7004 Angular Contact Ball Bearings
| 7004 Angular Contact Ball Bearings | |||
|---|---|---|---|
| Part Number | 7004 | Weight(Kg) | 0.079 |
| d | 20 | Dynamic Load Co(N) | 11100 |
| D1 | 42 | Static Load Cor(N) | 6600 |
| B | 12 | Grease Speed | 26000 |
| R | 0.6 | Oil Speed | 35000 |
7004 Angular Contact Ball Bearing | 7004C / 7004AC / 7004B
The 7004 angular contact ball bearing is a precision single-row rolling bearing designed to withstand combined radial and axial loads. It supports high-speed, low-noise and stable rotational operation, widely used in precision machinery and transmission equipment. Available in three contact angle versions: 7004C, 7004AC and 7004B, plus bearing steel and stainless steel material options, this bearing delivers reliable performance for standard and corrosive working environments.
Difference Between 7004C, 7004AC and 7004B
7004C (15° Contact Angle): Features a 15° contact angle, providing excellent high-speed performance and slight axial load capacity. It offers minimal friction and high precision, ideal for high-speed precision equipment requiring strict rotational accuracy.
7004AC (25° Contact Angle): Adopts a 25° contact angle with balanced radial and axial load capacity. It achieves stable operation under moderate composite loads, serving as the most versatile and cost-effective model for general precision transmission scenarios.
7004B (40° Contact Angle): Equipped with a 40° large contact angle, focusing on strong axial load bearing capacity. It suits equipment with heavy axial force and low-speed to medium-speed operation, excellent for heavy-load offset working conditions.
Material Differences: Bearing Steel vs Stainless Steel
Bearing Steel (GCr15): GCr15 bearing steel is the standard material for 7004 series bearings. After professional heat treatment, it features high hardness, outstanding wear resistance and strong anti-fatigue performance. It maintains high precision and stable operation under conventional dry environments, perfect for general industrial precision machinery.
Stainless Steel: Stainless steel 7004 series bearings provide excellent rust-proof, oxidation and weak corrosion resistance. They effectively resist moisture, humid air and light contamination, preventing precision degradation and corrosion damage, suitable for damp, sanitary and light outdoor working scenarios.
Product Features
Supports combined radial and axial load operation. Three contact angle options adapt to high-speed, balanced and heavy axial load scenarios. High precision, low friction and stable high-speed performance. Two material grades balance cost-effectiveness and corrosion resistance. Compact structure for easy installation and long service life.
Application Scenarios
7004 series angular contact ball bearings are widely applied in precision motors, machine tool spindles, pumps, compressors, instrumentation and automation precision equipment. Bearing steel models fit conventional indoor precision machinery; stainless steel versions apply to food machinery, medical equipment and high-humidity environment devices. 7004C for high-speed precision scenarios, 7004AC for universal use, and 7004B for heavy axial load equipment.
