3201 Angular Contact Ball Bearings

3201 Angular Contact Ball Bearing | 3201C / 3201AC / 3201B

The 3201 angular contact ball bearing is a compact double-row precision bearing built to handle high combined radial and axial loads. It features high rigidity, low friction and low-noise stable operation, ideal for limited-space heavy-load transmission systems. Available in 3201C, 3201AC and 3201B contact angle types, as well as bearing steel and stainless steel materials, this bearing delivers steady performance in standard, humid and mildly corrosive industrial environments.

Difference Between 3201C, 3201AC and 3201B

3201C (15° Contact Angle): Designed with a 15° contact angle for ultra-low friction and excellent high-speed performance. It maintains precise rotation with moderate axial load capacity, perfect for compact high-speed spindles and precision automation equipment.

3201AC (25° Contact Angle): Adopts a 25° contact angle with balanced radial and axial load resistance. With stable composite load performance and strong versatility, it is the universal cost-effective choice for most standard precision machinery applications.

3201B (40° Contact Angle): Equipped with a 40° large contact angle for maximum axial load capacity. It reliably withstands heavy axial thrust at low and medium speeds, suitable for compact machinery 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 3201 series bearings. Professional heat treatment provides high hardness, excellent wear resistance and strong fatigue resistance, ensuring stable precision and long service life in conventional dry industrial conditions.

Stainless Steel: Stainless steel 3201 bearings offer superior rust-proof, oxidation and weak corrosion resistance. They effectively resist moisture and minor contamination to avoid precision loss and corrosion damage, ideal for food machinery, medical equipment and high-humidity sanitary scenarios.

Product Features

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

Application Scenarios

3201 series double-row angular contact bearings are widely applied in compact precision motors, miniature machine tool spindles, small industrial pumps, compressors and automated precision machinery. Bearing steel models suit conventional indoor industrial equipment; stainless steel versions adapt to damp, sanitary and lightly corrosive environments. 3201C for high-speed precision operation, 3201AC for general universal use, and 3201B for heavy axial load equipment.