7301 Angular Contact Ball Bearings

7301 Angular Contact Ball Bearing | 7301C / 7301AC / 7301B

The 7301 angular contact ball bearing is a high-strength single-row precision bearing built for combined radial and axial loads. Featuring low friction, quiet operation and stable high-speed performance, it is widely used for medium and heavy-duty industrial transmission equipment. Available in 7301C, 7301AC and 7301B contact angle types, as well as bearing steel and stainless steel materials, this bearing delivers reliable performance in dry, humid and mildly corrosive working environments.

Difference Between 7301C, 7301AC and 7301B

7301C (15° Contact Angle): Designed with a 15° contact angle for ultra-low friction and excellent high-speed stability. It retains high rotational precision with moderate axial load capacity, ideal for high-speed spindles and precision automated machinery.

7301AC (25° Contact Angle): Adopts a 25° contact angle with balanced radial and axial load capacity. It provides stable composite load resistance and strong versatility, serving as the universal cost-effective option for most precision machinery applications.

7301B (40° Contact Angle): Equipped with a 40° large contact angle to maximize axial load resistance. It steadily withstands heavy axial thrust at low and medium speeds, perfect for 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 7301 series bearings. Professional heat treatment ensures high hardness, exceptional wear resistance and strong fatigue resistance, maintaining stable precision and long service life in conventional dry industrial conditions.

Stainless Steel: Stainless steel 7301 bearings feature superior rust-proof, oxidation and weak corrosion resistance. They effectively resist moisture, humid air and minor contamination to prevent precision loss and corrosion failure, suitable for food machinery, medical equipment and high-humidity sanitary scenarios.

Product Features

Supports combined radial and axial multi-directional loads. Three contact angle specifications cover high-speed, universal and heavy axial load working conditions. Offers high precision, smooth rotation and low-noise operation. Dual material options balance cost performance and anti-corrosion ability. Standard structure enables easy installation and replacement.

Application Scenarios

7301 series angular contact ball bearings are widely applied in precision motors, machine tool spindles, industrial pumps, compressors and heavy-duty precision automation machinery. Bearing steel models fit conventional indoor industrial equipment; stainless steel versions adapt to damp, sanitary and lightly corrosive environments. 7301C for high-speed precision operation, 7301AC for general universal use, and 7301B for heavy axial load equipment.