7306 Angular Contact Ball Bearings

7306 Angular Contact Ball Bearing | 7306C / 7306AC / 7306B

The 7306 angular contact ball bearing is a single-row heavy-duty precision rolling bearing suitable for combined radial and axial loads. It provides low friction, low noise and stable high-speed performance, commonly used in medium and heavy-duty industrial transmission and precision machinery. Available in 7306C, 7306AC and 7306B contact angle types with bearing steel and stainless steel options, this bearing works reliably in standard, humid and mildly corrosive industrial environments.

Difference Between 7306C, 7306AC and 7306B

7306C (15° Contact Angle): Features a 15° contact angle with minimal friction and excellent high-speed stability. It maintains high rotational precision with moderate axial load capacity, ideal for high-speed spindles and precision automated equipment.

7306AC (25° Contact Angle): Adopts a 25° contact angle with balanced radial and axial load performance. It delivers stable composite load resistance and strong versatility, serving as the universal cost-effective option for most precision machinery applications.

7306B (40° Contact Angle): Equipped with a 40° large contact angle for superior axial load capacity. It stably withstands heavy axial thrust at low to medium speeds, perfect for 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 7306 series bearings. Professional heat treatment ensures high hardness, excellent wear resistance and strong fatigue resistance, supporting stable precision and long service life in conventional dry working conditions.

Stainless Steel: Stainless steel 7306 bearings offer outstanding rust-proof, anti-oxidation and weak corrosion resistance. They resist moisture and light contamination to avoid precision loss, suitable for food machinery, medical devices and high-humidity sanitary environments.

Product Features

Supports combined radial and axial multi-directional loads. Three contact angle designs cover high-speed, general-purpose and heavy axial load scenarios. Provides high precision, smooth rotation and quiet operation. Dual material grades balance cost performance and corrosion resistance. Standard size structure allows easy installation and replacement.

Application Scenarios

7306 series angular contact ball bearings are widely used in precision motors, machine tool spindles, industrial pumps, compressors and heavy-duty automation equipment. Bearing steel models fit ordinary indoor industrial machinery; stainless steel versions adapt to damp, sanitary and lightly corrosive working conditions. 7306C for high-speed precision operation, 7306AC for universal use, and 7306B for heavy axial load equipment.