3208 Angular Contact Ball Bearings

3208 Angular Contact Ball Bearing | 3208C / 3208AC / 3208B

The 3208 angular contact ball bearing is a double-row high-rigidity precision rolling bearing designed for combined radial and axial loads. It features a compact structure, higher rigidity and load capacity than single-row bearings, with low friction and low-noise stable operation. Suitable for space-limited medium and heavy-duty precision transmission systems, the bearing comes in 3208C, 3208AC and 3208B contact angle types, plus bearing steel and stainless steel material options to fit various industrial working environments.

Difference Between 3208C, 3208AC and 3208B

3208C (15° Contact Angle): Adopts a 15° contact angle with ultra-low friction and excellent high-speed stability. It maintains high rotational precision with moderate axial load capacity, ideal for compact high-speed spindles and precision automated equipment.

3208AC (25° Contact Angle): Equipped with a 25° contact angle for balanced radial and axial load resistance. Featuring stable composite load performance and strong versatility, it is the universal cost-effective option for most precision machinery applications.

3208B (40° Contact Angle): Features a 40° large contact angle for enhanced axial load capacity. It reliably withstands heavy axial thrust at low to medium speeds, perfect for compact 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 3208 series bearings. Professional heat treatment delivers 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 3208 bearings offer superior rust-proof, anti-oxidation and weak corrosion resistance. They effectively resist moisture and minor contamination to prevent precision loss and corrosion failure, suitable for food machinery, medical equipment and high-humidity sanitary scenarios.

Product Features

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

Application Scenarios

3208 series double-row angular contact ball bearings are widely applied in compact precision motors, machine tool spindles, industrial pumps, compressors and precision automation machinery. Bearing steel models suit conventional indoor industrial equipment; stainless steel versions adapt to damp, sanitary and lightly corrosive environments. 3208C for high-speed precision operation, 3208AC for general universal use, and 3208B for heavy axial load equipment.