7005 Angular Contact Ball Bearings

7005 Angular Contact Ball Bearing | 7005C / 7005AC / 7005B

The 7005 angular contact ball bearing is a high-precision single-row rolling bearing capable of handling combined radial and axial loads. It delivers low-friction, quiet and stable high-speed rotation, widely adopted in precision industrial machinery and power transmission systems. Available in 7005C, 7005AC and 7005B contact angle types, as well as bearing steel and stainless steel materials, this bearing suits both standard and humid, corrosive working environments.

Difference Between 7005C, 7005AC and 7005B

7005C (15° Contact Angle): Built with a 15° contact angle, featuring ultra-low friction and outstanding high-speed performance. It prioritizes rotational precision with mild axial load capacity, ideal for high-speed precision mechanical spindles and delicate transmission equipment.

7005AC (25° Contact Angle): Designed with a 25° contact angle for balanced radial and axial load capacity. It offers stable performance under composite loads, serving as the universal, cost-effective option for most standard precision machinery applications.

7005B (40° Contact Angle): Equipped with a 40° large contact angle, focusing on superior axial load resistance. It performs reliably under heavy axial force at low to medium speeds, perfect for offset load and heavy axial load working conditions.

Material Differences: Bearing Steel vs Stainless Steel

Bearing Steel (GCr15): GCr15 bearing steel is the mainstream standard material for 7005 series bearings. Through strict heat treatment, it achieves high hardness, excellent wear resistance and strong anti-fatigue ability, maintaining stable precision and long service life in conventional dry industrial environments.

Stainless Steel: Stainless steel 7005 bearings feature excellent rust-proof, oxidation and weak corrosion resistance. They resist moisture, humid air and minor contamination, avoiding precision loss and corrosion damage, suitable for food machinery, medical equipment and high-humidity sanitary working scenarios.

Product Features

Supports simultaneous radial and axial combined loads. Three contact angle specifications meet high-speed, universal and heavy axial load demands. High precision, low noise and stable high-speed operation. Dual material options balance cost performance and corrosion resistance. Compact and standardized structure for easy installation and replacement.

Application Scenarios

7005 angular contact ball bearings are widely used in precision motors, machine tool spindles, industrial pumps, compressors, instrumentation and automated precision equipment. Bearing steel models are suitable for conventional indoor industrial machinery; stainless steel versions apply to sanitary and high-humidity equipment. 7005C fits high-speed precision scenarios, 7005AC for general universal use, and 7005B for heavy axial load mechanical devices.