7007 Angular Contact Ball Bearings

7007 Angular Contact Ball Bearing | 7007C / 7007AC / 7007B

The 7007 angular contact ball bearing is a high-precision single-row rolling bearing capable of supporting combined radial and axial loads. It delivers low-friction, low-noise and stable high-speed operation, widely used in precision transmission and industrial mechanical systems. Available in three contact angle types: 7007C, 7007AC and 7007B, as well as bearing steel and stainless steel materials, this bearing adapts to conventional, humid and mildly corrosive industrial environments.

Difference Between 7007C, 7007AC and 7007B

7007C (15° Contact Angle): Features a 15° contact angle with ultra-low friction and excellent high-speed performance. It focuses on high rotational precision with moderate axial load capacity, ideal for high-speed spindles and precision automation equipment.

7007AC (25° Contact Angle): Equipped with a 25° contact angle for balanced radial and axial load resistance. With stable composite load performance and strong versatility, it is the most cost-effective option for general precision machinery applications.

7007B (40° Contact Angle): Adopts a 40° large contact angle to maximize axial load capacity. It reliably bears heavy axial thrust at low and medium speeds, perfect for offset load and heavy axial force mechanical equipment.

Material Differences: Bearing Steel vs Stainless Steel

Bearing Steel (GCr15): GCr15 bearing steel is the standard material for 7007 series bearings. Professional heat treatment ensures high hardness, excellent wear resistance and strong anti-fatigue performance, maintaining long-term stable precision in conventional dry industrial working conditions.

Stainless Steel: Stainless steel 7007 series bearings have superior rust-proof, oxidation and weak corrosion resistance. They resist moisture, humid air and minor contamination to avoid precision loss and corrosion damage, suitable for food machinery, medical equipment and high-humidity sanitary scenarios.

Product Features

Supports multi-directional combined radial and axial loads. Three contact angle specifications meet high-speed, universal and heavy axial load demands. Boasts high precision, smooth rotation and quiet operation. Dual material options balance cost performance and anti-corrosion ability. Standard compact structure enables easy installation and replacement.

Application Scenarios

7007 angular contact ball bearings are commonly applied in precision motors, machine tool spindles, industrial pumps, compressors, instrumentation and automated precision machinery. Bearing steel models suit conventional indoor industrial equipment; stainless steel versions fit damp, sanitary and light corrosive environments. 7007C for high-speed precision operation, 7007AC for universal use, and 7007B for heavy axial load equipment.