings provide excellent rust-proof, anti-oxidation and weak corrosion resistance. They effectively resist moisture and minor contamination to avoid precision loss and corrosion damage, suitable for food machinery, medical equipment and high-humidity sanitary working scenarios.

Product Features

Double-row structure significantly enhances structural rigidity and overall load capacity. Supports multi-directional combined radial and axial loads. Three contact angle specifications meet high-speed, universal and heavy axial load working demands. Offers high-precision, smooth and quiet operation. Dual material options balance cost performance and anti-corrosion ability for diverse industrial applications.

Application Scenarios

3205 series double-row angular contact ball bearings are widely used in compact precision motors, small machine tool spindles, industrial pumps, compressors and precision automation machinery. Bearing steel models adapt to conventional indoor industrial equipment; stainless steel versions fit damp, sanitary and lightly corrosive environments. 3205C for high-speed precision operation, 3205AC for general universal use, and 3205B for heavy axial load equipment.